# IllyVoIP

> Official public information about IllyVoIP business voice, SIP trunking, phone numbers, messaging, AI Voice Agents and communications tools.

This is a text snapshot of published public website pages. Use each source URL for attribution and the latest information. Prices, stock, eligibility and terms can change; country coverage does not guarantee that a number is available to order. Dated blog posts describe their publication period, not necessarily current offers. Private accounts, unpublished content and internal documentation are excluded. Global Data/eSIM is retired. This file is not a replacement for the service agreement.

The categorized English index below covers all canonical English pages in the public sitemap. The language-specific files contain the published text for each language; English-only coverage, offers and blog content is retained in English, not automatically translated.

## Complete text and languages
- [Full English website text](https://illyvoip.com/llms-full.txt): Page text, headings, links, tables and image references, with source URLs.
- [Canonical sitemap index](https://illyvoip.com/sitemap.xml): Discover all published website languages.
- [All canonical page URLs](https://illyvoip.com/sitemap-pages.xml): Full multilingual URL inventory.
- [Shqip — full published text](https://illyvoip.com/llms-full-sq.txt): 160 pages; [website](https://illyvoip.com/sq/).
- [Deutsch — full published text](https://illyvoip.com/llms-full-de.txt): 158 pages; [website](https://illyvoip.com/de/).
- [Français — full published text](https://illyvoip.com/llms-full-fr.txt): 158 pages; [website](https://illyvoip.com/fr/).
- [Español — full published text](https://illyvoip.com/llms-full-es.txt): 158 pages; [website](https://illyvoip.com/es/).
- [Português — full published text](https://illyvoip.com/llms-full-pt.txt): 158 pages; [website](https://illyvoip.com/pt/).
- [العربية — full published text](https://illyvoip.com/llms-full-ar.txt): 158 pages; [website](https://illyvoip.com/ar/).
- [Русский — full published text](https://illyvoip.com/llms-full-ru.txt): 158 pages; [website](https://illyvoip.com/ru/).
- [中文 — full published text](https://illyvoip.com/llms-full-zh.txt): 158 pages; [website](https://illyvoip.com/zh/).
- [हिन्दी — full published text](https://illyvoip.com/llms-full-hi.txt): 158 pages; [website](https://illyvoip.com/hi/).
- [Türkçe — full published text](https://illyvoip.com/llms-full-tr.txt): 158 pages; [website](https://illyvoip.com/tr/).

## Products, pricing and getting started
- [IllyVoIP | Business Voice, SIP Trunks & Phone Numbers](https://illyvoip.com/): Business voice, wholesale termination, SIP trunks, phone numbers and SMS. Explore IllyVoIP’s web portal and apps for iOS, Android and Windows.
- [AI Voice Agents — Your knowledge. Your voice. | IllyVoIP](https://illyvoip.com/ai-voice-agents): Configure AI voice agents for incoming calls with business knowledge, multilingual voices, visual call flows and transfers. Build and manage your agent in IllyVoIP.
- [Apps for Windows, iOS & Android | IllyVoIP](https://illyvoip.com/apps): Download IllyVoIP for Windows, iPhone, iPad and Android. Explore the official apps and sign in with your existing account.
- [Business Voice — Calling for your team | IllyVoIP](https://illyvoip.com/business-voice): Make and receive business calls with IllyVoIP. Bring your team, phone numbers, call routing and customer conversations together across browser, mobile and Windows.
- [Contact Center, Agent Workspace & Dialer | IllyVoIP](https://illyvoip.com/contact-center): Bring customer calls, campaigns and follow-up together with IllyVoIP Contact Center. Explore Agent Workspace, Power and Predictive dialing, voicemail and reporting.
- [Number Lookup & Live HLR | IllyVoIP](https://illyvoip.com/number-lookup): Check number formatting, country, type and available carrier details with IllyVoIP. Explore live HLR, portability and supported activity checks.
- [Local, Mobile & Toll-Free Phone Numbers | IllyVoIP](https://illyvoip.com/phone-numbers): Find phone numbers for your business. Explore local, national, mobile and toll-free numbers, incoming call routing, number porting and ordering with IllyVoIP.
- [Pricing & Rate Tools | IllyVoIP](https://illyvoip.com/pricing): Understand IllyVoIP voice, phone number, SMS, AI and HLR charges. Find current account rates, destination quotes and CSV rate sheets in the portal.
- [Getting Started with IllyVoIP | IllyVoIP](https://illyvoip.com/resources/getting-started): Prepare your account and follow a practical starting path for calling, phone numbers, AI agents, SMS, SIP or APIs.
- [Voice Network & Regional SIP Endpoints | IllyVoIP](https://illyvoip.com/resources/network): Find IllyVoIP SIP endpoints in Germany, the United States and Singapore, with voice routing guidance and network status links.
- [IllyVoIP Referral Program | Earn €5 for a Qualifying Referral](https://illyvoip.com/resources/referral-program): Recommend IllyVoIP and earn €5 when an invited customer makes a qualifying top-up of at least €25. Choose service credit or an eligible PayPal payout.
- [SMS Messaging — Send & Track Business Messages | IllyVoIP](https://illyvoip.com/sms-messaging): Send outbound business SMS from the IllyVoIP portal or API. Explore sender IDs, recipient validation, message costs and delivery tracking.
- [Toll-Free Numbers for Your Business | IllyVoIP](https://illyvoip.com/toll-free-numbers): Explore IllyVoIP toll-free numbers, country-specific availability, incoming call routing and number charges. Check current inventory in the portal.
- [Voice API — Programmable Call Control | IllyVoIP](https://illyvoip.com/voice-api): Build voice into your application with IllyVoIP Voice API: inbound and outbound calls, speech, keypad input, transfers, action chains and call-event webhooks.
- [Wholesale Voice & SIP Trunks | IllyVoIP](https://illyvoip.com/voice-termination): Connect your PBX or voice platform to IllyVoIP. Explore wholesale voice termination, regional SIP endpoints, routing packages, destination rates and traffic controls.

## Features
- [Platform Features | IllyVoIP](https://illyvoip.com/features): Explore IllyVoIP calling, AI, messaging, number management, analytics and account controls by workflow.
- [A clear question. A better way forward.](https://illyvoip.com/features/247-dedicated-support/): Get help with your IllyVoIP account, calling setup or service issue. Open a ticket with the right details, follow replies and check network notices from one place.
- [A clear start. Built around your business.](https://illyvoip.com/features/5-minute-automated-setup/): Prepare your IllyVoIP account, review verification and security, then choose the services you need. Keep the essentials together in one workspace.
- [Your account. Access on your terms.](https://illyvoip.com/features/account-security/): Manage sign-in protection, review team activity and give people the access they need to work.
- [A clear welcome. The right next step.](https://illyvoip.com/features/advanced-ivr-call-queues/): Build incoming-call menus and manage team queues with IllyVoIP call flows, ring settings, wait limits and wrap-up controls.
- [See the activity. Understand the pattern.](https://illyvoip.com/features/advanced-real-time-calling-reports/): Explore IllyVoIP call history and performance reporting, including call filters, agent and number views, usage summaries and exports.
- [A conversation ends. The next step stays.](https://illyvoip.com/features/calendar-appointment-scheduling/): Keep notes, follow-ups and appointment details close to the customer conversation in the IllyVoIP agent workspace.
- [Listen again. Find the details.](https://illyvoip.com/features/call-recordings-with-audio-transcribing/): Review recorded calls and create searchable transcripts in IllyVoIP. Understand recording settings, audio access and transcription charges.
- [Your calls. A recognizable number.](https://illyvoip.com/features/direct-access-control-of-cli/): Understand IllyVoIP caller ID settings, owned numbers, verified caller IDs, campaign identity options and custom caller ID approval.
- [Top up your account. Your way.](https://illyvoip.com/features/flexible-payment-methods-including-all-cryptocurrencies/): Choose from card, PayPal, cryptocurrency and SWIFT bank transfer options in the IllyVoIP portal. Review the current conditions before completing your payment.
- [Set clear limits. Stay in control.](https://illyvoip.com/features/fraud-control/): Manage country policies, number-prefix rules and maximum outbound call prices with IllyVoIP fraud controls. Review the limits before changing your settings.
- [Know the contact. Keep the context.](https://illyvoip.com/features/full-featured-lead-management-suite/): Manage IllyVoIP contact profiles, groups, status and sharing, with customer context, notes and follow-ups in the agent workspace.
- [Less back and forth. More in your hands.](https://illyvoip.com/features/fully-automated-self-service-portal/): Manage voice, phone numbers, messaging and account settings in one IllyVoIP workspace. Move from service setup to everyday activity without switching between separate portals.
- [Your conversations. Connected to HubSpot.](https://illyvoip.com/features/hubspot-integration/): Bring contacts, calls, SMS and appointments into a connected workflow, with sync options you control in IllyVoIP.
- [From account access to your first connection.](https://illyvoip.com/features/instant-service-activation/): See what each service needs before you start. Review account requirements, configure your service and check its status in the IllyVoIP portal.
- [A clearer view. A more informed team.](https://illyvoip.com/features/live-call-monitoring-spy-whisper-control/): Follow your outbound campaign from one supervisor view. See agent readiness, live calls and queued contacts, then identify what needs attention.
- [Your traffic. A considered route.](https://illyvoip.com/features/multi-carrier-routing/): Choose a default voice region and an outbound routing package from your account. Manage routing choices separately from your calling capacity.
- [Keep your number. Move your calling forward.](https://illyvoip.com/features/number-portability-from-any-other-provider/): Bring eligible phone numbers to IllyVoIP. Prepare the request, follow carrier review and plan how incoming calls will reach your team.
- [Plan the outreach. Focus on the call.](https://illyvoip.com/features/powerful-auto-dialer/): Organize outbound calling with IllyVoIP Power and Predictive dialer modes, campaign controls, caller ID settings and agent workflows.
- [A clearer view of your connection.](https://illyvoip.com/features/superior-call-quality-with-advanced-qos/): Understand IllyVoIP browser connection testing, its limits and the checks that help investigate calling issues.
- [The right access. The right connection.](https://illyvoip.com/features/unlimited-agents-sip-accounts-for-free/): Create agent accounts for your team and manage SIP lines for voice connectivity. Keep user permissions, calling configuration and account capacity in view.
- [A missed conversation. A clear next step.](https://illyvoip.com/features/voicemail/): Review voice messages left for your team, see the caller context and follow up from your IllyVoIP workspace.
- [Your browser. Your business phone.](https://illyvoip.com/features/web-based-phone-dialer/): Make and receive calls in the IllyVoIP portal with a browser-based webphone, recent calls, contacts and audio settings.
- [Service events. Your next action.](https://illyvoip.com/features/webhooks/): Connect call, SMS, contact and voicemail events to your application with documented payloads, signed requests and delivery history.

## Solutions
- [Communications Solutions for Teams & Businesses | IllyVoIP](https://illyvoip.com/solutions): Find IllyVoIP services for business teams, sales and support, carriers, resellers and developers.
- [Make the next conversation easier.](https://illyvoip.com/solutions/banking-financial-services/): Give clients a clear way to reach your team. Organize routine enquiries, branch call routing and service updates around your institution’s own processes.
- [Keep your business within reach.](https://illyvoip.com/solutions/businesses/): When people work across desks, locations and devices, customers still need a clear way to reach them. Bring your business numbers, calling and follow-ups into one working routine.
- [Make the next conversation count.](https://illyvoip.com/solutions/call-centers-helpdesk/): A queue, an outbound campaign and a customer follow-up need different working rhythms. Connect them around your agents, with the context to handle each conversation and a clear next step.
- [Your customers. Your voice service.](https://illyvoip.com/solutions/carriers-resellers/): Connect SIP voice traffic, add incoming phone numbers and integrate APIs with IllyVoIP services for carriers and resellers.
- [Put communication inside your product.](https://illyvoip.com/solutions/developers-platforms/): Keep the customer in your application while the conversation happens. Combine programmable calling, messaging, number operations and browser calling around the workflow you are building.
- [Make it easier to reach your institution.](https://illyvoip.com/solutions/education-elearning/): Connect admissions, administration and learner support with business calling and SMS. Give enquiries a clear destination and keep important updates within reach.
- [A clear connection to public services.](https://illyvoip.com/solutions/government-public-services/): Help residents reach the right office and keep routine service enquiries moving. Use business calling, department routing and SMS for the information your team needs to share.
- [A clearer way to reach your team.](https://illyvoip.com/solutions/health-industry/): Help people reach reception, ask an administrative question or arrange a follow-up. Bring business calling and service updates into your healthcare organization’s everyday communications.
- [A welcoming voice. From the first call.](https://illyvoip.com/solutions/hospitality/): Help guests reach the right team for enquiries and assistance. Bring business numbers, call routing and configurable voice agents into your hospitality communications.
- [Keep operations in conversation.](https://illyvoip.com/solutions/logistics-transportation/): Connect dispatchers, drivers and customers with business calling and SMS. Add communication to your delivery workflow while keeping shipment data in your operational systems.
- [Keep teams and suppliers within calling distance.](https://illyvoip.com/solutions/manufacturing/): Bring office, site and supplier conversations into a connected calling setup. Use business numbers, SIP connectivity and team tools around your existing operations.
- [Keep the conversation behind the production moving.](https://illyvoip.com/solutions/media-entertainment/): Connect producers, crews and external partners with business calling and messaging. Give day-to-day coordination a clear place alongside your production tools.
- [Keep your people connected to the mission.](https://illyvoip.com/solutions/nonprofits-ngos/): Give supporters, volunteers and colleagues a clear way to reach your organization. Combine business calling, contact follow-ups and relevant SMS updates.
- [From first enquiry to the next viewing.](https://illyvoip.com/solutions/real-estate/): Keep property conversations and their next steps within reach. Use business calling, contact notes and appointment tools for the way your agency works.
- [Stay close to customers. Beyond the checkout.](https://illyvoip.com/solutions/retail-ecommerce/): Give shoppers a clear way to reach your team. Combine business calling, incoming call handling and SMS updates around the way your store works.
- [Give every lead a clear next step.](https://illyvoip.com/solutions/sales-marketing/): Bring calling, customer context and follow-ups into your sales workflow. Organize outreach with IllyVoIP’s contact-center tools and keep the conversation moving.
- [Build communications into what comes next.](https://illyvoip.com/solutions/technology-startups/): Set up calling for your team or add voice and messaging to your product. Work with IllyVoIP’s Voice API, Webphone SDK and service APIs from one account.

## Developer documentation
- [Developer APIs & Webphone SDK | IllyVoIP](https://illyvoip.com/resources/developers): Build with IllyVoIP Voice API, SMS, phone number management, webhooks and the browser Webphone SDK. Explore current documentation and development tools.

## Help Center topics
- [A clearer path to the answer. | IllyVoIP](https://illyvoip.com/resources/help-center/): Find a starting guide, understand a service or get help from our team.
- [Setup & Integrations | IllyVoIP](https://illyvoip.com/resources/help-center/setup-integrations/): Connect phones, apps and PBX systems, or build with IllyVoIP APIs and integrations.
- [Troubleshooting | IllyVoIP](https://illyvoip.com/resources/help-center/troubleshooting/): Find diagnostic steps for connection, call, audio, messaging and account issues.
- [Using IllyVoIP | IllyVoIP](https://illyvoip.com/resources/help-center/using-illyvoip/): Manage your account, calls, phone numbers, messaging and teams in the IllyVoIP Portal.

## Help Center guides
- [Connect 2N IP Solo, IP Verso and IP Base intercoms to IllyVoIP](https://illyvoip.com/resources/help-center/article/2n-ip-solo-sip-audio-calls/): Connect 2N IP Solo, IP Verso and IP Base to IllyVoIP for reception audio. Configure SIP and the entrance button while preserving access-control settings.
- [3CX Firewall Checker: Diagnose NAT and Port Failures](https://illyvoip.com/resources/help-center/article/3cx-firewall-checker/): Run the 3CX Firewall Checker in a maintenance window, interpret failed tests and verify your IllyVoIP trunk after a focused network correction.
- [3CX SBC setup for IllyVoIP calls](https://illyvoip.com/resources/help-center/article/3cx-sbc-remote-phones/): Connect remote desk phones through a 3CX SBC or router phone, then verify incoming and outgoing calls through your IllyVoIP trunk.
- [How to setup Zoiper on Mobile](https://illyvoip.com/resources/help-center/article/Zoiper-mobile/): In this section, we will guide you step by step on how to use Zoiper on mobile devices
- [Understand account restrictions, recovery and closure](https://illyvoip.com/resources/help-center/article/account-restrictions-and-closure/): Distinguish a login check from a service review or account closure, and choose the appropriate recovery path.
- [Send account-security notifications through the IllyVoIP SMS API](https://illyvoip.com/resources/help-center/article/account-security-notification-illyvoip-sms-api/): Send a concise notification after a security change in your own application, using a verified recipient and one tracked IllyVoIP SMS submission per event.
- [Add and Use a Call Script in IllyVoIP Campaigns](https://illyvoip.com/resources/help-center/article/add-campaign-call-script/): Add a call script to an IllyVoIP campaign, find it in the agent dialer and keep scripts, contact notes, outcomes and callbacks separate.
- [Work in the agent workspace](https://illyvoip.com/resources/help-center/article/agent-workspace/): Find the right contact, check the call state and keep the next action close to the conversation.
- [Configure Akuvox R20A and R29 reception audio calls with IllyVoIP](https://illyvoip.com/resources/help-center/article/akuvox-r20a-sip-audio-calls/): Configure IllyVoIP reception audio on Akuvox R20A and R29 door phones. Register SIP and select the reception destination without changing access controls.
- [Algo 8180 Incoming Ring Alerts with IllyVoIP](https://illyvoip.com/resources/help-center/article/algo-8180-incoming-ring-alert/): Set up the Algo 8180 G2 Ring extension for an IllyVoIP incoming number. Check registration, alert volume, number routing and ringing behavior.
- [Connect an Algo 8188 ceiling speaker with IllyVoIP](https://illyvoip.com/resources/help-center/article/algo-8188-pbx-paging/): Set up an Algo 8188 ceiling speaker behind a PBX using IllyVoIP. Protect the paging extension and verify PoE, speaker output and caller access.
- [Connect an Algo 8301 to a PBX using IllyVoIP](https://illyvoip.com/resources/help-center/article/algo-8301-pbx-paging/): Connect an Algo 8301 paging adapter behind your PBX and IllyVoIP trunk. Protect the paging route and test amplifier audio and access restrictions.
- [Angular Browser Calling with the IllyVoIP SDK](https://illyvoip.com/resources/help-center/article/angular-illyvoip-browser-calling/): Use a single Angular service for IllyVoIP browser calling, bridge SDK events into signals and handle route changes, logout and browser-only initialization.
- [Route an incoming number to Voice API Control and answer it from your application](https://illyvoip.com/resources/help-center/article/answer-incoming-calls-voice-api/): Route incoming calls to IllyVoIP Voice API Control, answer eligible calls and reconcile existing call state safely after an application interruption.
- [Start with the API, Playground and webhooks](https://illyvoip.com/resources/help-center/article/api-and-webhooks-quick-start/): Use the IllyVoIP API Playground safely, select a multipart audio upload and distinguish live execution, credentials and webhook setup.
- [Protect the IllyVoIP app with App Lock and a relock delay](https://illyvoip.com/resources/help-center/article/app-lock-relock-delay-illyvoip/): Enable IllyVoIP App Lock with device biometrics, choose when it locks again and check the difference between relock and sign-out.
- [Continue IllyVoIP app sign-in when the browser is already signed into another account](https://illyvoip.com/resources/help-center/article/app-sign-in-browser-different-illyvoip-account/): Handle the existing-browser-account message during IllyVoIP app sign-in and choose deliberately between keeping the session and switching accounts.
- [Collect an appointment confirmation through an IllyVoIP phone call](https://illyvoip.com/resources/help-center/article/appointment-confirmation-illyvoip-voice-api/): Build a backend appointment-confirmation call with the IllyVoIP Voice API, collect a keypad choice and update the correct appointment only once.
- [Build Appointment SMS Reminders | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/appointment-sms-reminders-api/): Schedule SMS reminders in your application, handle timezones and cancellations, and use IllyVoIP to submit and track each approved message.
- [Assign and share a contact from the IllyVoIP app](https://illyvoip.com/resources/help-center/article/assign-share-contact-illyvoip-app/): Review ownership, responsibility and sharing in the IllyVoIP mobile contact editor, validate custom fields and verify the saved access deliberately.
- [Asterisk AMI Originate Calls through IllyVoIP](https://illyvoip.com/resources/help-center/article/asterisk-ami-originate-calls/): Start an approved call through your own Asterisk AMI interface, connect a staff extension to IllyVoIP and track queue, originate and hangup evidence.
- [Asterisk ARI Notification Calls with IllyVoIP](https://illyvoip.com/resources/help-center/article/asterisk-ari-notification-call/): Use your own Asterisk ARI application to originate an IllyVoIP call, play a local announcement and track events with controlled cleanup.
- [Run Asterisk in Docker with IllyVoIP](https://illyvoip.com/resources/help-center/article/asterisk-docker-pjsip-trunk/): Run Asterisk in a Linux Docker container with persistent configuration, a restricted IllyVoIP PJSIP trunk and explicit restart and rollback checks.
- [Asterisk Logger: Collect Focused SIP Troubleshooting Logs](https://illyvoip.com/resources/help-center/article/asterisk-logs-support/): Check Asterisk logging, capture one failed IllyVoIP call, restore the previous settings and share a reviewed private support excerpt.
- [Asterisk TLS and SRTP Setup | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/asterisk-pjsip-tls-srtp/): Configure verified TLS signaling and matching SDES-SRTP on an existing Asterisk PJSIP trunk, then check encryption and call behavior separately.
- [AudioCodes MP-112/MP-114 FXS Setup](https://illyvoip.com/resources/help-center/article/audiocodes-mp112-mp114-fxs-setup/): Configure an existing AudioCodes MP-112 or MP-114 FXS installation for IllyVoIP using per-port credentials, reviewed routing and saved settings.
- [Set up an authenticator and save recovery codes in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/authenticator-recovery-codes-illyvoip-app/): Enroll an authenticator in the IllyVoIP app, verify a current code, save recovery codes and complete the required new sign-in.
- [Add an authorized SIP-line selector to an IllyVoIP SDK phone](https://illyvoip.com/resources/help-center/article/authorized-sip-selector-illyvoip-sdk/): Build a server-authorized SIP identity selector for a custom IllyVoIP SDK phone and switch only after the previous owner is idle and cleaned up.
- [Add an Available/Unavailable control to an IllyVoIP SDK phone](https://illyvoip.com/resources/help-center/article/available-unavailable-illyvoip-sdk-phone/): Build a browser-phone availability control using IllyVoIP SDK register and unregister while preserving call state and handling uncertain results.
- [Connect an Avaya J179 Open SIP phone](https://illyvoip.com/resources/help-center/article/avaya-j179-open-sip-setup/): Configure an Avaya J179 running Open SIP firmware with your IllyVoIP SIP line. Check the server, sign-in, transport and incoming calls.
- [Top up your balance and manage payment methods](https://illyvoip.com/resources/help-center/article/billing-and-payment-options-on-illyvoip/): Add IllyVoIP credit, choose saved payment methods and recover from interrupted checkout without duplicate payments.
- [Birthday SMS reminders with IllyVoIP](https://illyvoip.com/resources/help-center/article/birthday-sms-reminders/): Schedule annual birthday SMS through IllyVoIP with explicit leap-day rules, local delivery windows and one durable job per recipient and year.
- [Assign IllyVoIP SIP accounts in Bria Teams](https://illyvoip.com/resources/help-center/article/bria-teams-sip-account-assignment/): Add IllyVoIP as a custom voice service in Bria Teams, assign individual SIP accounts and help users select the correct account for external calls.
- [Send IllyVoIP SMS from a Bubble backend workflow](https://illyvoip.com/resources/help-center/article/bubble-backend-sms/): Send IllyVoIP SMS from a Bubble backend workflow using private API credentials, authorised recipients and persisted retry identities.
- [Build a telephone menu for Sales and Support](https://illyvoip.com/resources/help-center/article/build-a-phone-menu/): Create a practical keypad menu in Voice Agent Studio, connect real destinations and test every branch before attaching customer calls.
- [Build a read-only IllyVoIP active-call dashboard](https://illyvoip.com/resources/help-center/article/build-read-only-active-call-view-api/): Display IllyVoIP active calls with the Voice API while preserving stale-state warnings, line scope and the distinction between call identifiers.
- [Send Calendly booking reminders through IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/calendly-booking-sms-reminders/): Send Calendly booking reminders with IllyVoIP SMS while handling signed events, cancellations, rescheduling, timezone and duplicate delivery.
- [Load IllyVoIP calls into Google Sheets](https://illyvoip.com/resources/help-center/article/call-history-google-sheets/): Import paginated IllyVoIP call-history JSON with a private Google Apps Script, protect text identifiers and keep incomplete refreshes separate.
- [Import IllyVoIP call JSON into Excel](https://illyvoip.com/resources/help-center/article/call-history-json-excel-power-query/): Import complete IllyVoIP call-history JSON into Excel Power Query, preserve identifiers and UTC timestamps, and refresh without counting duplicate pages.
- [Find why an IllyVoIP call recording is unavailable](https://illyvoip.com/resources/help-center/article/call-recording-unavailable/): Check recording eligibility, filters, processing and account access when an IllyVoIP call recording is missing or unavailable.
- [Let callers request a callback through the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/caller-requested-callback-illyvoip-voice-api/): Collect a deliberate callback request during an IllyVoIP API call, save it once and let your application manage permitted timing and follow-up.
- [Cancel an IllyVoIP Number or Order by API](https://illyvoip.com/resources/help-center/article/cancel-phone-number-api/): Use the correct owned order ID to request number cancellation, distinguish end-of-term scheduling from pending-order release and verify the result.
- [sngrep SIP Trace: Capture and Inspect an IllyVoIP Call](https://illyvoip.com/resources/help-center/article/capture-sip-call-sngrep/): Use sngrep on your PBX to collect a focused SIP trace, inspect a call flow and prepare private evidence for IllyVoIP Support.
- [Capture an IllyVoIP SIP Trace](https://illyvoip.com/resources/help-center/article/capture-sip-trace-wireshark/): Capture one authorized SIP call, inspect its signaling flow in Wireshark and prepare private evidence that IllyVoIP Support can correlate with call reports.
- [IllyVoIP Card Top-Up Declined: What to Check](https://illyvoip.com/resources/help-center/article/card-top-up-declined/): Troubleshoot a declined IllyVoIP card top-up, distinguish verification from checkout failures and check payment status before retrying.
- [Change an incoming number’s destination through the IllyVoIP API](https://illyvoip.com/resources/help-center/article/change-number-routing-api/): Change an IllyVoIP number’s incoming-call destination by API, verify the saved route and handle an uncertain response without overwriting another change.
- [Change Your PBX IP Authentication Address | IllyVoIP](https://illyvoip.com/resources/help-center/article/change-pbx-ip-authentication-address/): Move an IP-authenticated PBX to a new public address using the correct SIP line, with preparation, error checks and recovery steps.
- [Change an IllyVoIP SIP password and update devices](https://illyvoip.com/resources/help-center/article/change-sip-password-update-devices/): Rotate an IllyVoIP SIP-line password, update the devices using it and verify registration without confusing SIP credentials with the Portal login.
- [Check a phone number with Number Lookup](https://illyvoip.com/resources/help-center/article/check-a-phone-number/): Use free number analysis, review the price of an optional live lookup and understand what a result can establish.
- [Check a destination’s calling rate with the IllyVoIP Rates API](https://illyvoip.com/resources/help-center/article/check-call-rates-api/): List calling-rate countries, search destinations in the account routing context and verify the complete number with an IllyVoIP rate quote.
- [Incoming Number Not Ringing? Check Routing | IllyVoIP](https://illyvoip.com/resources/help-center/article/check-incoming-number-destination/): Check an active number’s saved destination, follow the relevant SIP, queue, forwarding or application route and collect useful support evidence.
- [MikroTik SIP Helper Troubleshooting](https://illyvoip.com/resources/help-center/article/check-mikrotik-sip-helper/): Inspect RouterOS SIP helper settings, compare an affected IllyVoIP call and test a reversible change without clearing unrelated connections.
- [pfSense VoIP NAT Troubleshooting for IllyVoIP](https://illyvoip.com/resources/help-center/article/check-pfsense-voip-nat/): Distinguish a SIP phone from a hosted PBX, inspect pfSense NAT and test only the source-port or firewall change supported by call evidence.
- [Check RTP packetization when IllyVoIP audio breaks up](https://illyvoip.com/resources/help-center/article/check-rtp-packetization-illyvoip-audio/): Measure RTP packet spacing and timestamp steps for an IllyVoIP call, distinguish loss from packetization, and test one media change at a time.
- [Disable SIP ALG on TP-Link Deco: IllyVoIP Guide](https://illyvoip.com/resources/help-center/article/check-sip-alg-tp-link-deco/): Check the SIP ALG setting on supported TP-Link Deco systems, run a controlled before-and-after VoIP test and restore the setting if it does not help.
- [Check SMS Encoding, Segments and Text Conversion](https://illyvoip.com/resources/help-center/article/check-sms-encoding-segments-conversion/): Understand GSM-7 and Unicode SMS, compare message parts, review destination-specific conversion and check the text IllyVoIP actually submitted.
- [Choose Bluetooth, earpiece or speaker during an IllyVoIP app call](https://illyvoip.com/resources/help-center/article/choose-bluetooth-speaker-illyvoip-app-call/): Select an available Bluetooth device, phone audio or speaker during an IllyVoIP Android call and check output separately from microphone mute.
- [Choose how IllyVoIP handles rejected calls](https://illyvoip.com/resources/help-center/article/choose-call-failure-handling/): Choose audio prompts or SIP-only responses for supported IllyVoIP call rejections, verify the setting and troubleshoot the actual cause.
- [Caller ID settings and custom approval requests](https://illyvoip.com/resources/help-center/article/choose-caller-id/): Choose eligible IllyVoIP caller IDs and manage custom caller ID approval requests, pending decisions and cancellations.
- [Choose call media encryption in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/choose-media-encryption-illyvoip-app/): Choose the app media security mode, understand the line default and effective mode, and check connection after a change.
- [Claim a free phone number offer](https://illyvoip.com/resources/help-center/article/claim-a-free-phone-number/): Check eligibility, choose an available number and understand review, activation and later renewal charges.
- [Collect and record opt-in before sending IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/collect-opt-in-before-illyvoip-sms/): Build a clear SMS opt-in form, keep a scoped permission record and check it before your application submits SMS through IllyVoIP.
- [Communication reviews: explain activity and follow decisions](https://illyvoip.com/resources/help-center/article/communication-reviews/): Find SMS and calling reviews, explain your use case, provide information and understand what an approval does and does not change.
- [Complete IllyVoIP verification and the Service Agreement](https://illyvoip.com/resources/help-center/article/complete-account-verification-service-agreement/): Complete IllyVoIP identity verification, review the Service Agreement and confirm the owner’s passkey signature and saved agreement copies.
- [Compose, review and send SMS in the IllyVoIP mobile app](https://illyvoip.com/resources/help-center/article/compose-review-send-sms-illyvoip-app/): Compose SMS in the IllyVoIP app, review recipients, encoding and price, then confirm sending and inspect delivery separately.
- [Asterisk PJSIP trunk and dialplan | IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-asterisk-pjsip-trunk/): Connect an Asterisk PJSIP trunk to IllyVoIP and build restricted incoming and outgoing dialplan examples with clear checks and rollback.
- [baresip Linux SIP Setup](https://illyvoip.com/resources/help-center/article/configure-baresip-linux/): Configure a private baresip account on Linux, map IllyVoIP SIP credentials, select compatible audio settings and verify registration and calling.
- [Set up a Cisco 8800 MPP phone with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-cisco-8800-mpp-phone/): Check Cisco MPP firmware, configure a SIP extension and avoid confusing the phone’s local SIP port with the server port.
- [Cisco ATA 191/192 IllyVoIP Setup](https://illyvoip.com/resources/help-center/article/configure-cisco-ata191-192/): Connect an analog handset through Cisco ATA 191/192 Multiplatform firmware, map SIP credentials per port and verify registration, dialing and incoming calls.
- [Set up Fanvil X4U V2 and V65 phones](https://illyvoip.com/resources/help-center/article/configure-fanvil-x4u-phone/): Configure Fanvil X4U V2 and V65 phones with IllyVoIP. Map SIP line fields, check transport and verify outgoing and incoming calls.
- [Set up an IllyVoIP PJSIP trunk in FreePBX](https://illyvoip.com/resources/help-center/article/configure-freepbx-pjsip-trunk/): Configure a FreePBX PJSIP trunk, restrict an outgoing test route and send incoming calls to the correct extension or ring group.
- [FreeSWITCH Gateway for IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-freeswitch-gateway/): Configure a directly managed FreeSWITCH Sofia gateway, map IllyVoIP SIP credentials and keep inbound routing separate from authorized outbound dialing.
- [FRITZ!Box 7590 SIP Setup](https://illyvoip.com/resources/help-center/article/configure-fritzbox-7590/): Configure an IllyVoIP SIP identity on a FRITZ!Box 7590, assign the intended handset and verify outgoing calls and incoming-number routing.
- [Connect FusionPBX to IllyVoIP with a SIP gateway](https://illyvoip.com/resources/help-center/article/configure-fusionpbx-sip-gateway/): Add a FusionPBX gateway, choose the right domain and SIP profile, then configure controlled outgoing routes and incoming destinations.
- [Gigaset N510 and GO-Box 100 Setup](https://illyvoip.com/resources/help-center/article/configure-gigaset-n510-ip-pro/): Set up Gigaset N510 IP PRO or GO-Box 100 with IllyVoIP. Configure SIP credentials, assign handset connections and test incoming and outgoing calls.
- [Configure Gigaset N610 and N670 IP PRO with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-gigaset-n670-ip-pro/): Set up Gigaset N610 and N670 IP PRO with IllyVoIP. Configure provider profiles, SIP accounts and handset assignments for incoming and outgoing calls.
- [Connect Grandstream DP752 cordless phones to IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-grandstream-dp752-dect/): Understand profiles, SIP accounts and handset assignments on a DP752 base, then test the correct incoming and outgoing line.
- [Set up a Grandstream GRP phone with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-grandstream-grp-phone/): Configure a Grandstream GRP SIP account, distinguish the user ID from the phone label and troubleshoot registration.
- [Configure Grandstream GXP1625 and GXP2170](https://illyvoip.com/resources/help-center/article/configure-grandstream-gxp1625/): Set up Grandstream GXP1625 and GXP2170 phones with IllyVoIP. Configure account fields, transport, line selection and incoming routing.
- [Use an analog phone with Grandstream HT801 or HT802 V2](https://illyvoip.com/resources/help-center/article/configure-grandstream-ht801-ht802-adapter/): Connect an analog handset to an HT801/HT802 V2, register the right FXS port and troubleshoot dial tone, ringing and calls.
- [Set up Grandstream HT812, HT814 and HT818](https://illyvoip.com/resources/help-center/article/configure-grandstream-ht812-ht814/): Configure IllyVoIP on Grandstream HT812, HT814 and HT818 adapters. Match profiles and FXS ports, assign each line and test analog telephones.
- [Set up a Grandstream UCM6300 SIP trunk with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-grandstream-ucm6300-trunk/): Create a UCM6300 registration trunk, assign outbound permissions and incoming rules, and troubleshoot calls separately from registration.
- [Grandstream WP826 SIP Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-grandstream-wp826/): Connect your WP826 to Wi-Fi, configure its IllyVoIP SIP account, match audio settings and check incoming and outgoing calls before using the handset.
- [Acrobits Softphone and Groundwire setup | IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-groundwire-sip-account/): Set up an IllyVoIP SIP line in Acrobits Softphone or Groundwire and check registration, encryption, incoming numbers and background calls.
- [Issabel SIP Trunk Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-issabel-pjsip-trunk/): Set up an Issabel PJSIP trunk with IllyVoIP. Follow the authentication, outbound and inbound routing steps, then check registration, caller ID and audio.
- [Linphone SIP Setup: Configure Your IllyVoIP Account](https://illyvoip.com/resources/help-center/article/configure-linphone-sip-account/): Configure Linphone with IllyVoIP SIP credentials. Follow account setup, call tests and troubleshooting, with desktop and mobile incoming-call limitations.
- [Configure caller name, emergency address and fax](https://illyvoip.com/resources/help-center/article/configure-number-extra-services/): Find optional services for your number, review fees and follow requests without confusing submission with activation.
- [PhonerLite SIP Setup](https://illyvoip.com/resources/help-center/article/configure-phonerlite/): Set up PhonerLite for IllyVoIP on Windows, map SIP credentials correctly, match transport and audio settings, and check incoming and outgoing calls.
- [Poly Edge E220/E350 SIP Setup Guide](https://illyvoip.com/resources/help-center/article/configure-poly-edge-e220-e350/): Set up a Poly Edge E220 or E350 with IllyVoIP: SIP account settings, registration, caller ID, incoming calls and troubleshooting, with model-specific notes.
- [Configure a Poly VVX 500 SIP phone with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-poly-vvx-500-phone/): Find the VVX web interface, configure one SIP line, understand inherited settings and check calls without changing other accounts.
- [Configure predictive-dialer pacing and waiting limits](https://illyvoip.com/resources/help-center/article/configure-predictive-dialer-pacing-limits/): Configure predictive campaign pacing, ready-agent thresholds, phone reuse cooldown and customer waiting limits in IllyVoIP.
- [Configure ringing and outgoing-call sounds in the IllyVoIP Webphone SDK](https://illyvoip.com/resources/help-center/article/configure-ringing-sounds-illyvoip-sdk/): Configure local incoming and outgoing sounds with the IllyVoIP SDK tones options, check browser playback and avoid duplicate ringers.
- [Sipnetic Android Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-sipnetic-android/): Connect Sipnetic for Android to your IllyVoIP SIP line, match account and audio settings, and check registration, incoming calls and microphone access.
- [Set up Snom D785 and D865 phones with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-snom-d785-phone/): Configure Snom D785 and D865 SIP identities with IllyVoIP. Follow each model’s setup path, match security and check incoming and outgoing calls.
- [Register a Snom M700 or M900](https://illyvoip.com/resources/help-center/article/configure-snom-m700/): Register Snom M700 and M900 DECT bases with IllyVoIP, assign extensions to handsets and separate pairing, SIP and multicell troubleshooting.
- [Telephone SIP App Setup on macOS](https://illyvoip.com/resources/help-center/article/configure-telephone-macos/): Configure the Telephone SIP app on macOS with your IllyVoIP line, choose audio devices, test incoming calls and collect useful diagnostics.
- [Connect VitalPBX to IllyVoIP: PJSIP trunk and call routing](https://illyvoip.com/resources/help-center/article/configure-vitalpbx-pjsip-trunk/): Set up a VitalPBX PJSIP trunk, route outgoing and incoming calls, match caller ID and audio settings, and troubleshoot each stage of the connection.
- [Connect a Yealink CP925 or CP965](https://illyvoip.com/resources/help-center/article/configure-yealink-cp965-sip/): Register Yealink CP925 and CP965 conference phones with IllyVoIP. Locate the interface, configure the SIP line and verify meeting-room audio.
- [Set up a Yealink desk phone with IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-yealink-sip-phone/): Connect a Yealink T4 or T5 SIP phone, match its account fields to IllyVoIP and check outgoing and incoming calls.
- [Set up Yealink W70B and W73P](https://illyvoip.com/resources/help-center/article/configure-yealink-w70b-dect/): Set up a Yealink W70B base or W73P kit with IllyVoIP. Pair the W73H handset, register a SIP line and assign incoming and outgoing calls.
- [Connect Yeastar P-Series Software Edition to IllyVoIP](https://illyvoip.com/resources/help-center/article/configure-yeastar-p-series-trunk/): Create a registration trunk in Yeastar P-Series, assign permitted extensions and configure incoming calls without confusing trunk types.
- [Connect Grandstream GDS3710 to IllyVoIP for Audio](https://illyvoip.com/resources/help-center/article/connect-grandstream-gds3710-audio-calls/): Map a Grandstream GDS3710 SIP account to IllyVoIP, set a doorbell call destination and verify registration and two-way audio without changing door access.
- [Correct phone-number verification documents in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/correct-number-verification-documents-illyvoip-app/): Review a phone number’s verification feedback and resubmit the required customer details and documents in the IllyVoIP app.
- [Change country and prefix restrictions in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/country-prefix-restrictions-illyvoip-app/): Edit channel-specific fraud controls in the IllyVoIP app, distinguish allowlists from blocklists and reconcile revision conflicts before saving again.
- [Add IllyVoIP click-to-call buttons to customer records in your CRM](https://illyvoip.com/resources/help-center/article/crm-click-to-call-illyvoip-sdk/): Add a reviewed click-to-call action to your CRM using one IllyVoIP SDK owner, current authorized contact data and duplicate-click protection.
- [Resolve Content Security Policy blocks in an IllyVoIP SDK integration](https://illyvoip.com/resources/help-center/article/csp-blocks-illyvoip-sdk/): Diagnose CSP violations in an IllyVoIP SDK deployment and allow only the scripts, connections and media your verified integration needs.
- [Diagnose IllyVoIP API timeouts in cURL](https://illyvoip.com/resources/help-center/article/curl-api-timeout-diagnosis/): Measure cURL connection and response timing for the IllyVoIP API, distinguish transport failures from HTTP errors, and reconcile uncertain paid operations.
- [Use an approved proxy with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/curl-approved-http-proxy/): Configure an approved HTTP proxy for IllyVoIP HTTPS API requests, separate proxy and API credentials, and verify the actual network path with a bounded read.
- [Fix cURL certificate errors with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/curl-certificate-chain-errors/): Diagnose cURL certificate-chain errors for the IllyVoIP API, check CA stores and approved proxy trust, and restore verification without insecure bypasses.
- [Delete a synchronized contact through the IllyVoIP API](https://illyvoip.com/resources/help-center/article/delete-synchronized-contact-api/): Delete an owned IllyVoIP contact by UUID or external reference, reconcile uncertain results and prevent a later CRM sync from recreating it.
- [Show a destination-rate preview before an IllyVoIP SDK call](https://illyvoip.com/resources/help-center/article/destination-rate-preview-illyvoip-sdk/): Display the current IllyVoIP destination rate before an SDK call, retain billing context and reject stale quotes when the number or account changes.
- [VoIP Jitter, Packet Loss and QoS Troubleshooting](https://illyvoip.com/resources/help-center/article/diagnose-choppy-voip-calls/): Diagnose choppy IllyVoIP calls, identify congestion and test a measured QoS change without guessing at router settings or audio causes.
- [Diagnose IllyVoIP SIP DNS Problems](https://illyvoip.com/resources/help-center/article/diagnose-sip-dns/): Check SIP hostname resolution from the affected network, interpret A, AAAA and SRV results, and separate DNS failures from registration or audio problems.
- [SIP Early Media and Missing Ringback Troubleshooting](https://illyvoip.com/resources/help-center/article/diagnose-sip-early-media/): Distinguish SIP 180, 183 and actual early audio when an IllyVoIP call is silent before answer, without mistaking progress for a final outcome.
- [Diagnose Echo on IllyVoIP Calls](https://illyvoip.com/resources/help-center/article/diagnose-voip-echo/): Locate the source of returned speech during an IllyVoIP call using handset, headset and call-path comparisons before changing audio or network settings.
- [Download an available IllyVoIP call recording from the Portal](https://illyvoip.com/resources/help-center/article/download-call-recording-portal/): Download an available IllyVoIP call recording, review any first-access charge and verify the saved audio file without exposing private calls.
- [Edit and publish a Voice Agent from the IllyVoIP app](https://illyvoip.com/resources/help-center/article/edit-publish-voice-agent-illyvoip-app/): Edit a Voice Agent in the IllyVoIP app, return flow changes to the main editor and distinguish a saved update from completed publication.
- [Email to SMS with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/email-to-sms-api-workflow/): Build a controlled email-to-SMS adapter with Python, an approved IMAP folder, persistent message identity and IllyVoIP submission records.
- [Embed an IllyVoIP SDK phone in an authorized iframe](https://illyvoip.com/resources/help-center/article/embed-illyvoip-sdk-phone-iframe/): Embed your own IllyVoIP SDK application with explicit microphone delegation, authenticated token access and a restricted parent-frame message boundary.
- [Enable agent voicemail and email delivery](https://illyvoip.com/resources/help-center/article/enable-agent-voicemail-email/): Enable an agent mailbox in IllyVoIP, configure its email address and check setup, incoming routing and message delivery.
- [Enable call recording and transcription in IllyVoIP](https://illyvoip.com/resources/help-center/article/enable-call-recordings-transcripts/): Enable IllyVoIP call recordings and transcripts, review separate access charges and verify future-call availability in Call Reports.
- [End a Voice API call and verify its status](https://illyvoip.com/resources/help-center/article/end-voice-api-call-verify-terminal-status/): End an owned IllyVoIP Voice API session using its call-control ID and verify terminal state without creating a replacement call.
- [Excel SMS Notifications through IllyVoIP](https://illyvoip.com/resources/help-center/article/excel-sms-notification/): Send a reviewed Excel row through IllyVoIP using Power Automate, a durable SharePoint claim and careful message-ID write-back.
- [Export call history and retrieve available recordings with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/export-call-history-recordings-api/): Export IllyVoIP call history by SIP identity, follow snapshot cursors and reconcile overlapping UTC calendar-day windows without duplicate rows.
- [Fanvil PA3 PBX Paging with IllyVoIP](https://illyvoip.com/resources/help-center/article/fanvil-pa3-pbx-paging/): Connect a Fanvil PA3 to a PBX using IllyVoIP. Configure a protected paging extension, controlled routes and practical audio and access tests.
- [Fanvil W610W Wi-Fi SIP Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/fanvil-w610w-sip-setup/): Join Wi-Fi and configure a Fanvil LINKVIL W610W SIP account for IllyVoIP, then test incoming calls, outgoing audio and idle behavior.
- [Verify IllyVoIP webhooks with FastAPI](https://illyvoip.com/resources/help-center/article/fastapi-webhook-receiver/): Receive IllyVoIP webhooks in FastAPI, verify raw-body HMAC signatures and timestamps, and persist a deduplicated inbox before returning an acknowledgement.
- [Find business contacts with Lead Finder](https://illyvoip.com/resources/help-center/article/find-businesses-with-lead-finder/): Search from the webphone, narrow results by location and review contact-reveal costs before confirming.
- [Find and download SMS rates in the Portal](https://illyvoip.com/resources/help-center/article/find-download-sms-rates/): Search IllyVoIP SMS rates by country or prefix, compare networks and download a CSV before reviewing your message quote.
- [Navigate the Portal and complete account setup](https://illyvoip.com/resources/help-center/article/find-your-way-around-the-portal/): Navigate IllyVoIP Portal tasks and understand the Getting started checklist, account readiness and role-dependent menus.
- [Finish an IllyVoIP mobile top-up after returning from checkout](https://illyvoip.com/resources/help-center/article/finish-mobile-top-up-checkout-return/): Return from IllyVoIP app checkout, check the original invoice and distinguish pending payment from confirmed balance credit.
- [Fix One-Way VoIP Audio on Phones and PBXs](https://illyvoip.com/resources/help-center/article/fix-one-way-voip-audio/): Troubleshoot one-way or missing audio on IllyVoIP SIP calls. Check the affected direction, audio devices, media encryption, codecs and NAT settings.
- [SIP Registration Failed: IllyVoIP Troubleshooting](https://illyvoip.com/resources/help-center/article/fix-sip-registration-failed/): Diagnose SIP registration failures step by step: authentication mode, credentials, server, transport, timeouts and the evidence to send to Support.
- [DTMF Not Working? Fix VoIP Keypad and Menu Input](https://illyvoip.com/resources/help-center/article/fix-voip-keypad-dtmf/): Fix telephone menus that do not recognize keypad digits on VoIP calls. Check when digits are sent, DTMF settings and each phone or PBX connection.
- [Follow an IllyVoIP SIP call from INVITE to hangup](https://illyvoip.com/resources/help-center/article/follow-illyvoip-sip-call-flow/): Read a SIP call trace for an IllyVoIP call, separate provisional responses from answer, and identify the leg that ended the conversation.
- [Format phone numbers and SIP URIs for IllyVoIP SDK calls](https://illyvoip.com/resources/help-center/article/format-phone-numbers-sip-uris-illyvoip-sdk/): Prepare validated phone numbers and allowed SIP URIs for IllyVoIP SDK calls, and understand the SDK’s actual target normalization.
- [SMS Phone Number Format and Validation](https://illyvoip.com/resources/help-center/article/format-validate-sms-recipient-numbers/): Normalize and confirm SMS recipients in international E.164 format, handle invalid numbers and duplicates, and separate number validation from delivery.
- [Fraud Control: countries, prefixes and call price limits](https://illyvoip.com/resources/help-center/article/fraud-control-rules/): Use country, prefix and per-minute price restrictions in IllyVoIP Fraud Control and investigate blocked calls or messages.
- [FreePBX Dial Patterns for an IllyVoIP Trunk](https://illyvoip.com/resources/help-center/article/freepbx-dial-patterns/): Build FreePBX dial patterns with clear prefix and prepend examples, verify transmitted digits and select the correct IllyVoIP trunk.
- [FreePBX Fail2Ban: Check Bans and Restore SIP Access](https://illyvoip.com/resources/help-center/article/freepbx-fail2ban-troubleshooting/): Find why FreePBX blocked a phone or trunk, correct the cause, remove a verified false-positive ban and check IllyVoIP calls safely.
- [Create a FreePBX voicemail greeting with IllyVoIP](https://illyvoip.com/resources/help-center/article/freepbx-voicemail-greeting-text-to-speech/): Generate a reviewed voicemail greeting with IllyVoIP TTS, upload it to the correct FreePBX UCP mailbox, and verify greeting precedence and the caller path.
- [Run FreeSWITCH in Docker with IllyVoIP](https://illyvoip.com/resources/help-center/article/freeswitch-docker-sip-gateway/): Build a reviewed FreeSWITCH container, protect repository credentials and Event Socket access, and verify IllyVoIP gateway persistence across recreation.
- [Gather Speech with the Voice API](https://illyvoip.com/resources/help-center/article/gather-speech-voice-api/): Add a spoken-response step to an IllyVoIP Voice API call, select a supported language, handle silence and errors, and confirm the caller’s choice.
- [Generate and download a call-history export](https://illyvoip.com/resources/help-center/article/generate-download-call-history-export/): Export IllyVoIP call history, follow report progress, download completed files and handle failed, cancelled or expired exports.
- [Generate and read a call transcript inside IllyVoIP](https://illyvoip.com/resources/help-center/article/generate-read-call-transcript/): Generate and read a call transcript inside IllyVoIP, review the quoted charge and distinguish saved Voice Agent text from new transcription.
- [Generate and review an AI call summary in IllyVoIP](https://illyvoip.com/resources/help-center/article/generate-review-ai-call-summary/): Create an AI call summary in IllyVoIP, review transcript and summary charges, follow processing states and verify the resulting key points.
- [Google Calendar SMS reminders with IllyVoIP](https://illyvoip.com/resources/help-center/article/google-calendar-sms-reminders/): Read Google Calendar instances, handle rescheduling and cancellations, and dispatch approved IllyVoIP SMS reminders through your application.
- [Synchronize selected Google Contacts into IllyVoIP](https://illyvoip.com/resources/help-center/article/google-contacts-sync/): Synchronise selected Google Contacts into IllyVoIP with People API pagination, durable external identities and explicit deletion and field-ownership rules.
- [Add IllyVoIP narration to Google Slides](https://illyvoip.com/resources/help-center/article/google-slides-text-to-speech-audio/): Generate narration with IllyVoIP, insert matching MP3 or WAV files into Google Slides, and verify playback plus linked Drive audio permissions for viewers.
- [Grafana SMS Alerts with IllyVoIP](https://illyvoip.com/resources/help-center/article/grafana-sms-alerts/): Route Grafana webhook alerts through a secure SMS receiver with incident deduplication, firing and resolved phases, and delivery tracking.
- [Use a Grandstream GSC3505 speaker with a PBX and IllyVoIP](https://illyvoip.com/resources/help-center/article/grandstream-gsc3505-pbx-paging/): Register a Grandstream GSC3505 as a protected PBX paging endpoint for IllyVoIP calls. Check auto-answer controls, audio and rejected access.
- [Set up a Grandstream GXV3370 for IllyVoIP audio calls](https://illyvoip.com/resources/help-center/article/grandstream-gxv3370-audio-setup/): Configure IllyVoIP audio calling on a Grandstream GXV3370. Map SIP account fields, select the outgoing account and verify incoming calls.
- [Grandstream GXW42xx Analog Phones with IllyVoIP](https://illyvoip.com/resources/help-center/article/grandstream-gxw42xx-analog-phones/): Map Grandstream GXW42xx FXS ports to IllyVoIP SIP lines. Configure profiles and authentication, verify cabling and test each analog telephone.
- [Gravity Forms SMS Notifications with IllyVoIP](https://illyvoip.com/resources/help-center/article/gravity-forms-sms-notifications/): Send a fixed administrator an SMS after a Gravity Forms submission using IllyVoIP, with spam checks, duplicate protection and visible failure records.
- [IllyVoIP API 429 Errors and Retry-After](https://illyvoip.com/resources/help-center/article/handle-api-429-rate-limit/): Handle IllyVoIP HTTP 429 responses with Retry-After, bounded scheduling and shared-worker coordination without confusing throttling with SMS daily limits.
- [Handle a customer conversation in the IllyVoIP mobile Agent Workspace](https://illyvoip.com/resources/help-center/article/handle-conversation-mobile-agent-workspace/): Match a caller to the right IllyVoIP contact, read their activity and save notes or follow-up in the mobile Agent Workspace.
- [Handle IllyVoIP voicemail webhooks](https://illyvoip.com/resources/help-center/article/handle-voicemail-received-webhook/): Receive IllyVoIP voicemail events, verify and deduplicate delivery, and direct authorized users to the Portal message without exposing audio.
- [Review a contact list with IllyVoIP HLR before a messaging campaign](https://illyvoip.com/resources/help-center/article/hlr-review-contact-list-illyvoip/): Review a permitted contact list with basic number analysis and selective paid IllyVoIP HLR lookups, retaining freshness and unresolved outcomes.
- [Route incoming IllyVoIP API calls around holidays and opening hours](https://illyvoip.com/resources/help-center/article/holiday-opening-hours-routing-illyvoip-voice-api/): Apply your application’s timezone, weekly hours and holiday exceptions before transferring an incoming IllyVoIP Voice API call.
- [How to contact Support and request test credit](https://illyvoip.com/resources/help-center/article/how-to-apply-for-test-credit/): Contact IllyVoIP Support, request test credit and attach relevant evidence from the app while checking ticket and upload results separately.
- [How to order a DID Number and start making calls](https://illyvoip.com/resources/help-center/article/how-to-buy-did-number/): Learn how to purchase, activate, and set up your DID number to start receiving and making calls easily.
- [How to check rates and understand how to use routing plans](https://illyvoip.com/resources/help-center/article/how-to-check-rates-and-understand-how-to-use-routing-plans/): Understand IllyVoIP rates, billing increments and routing packages, and change your voice region with saved-state checks.
- [How to configure MicroSIP](https://illyvoip.com/resources/help-center/article/how-to-configure-microsip/): In this section, we will guide you step by step on how to download and install MicroSIP and connect your SIP account on ILLYVOIP.
- [Create SIP lines and invite agents](https://illyvoip.com/resources/help-center/article/how-to-create-sip-account/): Create IllyVoIP SIP lines and agents, manage invitations and pending setup, and assign the permissions your team needs.
- [Bria Solo Setup with IllyVoIP: Moving from X-Lite](https://illyvoip.com/resources/help-center/article/how-to-install-and-use-x-lite/): Move your IllyVoIP calling setup from X-Lite to Bria Solo. Configure the voice account in Bria Portal, sign into the client and verify incoming calls.
- [How to install and use Zoiper 3 with ILLYVOIP](https://illyvoip.com/resources/help-center/article/how-to-install-and-use-zoiper-3-with-illyvoip/): In this article we will show how to install Zoiper 3 and connect with ILLYVOIP
- [How to Reset Your Password](https://illyvoip.com/resources/help-center/article/how-to-reset-your-password/): In this guide, we’ll show you how to reset or update your IllyVOIP account password quickly and easily.
- [3CX SIP Trunk Setup and Outbound Rules](https://illyvoip.com/resources/help-center/article/how-to-set-up-3cx-with-illyvoip/): Connect a 3CX trunk to IllyVoIP, route incoming calls and check outbound rule order, digit transformations, caller ID and test results.
- [How to configure Zoiper 5](https://illyvoip.com/resources/help-center/article/how-to-setup-zoiper5/): In this article, we will guide you through the process of installing and configuring Zoiper 5 to work seamlessly.
- [How to create an IllyVoIP account](https://illyvoip.com/resources/help-center/article/how-to-sign-up-for-a-illyvoip-account/): This article will explain the steps to create your own ILLYVOIP Portal account
- [HubSpot SMS Workflow with IllyVoIP](https://illyvoip.com/resources/help-center/article/hubspot-sms-api-workflow/): Send approved HubSpot notifications through IllyVoIP with a custom code action, durable event claims and separate submission and delivery records.
- [Connect HubSpot and review contact-sync changes](https://illyvoip.com/resources/help-center/article/hubspot-sync/): Connect HubSpot, choose contact-sync review policies and resolve CRM update decisions without overwriting the wrong contact values.
- [Troubleshoot incoming IllyVoIP calls on a locked Android phone](https://illyvoip.com/resources/help-center/article/illyvoip-android-incoming-calls-locked/): Troubleshoot IllyVoIP incoming calls on a locked Android phone by checking the destination, selected SIP line, connection and call permissions.
- [Troubleshoot incoming IllyVoIP calls on iPhone](https://illyvoip.com/resources/help-center/article/illyvoip-iphone-incoming-calls/): Troubleshoot IllyVoIP incoming calls on iPhone by checking the receiving line, Portal destination, Focus settings and foreground versus locked behavior.
- [Import a CSV contact list through the IllyVoIP app](https://illyvoip.com/resources/help-center/article/import-csv-contacts-illyvoip-app/): Import a contact CSV through the IllyVoIP app by selecting a group, previewing columns, checking field mappings and reviewing the result.
- [Export Outlook contacts and import a reviewed CSV into IllyVoIP](https://illyvoip.com/resources/help-center/article/import-outlook-contacts/): Export contacts from Outlook and import a reviewed CSV into IllyVoIP with deliberate phone-column mapping, encoding and duplicate handling.
- [Import selected phone contacts into IllyVoIP from the mobile app](https://illyvoip.com/resources/help-center/article/import-selected-phone-contacts-illyvoip-app/): Choose phone contacts to import into IllyVoIP, grant device permission and check the imported, updated and skipped results.
- [Import vCard contacts into IllyVoIP through CSV](https://illyvoip.com/resources/help-center/article/import-vcard-contacts-csv/): Convert vCard contacts into a reviewed CSV, resolve multiple phone numbers, and map a small sample into the IllyVoIP Portal before importing the full list.
- [Improve names, dates and acronyms in IllyVoIP-generated speech](https://illyvoip.com/resources/help-center/article/improve-pronunciation-illyvoip-text-to-speech/): Improve IllyVoIP text-to-speech pronunciation with clear spoken wording, the right language and voice, and controlled short audio tests.
- [Set up queues and pause members in IllyVoIP](https://illyvoip.com/resources/help-center/article/inbound-queue/): Configure IllyVoIP queues and safely pause or resume a member, with saved-state checks and clear limits on what pausing changes.
- [Show the caller’s contact record when an IllyVoIP SDK call arrives](https://illyvoip.com/resources/help-center/article/incoming-call-contact-screen-pop-illyvoip-sdk/): Show an authorized contact match for an incoming IllyVoIP SDK call, handle ambiguous numbers and prevent late lookups from replacing the current caller.
- [Add browser calling with the Webphone SDK](https://illyvoip.com/resources/help-center/article/integrate-webphone-sdk/): Install the official IllyVoIP Webphone SDK using hosted assets or a matched versioned bundle, then configure managed authentication and verify browser calling.
- [Troubleshoot SIP 488](https://illyvoip.com/resources/help-center/article/investigate-sip-488/): Investigate SIP 488 using the rejected offer, codec overlap and media-encryption settings instead of assuming every rejection has the same cause.
- [Transcribe iPhone Voice Memos with IllyVoIP](https://illyvoip.com/resources/help-center/article/iphone-voice-memo-transcription/): Export rendered iPhone Voice Memos audio, convert it to a supported file, and transcribe it with IllyVoIP while preserving the original and reviewing accuracy.
- [JavaScript Speech-to-Text API with IllyVoIP](https://illyvoip.com/resources/help-center/article/javascript-speech-to-text-api/): Transcribe MP3 or WAV audio through IllyVoIP using server-side JavaScript, multipart upload and careful timeout and response handling.
- [JavaScript Text-to-Speech API Guide](https://illyvoip.com/resources/help-center/article/javascript-text-to-speech-api/): Generate WAV or MP3 speech with the IllyVoIP TTS API in Node.js. Select a voice, save the response and recover audio without another synthesis.
- [Build keyboard-accessible call controls with the IllyVoIP SDK](https://illyvoip.com/resources/help-center/article/keyboard-accessible-illyvoip-sdk-controls/): Build keyboard-operable call controls around the IllyVoIP SDK with clear focus, call-state announcements and pending-action handling.
- [Build a short keypad survey with the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/keypad-survey-illyvoip-voice-api/): Collect a short, versioned keypad survey with IllyVoIP call control, validate each answer and retain partial results without duplicate submissions.
- [Import and review Voice Agent knowledge CSV files in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/knowledge-csv-import-illyvoip-app/): Import and review Voice Agent knowledge CSV files in the IllyVoIP app, preserve disabled entries and apply the parent agent update deliberately.
- [Build a language-selection phone menu with the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/language-menu-illyvoip-voice-api/): Offer an explicit keypad language choice and use compatible Voice API language and voice values for later prompts and transfers.
- [Register an IllyVoIP SIP account with the Linphone SDK](https://illyvoip.com/resources/help-center/article/linphone-sdk-sip-registration/): Build a native C registration example with the Linphone SDK and IllyVoIP. Protect credentials, handle registration states and unregister cleanly.
- [Listen to or coach a live call from the IllyVoIP app](https://illyvoip.com/resources/help-center/article/listen-coach-live-call-illyvoip-app/): Use the IllyVoIP app’s authorized Listen and Coach actions, select the receiving SIP account and end the supervision leg safely.
- [Find and listen to voicemail](https://illyvoip.com/resources/help-center/article/listen-to-voicemail/): Choose the right mailbox, listen to saved messages and check why an expected voicemail is missing.
- [How to set up MagnusBilling with ILLYVOIP](https://illyvoip.com/resources/help-center/article/magnusbilling/): Step-by-Step Guide to Configuring MagnusBilling with your ILLYVOIP Account
- [Build and maintain your Voice Agent knowledge](https://illyvoip.com/resources/help-center/article/maintain-voice-agent-knowledge/): Maintain IllyVoIP Voice Agent knowledge, import and export CSV safely, preserve disabled entries and check byte limits before applying changes.
- [Generate and save IllyVoIP speech audio in Make](https://illyvoip.com/resources/help-center/article/make-text-to-speech/): Generate speech with the IllyVoIP TTS API in Make, decode the returned base64 audio and save a usable MP3 or WAV file.
- [Manage CRM Companies with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/manage-companies-api/): Use the Companies API to manage owned company records, link contacts and understand exactly what archiving changes.
- [Configure microphone processing for IllyVoIP SDK calls](https://illyvoip.com/resources/help-center/article/microphone-processing-illyvoip-sdk/): Set browser microphone-processing preferences for IllyVoIP SDK calls and compare actual behavior without treating constraints as guaranteed audio quality.
- [Send an IllyVoIP SMS from a selected Microsoft Teams message](https://illyvoip.com/resources/help-center/article/microsoft-teams-message-sms/): Send an approved SMS from a selected Microsoft Teams message using IllyVoIP and Power Automate. Track approval, duplicate protection and delivery.
- [Build a missed-call follow-up list from IllyVoIP call history](https://illyvoip.com/resources/help-center/article/missed-call-follow-up-list-illyvoip-api/): Build a reviewed follow-up list from IllyVoIP incoming call history, distinguish no answer from other failures and preserve human follow-up decisions.
- [MizuDroid SIP setup on Android | IllyVoIP](https://illyvoip.com/resources/help-center/article/mizudroid-android-sip-setup/): Configure MizuDroid with your IllyVoIP SIP line, check transport and audio settings, and test outgoing, incoming and background calls.
- [Monitor live calls and review performance](https://illyvoip.com/resources/help-center/article/monitor-live-calls-and-performance/): Use Realtime Operations for current activity and historical reports for completed calls, agents and phone numbers.
- [Nagios Core SMS Alerts with IllyVoIP](https://illyvoip.com/resources/help-center/article/nagios-core-sms-alerts/): Configure Nagios Core problem and recovery SMS alerts through IllyVoIP with a private outbox, safe notification macros and explicit delivery tracking.
- [Next.js Browser Calling with the IllyVoIP SDK](https://illyvoip.com/resources/help-center/article/nextjs-illyvoip-browser-calling/): Add IllyVoIP calling to Next.js App Router with a browser-only phone panel, a protected token route and deliberate navigation and logout handling.
- [Test IllyVoIP webhooks locally with ngrok](https://illyvoip.com/resources/help-center/article/ngrok-local-webhook-testing/): Expose a development IllyVoIP webhook receiver with ngrok, inspect deliveries safely, understand signed replays and retire the test endpoint afterward.
- [Odoo SMS Notifications with IllyVoIP](https://illyvoip.com/resources/help-center/article/odoo-sms-workflow/): Build an Odoo 19 order-notification workflow with an approved outbox, authenticated queue and IllyVoIP SMS delivery tracking.
- [Keep one IllyVoIP SDK phone owner across browser tabs](https://illyvoip.com/resources/help-center/article/one-illyvoip-sdk-owner-browser-tabs/): Coordinate one IllyVoIP SDK owner across same-origin tabs using a Web Lock held through initialization and orderly cleanup.
- [Open telephone links with the IllyVoIP Android app](https://illyvoip.com/resources/help-center/article/open-telephone-links-illyvoip-android/): Open a tel link in the IllyVoIP Android dialer, check the number and place the call deliberately without assuming default-phone behavior.
- [Order a phone number in the IllyVoIP app and follow its status](https://illyvoip.com/resources/help-center/article/order-phone-number-illyvoip-app-follow-status/): Order a number through the IllyVoIP app, review requirements and current pricing, and follow the saved order after an interrupted response.
- [Let callers check an order status with the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/order-status-phone-line-illyvoip-voice-api/): Build an authenticated order-status phone workflow with IllyVoIP Voice API keypad input, a scoped backend lookup and safe spoken responses.
- [Find, quote and order a phone number by API](https://illyvoip.com/resources/help-center/article/order-virtual-number-api/): Browse IllyVoIP numbers, quote an exact available selection and submit an unchanged order with its pricing fingerprint and retry key.
- [Organize companies and contact fields](https://illyvoip.com/resources/help-center/article/organize-companies-and-contact-fields/): Change contact custom-field definitions carefully, retain integration keys and verify existing values and import mappings after saving.
- [Organize your contacts](https://illyvoip.com/resources/help-center/article/organize-contacts/): Give your team useful contact information with clear responsibility and appropriate access.
- [Create a Voice API call and check backend readiness](https://illyvoip.com/resources/help-center/article/outbound-voice-api-notification/): Place and control an outbound IllyVoIP Voice API call, with backend-readiness checks, durable call identity and safe recovery from uncertain responses.
- [Send an approved Outlook email as an IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/outlook-email-to-sms/): Send reviewed Outlook email notifications through IllyVoIP SMS. Configure the trigger, approval, duplicate protection and delivery checks.
- [Review and confirm a paid HLR lookup in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/paid-hlr-lookup-illyvoip-app/): Run free number analysis, review the app’s exact HLR quote and confirm a paid lookup without repeating an uncertain request blindly.
- [Panasonic KX-TGP600 Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/panasonic-kx-tgp600-sip-setup/): Configure a Panasonic KX-TGP600 SIP line, assign cordless handsets and verify outgoing calls, incoming ringing and two-way audio with IllyVoIP.
- [Convert PDF text to audio with IllyVoIP](https://illyvoip.com/resources/help-center/article/pdf-to-audio-api/): Extract and review PDF text, split it into bounded requests, and generate ordered IllyVoIP audio files without uploading the PDF itself.
- [Phone Number Lookup and HLR API Guide | IllyVoIP](https://illyvoip.com/resources/help-center/article/phone-number-lookup-hlr-api/): Use the IllyVoIP Lookup API for number metadata, choose optional paid HLR and understand freshness, costs and result limitations.
- [Phone-Number Order Documents API](https://illyvoip.com/resources/help-center/article/phone-number-order-documents-api/): Continue an existing IllyVoIP number order, submit supporting documents in the appropriate state and distinguish document storage from regulatory approval.
- [Build SMS reminders for upcoming IllyVoIP phone-number renewals](https://illyvoip.com/resources/help-center/article/phone-number-renewal-sms-reminders-illyvoip-api/): Read IllyVoIP number-order renewal dates and send a tracked reminder to an approved account contact without changing renewal or billing settings.
- [PJSUA SIP account setup | IllyVoIP](https://illyvoip.com/resources/help-center/article/pjsua-sip-client/): Configure a protected PJSUA account for IllyVoIP, inspect registration, select audio devices and test incoming and outgoing calls.
- [Register an IllyVoIP SIP line with PJSUA2](https://illyvoip.com/resources/help-center/article/pjsua2-sip-registration/): Build a C++ PJSUA2 registration example for IllyVoIP. Keep credentials private, handle callbacks and unregister with bounded waits.
- [Play a private IllyVoIP recording through your application backend](https://illyvoip.com/resources/help-center/article/play-private-recording-backend/): Serve an authorized IllyVoIP call recording through your backend, keep the API key private and handle audio seeking and processing responses.
- [Transcribe a long podcast with IllyVoIP](https://illyvoip.com/resources/help-center/article/podcast-transcription-audio-manifest/): Split a long podcast into verified audio segments, track each IllyVoIP transcription request, and assemble reviewed text without blind retries.
- [Poly Trio C60 SIP Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/poly-trio-c60-sip-setup/): Connect a Poly Trio C60 to IllyVoIP using the correct SIP profile, account settings and audio policy, then verify incoming and outgoing calls.
- [Bring your existing number to IllyVoIP](https://illyvoip.com/resources/help-center/article/port-your-number/): Prepare a number-porting request, supply matching account details and follow its progress without cancelling your existing service too early.
- [Set your portal preferences](https://illyvoip.com/resources/help-center/article/portal-preferences/): Make the portal easier to use, with the right language, time display and notification choices.
- [Mock IllyVoIP API responses in Postman](https://illyvoip.com/resources/help-center/article/postman-mock-api-responses/): Create synthetic IllyVoIP responses in a separate Postman mock, isolate credentials, test client failures and distinguish fixtures from live acceptance.
- [Run read-only IllyVoIP API checks in Postman](https://illyvoip.com/resources/help-center/article/postman-read-only-collection-runner/): Build a read-only IllyVoIP Postman collection, run one bounded local iteration, check response contracts and investigate failures without paid operations.
- [Build a Power BI report from IllyVoIP calls](https://illyvoip.com/resources/help-center/article/power-bi-call-history-report/): Build and reconcile a Power BI report from a complete IllyVoIP call-history export, preserving call IDs, UTC dates and clearly defined reporting measures.
- [Add IllyVoIP narration to PowerPoint](https://illyvoip.com/resources/help-center/article/powerpoint-narration-text-to-speech/): Generate slide narration with IllyVoIP TTS, insert MP3 or WAV files in PowerPoint, and verify playback, timing and the saved presentation.
- [Review and manage suppressed numbers in a predictive campaign](https://illyvoip.com/resources/help-center/article/predictive-campaign-suppressed-numbers/): Review numbers on hold in an IllyVoIP predictive campaign and use Allow once, Block number or Remove block with the correct permissions.
- [Prepare a calling campaign in the IllyVoIP mobile app](https://illyvoip.com/resources/help-center/article/prepare-calling-campaign-illyvoip-mobile-app/): Prepare an IllyVoIP calling campaign in the mobile manager, review mode-specific settings and verify readiness before starting paid calls.
- [Prepare an outbound campaign](https://illyvoip.com/resources/help-center/article/prepare-campaign/): Prepare the campaign and its team before starting outbound traffic.
- [Prepare an AI voice agent](https://illyvoip.com/resources/help-center/article/prepare-voice-agent/): Prepare an IllyVoIP Voice Agent, preview its voice, review languages and knowledge, and check publishing before attaching incoming calls.
- [Send a private document link with the IllyVoIP SMS API](https://illyvoip.com/resources/help-center/article/private-document-link-illyvoip-sms-api/): Send an IllyVoIP SMS linking to a private document in your application, preserving access checks, link expiry and delivery tracking without exposing the file.
- [Prometheus Alertmanager SMS Alerts | IllyVoIP](https://illyvoip.com/resources/help-center/article/prometheus-alertmanager-sms/): Connect Prometheus Alertmanager to IllyVoIP SMS through a protected webhook adapter with durable deduplication, firing and resolved events, and delivery checks.
- [Provision a SIP client with the IllyVoIP SIP API](https://illyvoip.com/resources/help-center/article/provision-sip-client-api/): Select an authorized SIP identity, request IllyVoIP bootstrap settings securely and manage API-derived SIP credentials throughout their lifecycle.
- [PRTG SMS Alerts with IllyVoIP](https://illyvoip.com/resources/help-center/article/prtg-sms-alerts/): Connect PRTG alerts to IllyVoIP using a secure form-to-JSON receiver, with incident-level duplicate protection and separate SMS delivery tracking.
- [Python Speech-to-Text API with IllyVoIP](https://illyvoip.com/resources/help-center/article/python-speech-to-text-api/): Upload MP3 or WAV audio from Python to IllyVoIP, validate the transcription response and save text while handling paid-request failures carefully.
- [Python Text-to-Speech API with IllyVoIP](https://illyvoip.com/resources/help-center/article/python-text-to-speech-api/): Generate speech with IllyVoIP from Python, choose a catalog voice, decode MP3 audio and preserve request records for safe recovery.
- [IllyVoIP WebRTC SDK in React](https://illyvoip.com/resources/help-center/article/react-webrtc-phone-sdk/): Connect the IllyVoIP WebRTC Phone SDK to React with server-issued tokens, one phone owner, serialized cleanup and safe handling of component unmounts.
- [Add an IllyVoIP read-aloud button to messages in your application](https://illyvoip.com/resources/help-center/article/read-aloud-message-illyvoip-speech-api/): Add a user-triggered read-aloud action with IllyVoIP text-to-speech, private audio access and clear playback and cancellation states.
- [Read SIP headers for IllyVoIP call troubleshooting](https://illyvoip.com/resources/help-center/article/read-sip-headers-illyvoip-troubleshooting/): Read a sanitized SIP exchange for an IllyVoIP call, distinguish routing and identity fields, and correlate the result with the Portal safely.
- [Read a Voice Agent call report and its usage charge](https://illyvoip.com/resources/help-center/article/read-voice-agent-call-report-charges/): Understand a Voice Agent report’s decision, action, transcript, recording and AI usage charge alongside the call result.
- [Receive verified IllyVoIP webhook events in n8n](https://illyvoip.com/resources/help-center/article/receive-illyvoip-webhooks-n8n/): Receive IllyVoIP events in n8n through a verified durable inbox, protect the production webhook and prevent duplicate workflow effects.
- [Recover IllyVoIP calling on a reset Yealink W70B base](https://illyvoip.com/resources/help-center/article/recover-illyvoip-reset-yealink-w70b/): Recover a reset W70B by checking handset pairing, restoring its IllyVoIP SIP account and reviewing incoming and outgoing line assignments.
- [Recover a lost IllyVoIP API response without duplicating an operation](https://illyvoip.com/resources/help-center/article/recover-lost-api-response/): Recover an uncertain SMS, phone-number order or Voice API request using its original identity and service-specific status checks.
- [Redeem IllyVoIP Reward Points or Convert to Balance](https://illyvoip.com/resources/help-center/article/redeem-reward-points-account-balance/): Convert available reward points to IllyVoIP balance, redeem rewards and check request status without confusing pending or reserved points.
- [Reject anonymous incoming IllyVoIP calls on a supported Yealink phone](https://illyvoip.com/resources/help-center/article/reject-anonymous-illyvoip-calls-yealink/): Use local anonymous-call rejection on a documented Yealink SIP-T73U account and test its effect on incoming IllyVoIP calls.
- [Remove an agent and finish pending cleanup from the IllyVoIP app](https://illyvoip.com/resources/help-center/article/remove-agent-pending-cleanup-illyvoip-app/): Review an agent deletion’s impact in the IllyVoIP app, choose permitted work handling and follow a pending cleanup operation to completion.
- [Remove an agent from a campaign after finishing reserved work](https://illyvoip.com/resources/help-center/article/remove-campaign-agent-safely/): Remove an IllyVoIP campaign member after resolving reserved contacts, active calls and unfinished wrap-up, then verify remaining membership.
- [Renew IllyVoIP seats and manage auto-renewal](https://illyvoip.com/resources/help-center/article/renew-sip-agent-seat-auto-renewal/): Review an IllyVoIP paid seat subscription, renew it deliberately and verify auto-renewal without confusing renewal with deleting a line.
- [Request an IllyVoIP Account Manager](https://illyvoip.com/resources/help-center/article/request-account-manager-illyvoip/): Submit an IllyVoIP Account Manager request with clear business and destination details, then follow the decision and assignment status.
- [Request More Concurrent Calls | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/request-call-capacity-increase/): Find your concurrent-call and CPS limits, request the capacity you need and check the decision in the IllyVoIP Portal.
- [Request a Higher Daily SMS Limit in IllyVoIP](https://illyvoip.com/resources/help-center/article/request-higher-daily-sms-limit/): Submit an IllyVoIP daily SMS limit request, explain your use case, attach evidence and track approval or requests for more information.
- [Request an SMS Sender ID and Submit Documents](https://illyvoip.com/resources/help-center/article/request-sms-sender-id-document-review/): Request an IllyVoIP SMS Sender ID, attach supporting documents, understand review statuses and respond to information requests before using an approved name.
- [Restore a Yealink desk phone’s IllyVoIP service after a factory reset](https://illyvoip.com/resources/help-center/article/restore-yealink-illyvoip-after-factory-reset/): Restore a reset Yealink SIP desk phone using the correct IllyVoIP line, registration settings and incoming-number route.
- [Retire and delete a Voice Agent without leaving numbers attached](https://illyvoip.com/resources/help-center/article/retire-delete-voice-agent/): Retire an IllyVoIP Voice Agent by moving incoming numbers, checking active work and verifying deletion or a pending recovery state.
- [Create a reusable IllyVoIP speech-prompt library for Voice API calls](https://illyvoip.com/resources/help-center/article/reusable-speech-prompts-illyvoip-voice-api/): Generate and version approved speech assets with IllyVoIP, host playable audio and use it on eligible Voice API calls without reusing call-scoped capabilities.
- [Review agent performance in the Portal](https://illyvoip.com/resources/help-center/article/review-agent-performance/): Filter agent reports, interpret answer rates and presence, and open the matching call history in your IllyVoIP Portal.
- [Review existing IllyVoIP number orders and renewal dates with the API](https://illyvoip.com/resources/help-center/article/review-number-orders-renewal-dates-api/): Read IllyVoIP number-order status, recurring fees and renewal dates with the API without purchasing, cancelling or changing routing.
- [Review incoming phone-number performance](https://illyvoip.com/resources/help-center/article/review-phone-number-performance/): Compare incoming-number activity by month or across all time, including former numbers, call duration and usage costs.
- [Rotate an IllyVoIP API key without losing track of integrations](https://illyvoip.com/resources/help-center/article/rotate-illyvoip-api-key/): Rotate an IllyVoIP API key, update dependent services and restore API-provisioned SIP clients while preserving uncertain operations and separate SIP passwords.
- [Check RTP payload types on IllyVoIP calls](https://illyvoip.com/resources/help-center/article/rtp-payload-type-sdp-troubleshooting/): Compare RTP payload types with the negotiated SDP on each IllyVoIP call leg, separating speech, telephone events and protected media.
- [Run and supervise a calling campaign](https://illyvoip.com/resources/help-center/article/run-and-supervise-campaigns/): Run an IllyVoIP campaign, supervise readiness and outcomes, find due callbacks and complete the follow-up without duplicate attempts.
- [Salesforce SMS Integration with IllyVoIP](https://illyvoip.com/resources/help-center/article/salesforce-sms-api/): Create a controlled Salesforce SMS notification record, authenticate with Named Credentials and submit through an asynchronous IllyVoIP API callout.
- [Schedule appointments and contact follow-ups](https://illyvoip.com/resources/help-center/article/schedule-contact-follow-ups/): Save a follow-up for the correct contact, check its timezone and understand reminders and campaign callbacks.
- [Save a chosen call outcome from an IllyVoIP SDK dialer to Contacts](https://illyvoip.com/resources/help-center/article/sdk-call-outcome-illyvoip-contacts/): Capture an agent-selected call outcome in a custom IllyVoIP SDK dialer and update the correct Contact without clearing existing fields.
- [Send CSV SMS with Python | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/send-csv-sms-python/): Validate a CSV, send reviewed SMS rows with a local ledger, and preserve accepted and uncertain submissions when restarting a batch.
- [Send DTMF with the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/send-dtmf-voice-api/): Send a reviewed keypad sequence on an active Voice API call, control tone timing and handle uncertain results without repeating remote menu actions.
- [Text a requested information link during an IllyVoIP API call](https://illyvoip.com/resources/help-center/article/send-requested-link-during-illyvoip-call/): Collect a caller’s request for an information link and submit one authorized SMS through IllyVoIP while tracking delivery separately.
- [Send an SMS with the IllyVoIP API and track delivery](https://illyvoip.com/resources/help-center/article/send-sms-api-track-delivery/): Send and reconcile SMS API batches using accepted message IDs, duplicate removals, rejected recipients and separate delivery and charge states.
- [Send SMS in C# and ASP.NET Core | IllyVoIP API](https://illyvoip.com/resources/help-center/article/send-sms-csharp-aspnet-core/): Build a server-side C# SMS integration with IllyVoIP using HttpClient, durable request keys, clear error handling and delivery webhooks.
- [Django SMS Integration with IllyVoIP](https://illyvoip.com/resources/help-center/article/send-sms-django-transactions/): Use Django transactions and a durable outbox to send IllyVoIP SMS after commit, preserve retry identity and handle unknown outcomes.
- [Send SMS from Go with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/send-sms-go-api/): Build a Go SMS client with JSON encoding, bounded HTTP requests, stable idempotency keys and careful handling of partial or uncertain results.
- [Send SMS from Google Sheets | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/send-sms-google-sheets/): Use Apps Script to send one approved spreadsheet row through IllyVoIP and retain submission IDs without automatically resending uncertain messages.
- [Home Assistant SMS Notifications with IllyVoIP](https://illyvoip.com/resources/help-center/article/send-sms-home-assistant/): Configure Home Assistant RESTful Command for IllyVoIP SMS, protect your API key and handle repeated triggers and uncertain send results.
- [Send SMS from Java | IllyVoIP API Guide](https://illyvoip.com/resources/help-center/article/send-sms-java-api/): Send SMS from Java with HttpClient and the IllyVoIP API. Serialize JSON safely, preserve request keys and distinguish queued messages from delivery.
- [Send SMS to Kosovo by API | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/send-sms-kosovo-api/): Send an SMS to a Kosovo number through IllyVoIP, check Albanian text and sender requirements, then follow the actual delivery result.
- [Send SMS with Laravel and the IllyVoIP API](https://illyvoip.com/resources/help-center/article/send-sms-laravel-queue/): Build a Laravel SMS job with protected credentials, a durable notification record, stable retry identity and separate delivery tracking.
- [Send IllyVoIP SMS from Make.com](https://illyvoip.com/resources/help-center/article/send-sms-make/): Map a Make.com HTTP request to IllyVoIP SMS, preserve a durable notification key and handle incomplete executions without duplicating messages.
- [Send SMS from n8n | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/send-sms-n8n/): Connect n8n to IllyVoIP with an HTTP Request node, map approved messages, retain request keys and handle submission and delivery separately.
- [Send SMS from Node-RED](https://illyvoip.com/resources/help-center/article/send-sms-node-red/): Build a Node-RED HTTP flow for IllyVoIP SMS with protected credentials, a durable notification identity and separate acceptance and delivery handling.
- [Send SMS verification codes with the IllyVoIP API](https://illyvoip.com/resources/help-center/article/send-sms-otp-application-illyvoip-api/): Send an application-generated one-time code with the IllyVoIP SMS API and separate message delivery from secure code verification.
- [Send SMS with PHP and the IllyVoIP API](https://illyvoip.com/resources/help-center/article/send-sms-php-api/): Send IllyVoIP SMS from PHP with cURL, protect your API key, preserve request identity and handle accepted recipients, HTTP errors and delivery status.
- [Send SMS with Power Automate](https://illyvoip.com/resources/help-center/article/send-sms-power-automate/): Configure a Power Automate HTTP action for IllyVoIP SMS, protect run-history data and handle retries without creating duplicate notifications.
- [Send SMS with PowerShell and IllyVoIP](https://illyvoip.com/resources/help-center/article/send-sms-powershell-api/): Send an IllyVoIP SMS from PowerShell 7 with UTF-8 JSON, protected credentials, saved request identity and explicit HTTP and delivery-status handling.
- [Send SMS from Zapier](https://illyvoip.com/resources/help-center/article/send-sms-zapier/): Use Webhooks by Zapier to submit an IllyVoIP SMS, preserve a stable message key and track delivery without turning workflow replays into duplicate sends.
- [How to send SMS and review message costs](https://illyvoip.com/resources/help-center/article/send-sms/): Choose an approved sender, add single or bulk recipients, check message segments and review the cost before sending SMS.
- [Set up IllyVoIP on iPhone, Android and Windows](https://illyvoip.com/resources/help-center/article/set-up-illyvoip-apps/): Set up IllyVoIP on iPhone, Android or Windows: account sign-in, permissions, audio, outgoing calls and incoming-number routing.
- [Share Your IllyVoIP Referral Link and Track Earnings](https://illyvoip.com/resources/help-center/article/share-referral-link-track-earnings/): Find your IllyVoIP referral link, follow invitation qualification and distinguish service-credit conversion from an eligible cash payout.
- [Shopify Order SMS Notifications with IllyVoIP](https://illyvoip.com/resources/help-center/article/shopify-order-sms-notifications/): Build a Shopify paid-order SMS workflow with webhook HMAC verification, approved recipients, duplicate protection and IllyVoIP delivery tracking.
- [SIP 403 Forbidden: IllyVoIP Troubleshooting](https://illyvoip.com/resources/help-center/article/sip-403-forbidden-troubleshooting/): Separate SIP registration and call rejection, check the correct IllyVoIP identity and collect evidence for a 403 Forbidden response.
- [SIP 404 Not Found: Check Dialing and PBX Routing](https://illyvoip.com/resources/help-center/article/sip-404-not-found/): Trace a SIP 404 to the responding system, inspect the actual dialed address and check PBX number transformations without guessing the cause.
- [Investigate SIP 406 Not Acceptable on IllyVoIP](https://illyvoip.com/resources/help-center/article/sip-406-not-acceptable/): Investigate SIP 406 Not Acceptable on an IllyVoIP connection. Identify the responding system, inspect Accept headers and distinguish 415 and 488.
- [SIP 408 Request Timeout: Phone and PBX Troubleshooting](https://illyvoip.com/resources/help-center/article/sip-408-request-timeout/): Separate a SIP 408 response from a local timeout, identify the affected connection and collect the right evidence before changing settings.
- [SIP 480, 486 and 603: IllyVoIP Call Troubleshooting](https://illyvoip.com/resources/help-center/article/sip-480-486-603-troubleshooting/): Compare unavailable, busy and declined call responses using recipient state, IllyVoIP routing and a focused SIP trace.
- [SIP 487 Request Terminated on IllyVoIP Calls](https://illyvoip.com/resources/help-center/article/sip-487-request-terminated/): Read SIP 487 alongside CANCEL and call-leg evidence to distinguish canceled attempts, answered branches and genuine calling problems.
- [SIP 500 and 503 Troubleshooting with IllyVoIP](https://illyvoip.com/resources/help-center/article/sip-500-503-troubleshooting/): Investigate SIP 500 and 503 using the failed request, responding hop, call timing and IllyVoIP records without assuming an outage or retrying blindly.
- [What is SIP Account & Trunk](https://illyvoip.com/resources/help-center/article/sip-account-trunk/): Understand what SIP is and how it is used for VoIP communication
- [SIP Calls Dropping After 30 Seconds](https://illyvoip.com/resources/help-center/article/sip-call-drops-after-30-seconds/): Find the evidence behind an IllyVoIP call disconnecting around 30 seconds, including ACK handling, routing and the observed hangup initiator.
- [Trace who cancelled an unanswered IllyVoIP SIP call](https://illyvoip.com/resources/help-center/article/sip-cancel-troubleshooting/): Identify the sender of SIP CANCEL on an unanswered IllyVoIP call and distinguish cancellation, rejection and answer-race behavior.
- [Test SIP OPTIONS with sipsak | IllyVoIP](https://illyvoip.com/resources/help-center/article/sip-options-sipsak/): Use a bounded SIP OPTIONS check to investigate IllyVoIP signaling reachability, interpret replies and collect a useful support report.
- [Check SIP caller ID and P-Asserted-Identity](https://illyvoip.com/resources/help-center/article/sip-p-asserted-identity-caller-id/): Compare P-Asserted-Identity, From and caller-ID policy on an IllyVoIP SIP trunk, identify conflicting headers, and collect a precise sanitized support case.
- [Trace PRACK and reliable provisional responses on an IllyVoIP SIP call](https://illyvoip.com/resources/help-center/article/sip-prack-troubleshooting/): Trace PRACK and reliable provisional SIP responses on an IllyVoIP call, match RSeq and RAck and collect focused evidence for Support.
- [Troubleshoot SIP REFER transfers with IllyVoIP](https://illyvoip.com/resources/help-center/article/sip-refer-notify-transfer-troubleshooting/): Trace REFER, NOTIFY and the resulting call leg to diagnose an IllyVoIP transfer, distinguishing request acceptance from the final transfer outcome.
- [My SIP phone is registered, but outgoing calls fail](https://illyvoip.com/resources/help-center/article/sip-registered-outgoing-calls-fail/): Find why a registered SIP phone or PBX cannot make outgoing calls. Check dial rules, caller ID, account restrictions, routing, capacity and call reports in order.
- [SIP response codes](https://illyvoip.com/resources/help-center/article/sip-response-codes/): Guide to SIP codes and troubleshooting your calls
- [Check SIP and RTP firewall ports for IllyVoIP](https://illyvoip.com/resources/help-center/article/sip-rtp-firewall-ports/): Check the signaling and media ports used by your IllyVoIP phone or PBX. Build a firewall worksheet from actual endpoints, RTP settings and SIP traces.
- [Sipdroid Android SIP Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/sipdroid-android-sip-setup/): Configure Sipdroid on Android with an IllyVoIP SIP line, verify account registration and calls, then check incoming ringing after idle time.
- [Send IllyVoIP SMS from a Slack command](https://illyvoip.com/resources/help-center/article/slack-command-sms/): Create a private Slack command that queues IllyVoIP SMS for review. Verify signed requests, restrict recipients and prevent duplicate submissions.
- [Check SMS delivery](https://illyvoip.com/resources/help-center/article/sms-delivery-troubleshooting/): Read SMS delivery and charge states separately, distinguish a sending charge from a refund and identify messages awaiting financial review.
- [Send a survey link with IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/sms-survey-link/): Publish a feedback form, send its respondent link through IllyVoIP SMS, prevent duplicate invitations, and separate delivery from survey responses.
- [Add an opt-out link to IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/sms-web-opt-out-suppression/): Build an application-owned SMS preference link, save scoped suppression and check it before future IllyVoIP submissions without claiming native STOP handling.
- [Set up a Snom M500 base and handset](https://illyvoip.com/resources/help-center/article/snom-m500-sip-setup/): Connect a Snom M500 base to IllyVoIP, register a handset and assign its calling account. Troubleshoot pairing and SIP registration separately.
- [Set up Snom PA1 paging through a PBX](https://illyvoip.com/resources/help-center/article/snom-pa1-pbx-paging/): Configure a Snom PA1 as a private PBX paging extension with IllyVoIP. Set its SIP identity and test authorized paging and rejected access.
- [Configure Softphone.Pro with IllyVoIP](https://illyvoip.com/resources/help-center/article/softphone-pro-sip-setup/): Set up Softphone.Pro using your IllyVoIP SIP credentials. Map server and authentication fields, check registration and test incoming and outgoing calls.
- [Turn a caller’s short spoken request into a reviewed support ticket](https://illyvoip.com/resources/help-center/article/spoken-support-request-ticket-illyvoip-voice-api/): Collect a short spoken request with IllyVoIP, confirm the description with the caller and create one support ticket in your own application.
- [Require staff approval before submitting an IllyVoIP SMS batch](https://illyvoip.com/resources/help-center/article/staff-approval-sms-batch-illyvoip-api/): Add an application-owned approval step for an IllyVoIP SMS batch, freeze the reviewed recipients and message, and reconcile partial or uncertain submissions.
- [Submit and follow a number-porting request in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/submit-track-number-porting-illyvoip-app/): Prepare a number-porting request in the IllyVoIP app, review carrier details and attachments, and follow the existing request through completion.
- [Switch an IllyVoIP SIP line to IP authentication](https://illyvoip.com/resources/help-center/article/switch-sip-line-ip-authentication/): Switch an eligible additional IllyVoIP SIP line to a verified public IP address and check the saved authentication state and PBX configuration.
- [Switch an IllyVoIP SIP line from IP authentication back to a password](https://illyvoip.com/resources/help-center/article/switch-sip-line-ip-to-password-illyvoip/): Switch an eligible IllyVoIP SIP line from IP authentication to password authentication and reconfigure the connected endpoint deliberately.
- [Sync CRM contacts into IllyVoIP with the Contacts API](https://illyvoip.com/resources/help-center/article/sync-crm-contacts-api/): Keep a reliable Contacts API checkpoint, include deleted contacts and recover an interrupted synchronization without discarding changes.
- [Review your team’s activity and sessions](https://illyvoip.com/resources/help-center/article/team-activity-guide/): Find recorded team actions, filter by member and outcome, and distinguish activity history from current online presence.
- [Test the IllyVoIP API Sandbox](https://illyvoip.com/resources/help-center/article/test-api-sandbox/): Use separate Sandbox credentials, inspect simulated API responses and failure scenarios, and move your integration to Production deliberately.
- [Test the IllyVoIP API in Postman](https://illyvoip.com/resources/help-center/article/test-illyvoip-api-postman/): Import the IllyVoIP OpenAPI specification into Postman, use Local Vault for your key and begin with a deliberate read-only request.
- [Test your microphone and speaker in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/test-microphone-speaker-illyvoip-app/): Check microphone permission, input level and speaker playback in the IllyVoIP app before diagnosing a calling problem.
- [Test your connection to IllyVoIP](https://illyvoip.com/resources/help-center/article/test-your-connection/): Run IllyVoIP connection checks in the browser or Android app, distinguish interruptions from results, and understand what the test measures.
- [Convert text to speech with the IllyVoIP API and save the audio](https://illyvoip.com/resources/help-center/article/text-to-speech-api-save-audio/): Select current Speech API languages and voice identifiers, keep the matching catalogue context and recover from unavailable TTS selections.
- [Speech-to-Text API: Transcribe Audio Files | IllyVoIP](https://illyvoip.com/resources/help-center/article/transcribe-audio-speech-to-text-api/): Upload an MP3 or WAV file to the IllyVoIP Speech-to-Text API, select a supported language and read the transcript and duration.
- [Transfer an active call from the IllyVoIP mobile app](https://illyvoip.com/resources/help-center/article/transfer-active-call-illyvoip-mobile-app/): Transfer an active IllyVoIP app call to an available team line or an entered number and follow completion, cancellation or uncertain status.
- [Transfer Calls in the IllyVoIP Browser Webphone](https://illyvoip.com/resources/help-center/article/transfer-browser-webphone-call/): Transfer an active IllyVoIP browser-webphone call to an agent or phone number, follow its status and handle cancellation or an uncertain result.
- [Troubleshoot IllyVoIP API authentication and permission errors](https://illyvoip.com/resources/help-center/article/troubleshoot-api-authentication-permissions/): Diagnose IllyVoIP API 401 and 403 responses by checking environment, current credentials, verification and permissions without repeating paid operations.
- [FortiGate SIP Troubleshooting](https://illyvoip.com/resources/help-center/article/troubleshoot-fortigate-sip/): Identify the FortiGate policy, SIP ALG and session-helper behavior affecting an IllyVoIP call, then test one justified change with a rollback plan.
- [OPNsense SIP and VoIP Troubleshooting](https://illyvoip.com/resources/help-center/article/troubleshoot-opnsense-sip/): Trace OPNsense firewall and NAT behavior for an IllyVoIP endpoint, then test a scoped correction without disrupting unrelated connections.
- [Troubleshoot SIP 413 on an IllyVoIP trunk](https://illyvoip.com/resources/help-center/article/troubleshoot-sip-413-illyvoip/): Investigate SIP 413 on an IllyVoIP trunk using the rejected request, its source and a bounded comparison before changing PBX settings.
- [SonicWall SIP Troubleshooting with IllyVoIP](https://illyvoip.com/resources/help-center/article/troubleshoot-sonicwall-sip/): Inspect SonicWall SIP transformations, NAT and the matching policy before testing a targeted change for failing IllyVoIP calls.
- [Turn Off Yealink T54W Do Not Disturb (DND)](https://illyvoip.com/resources/help-center/article/turn-off-yealink-t54w-do-not-disturb/): Disable DND on the correct Yealink T54W line, check ringing and distinguish a local phone setting from an IllyVoIP routing or registration issue.
- [Manage IllyVoIP sign-in, MFA and connected accounts](https://illyvoip.com/resources/help-center/article/two-step-verification/): Manage IllyVoIP passwords, MFA, sessions and connected Google or GitHub sign-in, including removal of the last connected provider.
- [Use the official IllyVoIP Webphone SDK types in a TypeScript dialer](https://illyvoip.com/resources/help-center/article/typescript-official-illyvoip-sdk-types/): Use the IllyVoIP SDK package’s TypeScript declarations for managed options and call objects, with explicit checks for untyped event payloads.
- [Understand IllyVoIP postpaid credit and payments](https://illyvoip.com/resources/help-center/article/understand-postpaid-amount-due-credit-payment/): Read the displayed IllyVoIP postpaid amount due, available credit and payment status without confusing a credit limit with a bill.
- [Understand transactions, refunds and invoices](https://illyvoip.com/resources/help-center/article/understand-transactions-and-invoices/): Read your balance ledger, find charges and refunds, export filtered records and distinguish invoices from usage history.
- [Unpaid-invoice SMS reminders with IllyVoIP](https://illyvoip.com/resources/help-center/article/unpaid-invoice-sms-reminders/): Recheck invoice state before sending an IllyVoIP SMS reminder, skip settled invoices and retain a durable record of each approved attempt.
- [Grandstream GRP2615 Firmware Update with IllyVoIP](https://illyvoip.com/resources/help-center/article/update-grandstream-grp2615-firmware/): Update a Grandstream GRP2615 safely: identify its hardware revision, protect the configuration, follow the right firmware path and recheck IllyVoIP calls.
- [Add or change your login email and phone](https://illyvoip.com/resources/help-center/article/update-login-email-or-phone/): Update account identifiers through verification, distinguish contact information from login details and handle interrupted changes safely.
- [Update profile and company billing details](https://illyvoip.com/resources/help-center/article/update-profile-company-billing-details/): Update IllyVoIP profile, company, address and tax details, understand login-email restrictions and resolve save errors.
- [Update queue settings from the IllyVoIP app without overwriting another change](https://illyvoip.com/resources/help-center/article/update-queue-settings-illyvoip-app-conflict/): Save queue settings from the IllyVoIP app using the current revision and handle a concurrent edit without overwriting another administrator’s change.
- [Yealink T54W Firmware Update with IllyVoIP](https://illyvoip.com/resources/help-center/article/update-yealink-t54w-firmware/): Plan a Yealink T54W firmware update, protect its SIP configuration, check upgrade restrictions and verify IllyVoIP calls after the restart.
- [Upload Waiting Music to an IllyVoIP Call Queue](https://illyvoip.com/resources/help-center/article/upload-call-queue-waiting-music/): Choose, upload and preview waiting music for an IllyVoIP queue. Check the saved audio, incoming route and common upload problems.
- [Use IllyVoIP calling inside your CRM](https://illyvoip.com/resources/help-center/article/use-calling-inside-your-crm/): Prepare HubSpot calling, understand CTI access and separate phone readiness from contact synchronization.
- [Make and manage calls with the browser webphone](https://illyvoip.com/resources/help-center/article/use-the-browser-webphone/): Prepare your audio, place and answer calls, use the keypad and transfer controls, and understand browser-phone takeover.
- [Verify an outgoing caller-ID number in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/verify-caller-id-illyvoip-app/): Request and complete caller-ID verification in the IllyVoIP app, resume a pending verification and distinguish verification from outgoing selection.
- [Verify IllyVoIP Webhooks in Node.js](https://illyvoip.com/resources/help-center/article/verify-webhook-signatures-nodejs/): Verify raw-body webhook signatures in Node.js, enforce a timestamp policy and acknowledge events only after durable receipt and duplicate protection.
- [Transcribe video audio with IllyVoIP](https://illyvoip.com/resources/help-center/article/video-audio-extraction-transcription/): Select a video audio track with FFmpeg, verify a supported MP3 or WAV file, and transcribe that audio with the IllyVoIP API.
- [Set Voice Agent Business Hours and After-Hours Handling](https://illyvoip.com/resources/help-center/article/voice-agent-business-hours-after-hours/): Configure IllyVoIP Voice Agent business hours, verify the account timezone and review the greeting and fallback used outside opening hours.
- [Capture a caller reference and use it in a Voice Agent flow](https://illyvoip.com/resources/help-center/article/voice-agent-capture-reference/): Capture an ordinary caller reference in an IllyVoIP Voice Agent flow, save it to a variable and handle incomplete or incorrect input.
- [Find disconnected or incomplete steps in a Voice Agent flow](https://illyvoip.com/resources/help-center/article/voice-agent-flow-validation/): Find missing destinations and incomplete steps in an IllyVoIP Voice Agent flow, preserve working branches and verify the corrected update.
- [Connect Voice Agent flows, integrations and reports](https://illyvoip.com/resources/help-center/article/voice-agent-flows-and-integrations/): Collect input, branch deliberately, connect an HTTP service and verify transfers and call reports.
- [Route callers by their stated intent in Voice Agent Studio](https://illyvoip.com/resources/help-center/article/voice-agent-intent-routing/): Route callers by spoken intent in IllyVoIP Voice Agent Studio using clear AI route labels, connected destinations and an acceptance checklist.
- [Set up a multilingual IllyVoIP Voice Agent](https://illyvoip.com/resources/help-center/article/voice-agent-multiple-languages/): Choose a main language and additional languages for an IllyVoIP Voice Agent, review written prompts and verify switching and handoffs.
- [Look up a service request from a Voice Agent flow](https://illyvoip.com/resources/help-center/article/voice-agent-service-request-lookup/): Connect an IllyVoIP Voice Agent HTTP step to your service-request lookup, extract minimal JSON fields and handle failure and not-found results.
- [Set a Voice Agent’s speaking style and custom guidance](https://illyvoip.com/resources/help-center/article/voice-agent-speaking-style-guidance/): Choose an IllyVoIP Voice Agent speaking style and concise custom guidance while keeping business facts, scripts and routing in their proper controls.
- [Escalate an unacknowledged service alert with IllyVoIP voice calls](https://illyvoip.com/resources/help-center/article/voice-alert-escalation-illyvoip/): Create a controlled on-call voice escalation workflow using explicit acknowledgement, incident deduplication and reconciliation of uncertain calls.
- [Play Audio Files with the Voice API](https://illyvoip.com/resources/help-center/article/voice-api-audio-file-playback/): Prepare a hosted audio prompt, play it on an active IllyVoIP Voice API call and wait for completion before continuing or hanging up.
- [Handle a Voice API content-review response in your application](https://illyvoip.com/resources/help-center/article/voice-api-content-review-response/): Handle a Voice API content-review refusal, retain its review reference and inspect partial action results before deciding what to do next.
- [Build a Voice API Keypad Menu | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/voice-api-dtmf-phone-menu/): Collect DTMF with IllyVoIP, route Sales and Support selections, and handle no input, invalid choices and transfer outcomes in your application.
- [Execute Voice API actions and add a timed wait](https://illyvoip.com/resources/help-center/article/voice-api-ordered-action-sequence/): Execute ordered IllyVoIP Voice API actions, insert a bounded wait and recover safely without repeating completed actions.
- [Transfer a Voice API Call | IllyVoIP Help](https://illyvoip.com/resources/help-center/article/voice-api-transfer-handle-no-answer/): Track an asynchronous IllyVoIP call transfer, cancel only when permitted, and recover using the actual transfer and original-call states.
- [Play and Stop Waiting Music with the IllyVoIP Voice API](https://illyvoip.com/resources/help-center/article/voice-api-waiting-music-hold-unhold/): Use hold and unhold on an owned Voice API call, manage waiting deadlines and avoid confusing waiting music with call parking or paused billing.
- [Transcribe an IllyVoIP voicemail recording](https://illyvoip.com/resources/help-center/article/voicemail-audio-transcription/): Obtain an authorized IllyVoIP voicemail recording, upload supported audio to Speech-to-Text, and review the transcript without assuming automatic transcription.
- [How to Read and Understand Your VoIP Call Reports (CDR)](https://illyvoip.com/resources/help-center/article/voip-call-reports-cdr/): Find missed calls in Call Reports and understand how viewing visible missed-call rows affects the unread navigation badge.
- [How to Become a Reseller with IllyVoIP](https://illyvoip.com/resources/help-center/article/voip-reseller/): Are you a reseller considering ILLYVOIP? Find out how you can be a resller of ILLYVOIP services.
- [What is VOIP (Voice over Internet Protocol)](https://illyvoip.com/resources/help-center/article/voip/): Voice over Internet Protocol (better known as VoIP) is a technology that allows users to make and receive phone calls over the internet.
- [Add IllyVoIP WebRTC Browser Calling to Vue 3](https://illyvoip.com/resources/help-center/article/vue3-illyvoip-browser-calling/): Build a Vue 3 calling component with the IllyVoIP SDK, server-issued browser tokens, reactive call state and deliberate connection cleanup.
- [Troubleshoot webhook delivery and receiver errors](https://illyvoip.com/resources/help-center/article/webhook-delivery/): Investigate IllyVoIP webhook failures, distinguish log reloads from delivery retries and manage endpoint or secret changes.
- [Create and recover webhook setup in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/webhook-setup-recovery-illyvoip-app/): Create an IllyVoIP webhook from the app, store its signing secret securely and reconcile interrupted creation or rotation before trying again.
- [Build incoming-call Answer and Decline controls with the Webphone SDK](https://illyvoip.com/resources/help-center/article/webphone-sdk-answer-decline/): Build reliable Answer and Decline controls for IllyVoIP SDK incoming calls, including duplicate clicks, caller cancellation and UI cleanup.
- [Attach CRM reference metadata to Webphone SDK SIP requests](https://illyvoip.com/resources/help-center/article/webphone-sdk-custom-sip-headers/): Attach minimal CRM or desk references to IllyVoIP SDK SIP requests, validate header values and verify the receiving integration’s actual behavior.
- [Add mute, hold, resume and keypad controls to an IllyVoIP browser phone](https://illyvoip.com/resources/help-center/article/webphone-sdk-mute-hold-keypad/): Add SDK mute, local hold, resume and keypad controls, with accurate state labels and clear limits on waiting music, billing and DTMF confirmation.
- [Diagnose an IllyVoIP SDK call with preflight checks and WebRTC statistics](https://illyvoip.com/resources/help-center/article/webphone-sdk-preflight-call-statistics/): Run IllyVoIP SDK preflight checks and inspect sanitized call statistics while distinguishing browser permissions, signaling and actual media evidence.
- [Configure regional connection fallback in the IllyVoIP Webphone SDK](https://illyvoip.com/resources/help-center/article/webphone-sdk-regional-fallback/): Configure ordered regions and a region-aware token provider for IllyVoIP SDK connection fallback, with clear limits during an active call.
- [Handle browser-token refresh in a long-running IllyVoIP SDK session](https://illyvoip.com/resources/help-center/article/webphone-sdk-token-refresh/): Handle scheduled and manual IllyVoIP SDK token refresh, deferred application during calls, authorization failures and cleanup in a long-running session.
- [Transfer a call from an application using the Webphone SDK](https://illyvoip.com/resources/help-center/article/webphone-sdk-transfer-call/): Request an IllyVoIP SDK call transfer, prevent duplicate submissions and distinguish transfer signaling from the destination’s actual answer.
- [Use the IllyVoIP browser phone and manage its session](https://illyvoip.com/resources/help-center/article/webphone-troubleshooting/): Use the browser phone, test audio and move an idle browser-phone session to the intended tab without confusing session ownership with routing.
- [IllyVoIP WebRTC SDK Audio Device Selection](https://illyvoip.com/resources/help-center/article/webrtc-sdk-audio-devices/): Use listDevices, setInputDevice and setOutputDevice with clear browser-permission handling and accurate microphone-switching behavior.
- [Send IllyVoIP SMS from a protected website form](https://illyvoip.com/resources/help-center/article/website-form-sms/): Build a protected website form for IllyVoIP SMS with Flask. Keep the API key on the server, review messages and prevent duplicate paid submissions.
- [Check incoming-call alerts in the IllyVoIP Windows app](https://illyvoip.com/resources/help-center/article/windows-illyvoip-incoming-call-alerts/): Check incoming IllyVoIP calls on Windows by separating number routing, app readiness, notification banners and ringtone audio.
- [WooCommerce Order SMS with IllyVoIP](https://illyvoip.com/resources/help-center/article/woocommerce-order-sms/): Connect WooCommerce order events to IllyVoIP SMS with verified webhooks, deliberate status rules, duplicate protection and delivery tracking.
- [WordPress SMS Notifications with IllyVoIP](https://illyvoip.com/resources/help-center/article/wordpress-sms-custom-plugin/): Build a small WordPress SMS plugin for approved staff events, queue notifications outside registration and keep IllyVoIP API credentials server-side.
- [Work through an assigned campaign in the IllyVoIP app](https://illyvoip.com/resources/help-center/article/work-assigned-campaign-illyvoip-app/): Open an assigned IllyVoIP campaign, check line readiness, use Power or Predictive controls and save outcomes before continuing.
- [Send Xero invoice reminders through IllyVoIP SMS](https://illyvoip.com/resources/help-center/article/xero-invoice-sms-reminders/): Send IllyVoIP SMS reminders for eligible Xero invoices using verified webhooks, tenant-scoped invoice reads and duplicate-safe reminder records.
- [Yealink Call Transfers with IllyVoIP](https://illyvoip.com/resources/help-center/article/yealink-call-transfers/): Use blind and attended transfer on a Yealink SIP-T54W, verify the destination and handle failed transfers without assuming the original call will return.
- [Yealink Network Unavailable: IllyVoIP Checks](https://illyvoip.com/resources/help-center/article/yealink-network-unavailable/): Troubleshoot a Yealink Network unavailable message with link, DHCP, gateway and DNS checks before changing your IllyVoIP SIP credentials.
- [Yealink T54W Headset Setup and Troubleshooting](https://illyvoip.com/resources/help-center/article/yealink-t54w-headset/): Connect a compatible headset to a Yealink T54W and check microphone, output and answer/end controls without changing a working IllyVoIP SIP line.
- [Yealink T54W Speed Dial Setup with IllyVoIP](https://illyvoip.com/resources/help-center/article/yealink-t54w-speed-dial/): Program a Yealink T54W speed-dial key for an IllyVoIP call, choose the right SIP account and verify the destination without changing number routing.
- [Check unwanted forwarding on a Yealink T57W](https://illyvoip.com/resources/help-center/article/yealink-t57w-unwanted-call-forwarding/): Inspect always, busy and no-answer forwarding on a Yealink T57W used with IllyVoIP, distinguish server codes, and verify the intended incoming call route.
- [Connect a Yealink W90 DECT system](https://illyvoip.com/resources/help-center/article/yealink-w90-multicell-sip-setup/): Register a Yealink W90 system with IllyVoIP. Connect manager and bases, assign the handset account and check synchronization and calls.
- [Connect Yeastar TA200 to IllyVoIP](https://illyvoip.com/resources/help-center/article/yeastar-ta200-analog-phone-setup/): Connect an analog telephone to a Yeastar TA200 FXS port. Configure IllyVoIP SIP registration, dialing and the incoming number destination.
- [Zabbix SMS Alerts with IllyVoIP](https://illyvoip.com/resources/help-center/article/zabbix-sms-alerts/): Create a custom Zabbix webhook media type for IllyVoIP SMS, map problem and recovery events, protect credentials and avoid unsafe automatic resends.
- [Zoho CRM SMS Workflow with IllyVoIP](https://illyvoip.com/resources/help-center/article/zoho-crm-sms-workflow/): Connect an approved Zoho CRM notification workflow to IllyVoIP SMS using a protected Connection, durable queue and separate delivery status.

## Company and contact
- [About IllyVoIP | IllyVoIP](https://illyvoip.com/company/about-us): From a small call shop in 2006 to a platform for business voice, numbers, messaging and programmable communications. Meet IllyVoIP.
- [Contact Sales & Support | IllyVoIP](https://illyvoip.com/company/contact-us): Contact IllyVoIP for service enquiries, technical support and account questions. Find our phone numbers, WhatsApp and office details.

## Legal and policies
- [Legal Resources | IllyVoIP](https://illyvoip.com/company/legal): Find IllyVoIP terms, privacy and data policies, billing documents, service agreements and company legal information.
- [Abuse and Fraud Policy](https://illyvoip.com/company/legal/abuse-and-fraud-policy/): Read the IllyVoIP Abuse and Fraud Policy, including the published document and company contact information.
- [Acceptable Usage Policy](https://illyvoip.com/company/legal/acceptable-usage-policy/): Read the IllyVoIP Acceptable Usage Policy, including the published document and company contact information.
- [Cookie Policy](https://illyvoip.com/company/legal/cookie-policy/): Read the IllyVoIP Cookie Policy, including the published document and company contact information.
- [Data Retention Policy](https://illyvoip.com/company/legal/data-retention-policy/): Read the IllyVoIP Data Retention Policy, including the published document and company contact information.
- [General](https://illyvoip.com/company/legal/general/): Read the IllyVoIP General, including the published document and company contact information.
- [Impressum](https://illyvoip.com/company/legal/impressum/): Read the IllyVoIP Impressum, including the published document and company contact information.
- [Law enforcement and legal compliance guide](https://illyvoip.com/company/legal/law-enforcement-and-legal-compliance-guide/): Read the IllyVoIP Law enforcement and legal compliance guide, including the published document and company contact information.
- [Privacy Policy](https://illyvoip.com/company/legal/privacy-policy/): Read the IllyVoIP Privacy Policy, including the published document and company contact information.
- [Refund Policy or Billing Terms](https://illyvoip.com/company/legal/refund-policy-or-billing-terms/): Read the IllyVoIP Refund Policy or Billing Terms, including the published document and company contact information.
- [Service Agreement](https://illyvoip.com/company/legal/service-agreement/): Read the IllyVoIP Service Agreement, including the published document and company contact information.
- [Support and Service-Level Agreement (SLA)](https://illyvoip.com/company/legal/support-and-service-level-agreement-sla/): Read the IllyVoIP Support and Service-Level Agreement (SLA), including the published document and company contact information.
- [Terms & Conditions](https://illyvoip.com/company/legal/terms-and-conditions/): Read the IllyVoIP terms and conditions covering account responsibilities, service use, payments and the conditions that apply to your agreement.

## Public offer pages
- [An Australian number. A clear connection to your business. | IllyVoIP](https://illyvoip.com/lp/australia-business-number/): Give customers an Australian business number. Explore localities in your account.
- [Numéro professionnel belge | IllyVoIP](https://illyvoip.com/lp/be-numero-professionnel/): Choisissez un numéro belge pour votre entreprise et gérez vos appels en ligne. Numéros dès 1,26 €/mois. Appels facturés séparément.
- [Belgisch zakelijk telefoonnummer | IllyVoIP](https://illyvoip.com/lp/be-zakelijk-nummer/): Kies een Belgisch zakelijk nummer en beheer inkomende en uitgaande gesprekken online. Nummers vanaf €1,26 per maand. Gesprekskosten apart.
- [Belgian Business Phone Numbers | IllyVoIP | IllyVoIP](https://illyvoip.com/lp/belgian-business-number/): Get a Belgian business phone number from €1.26/month. Use the IllyVoIP app, webphone or SIP. Calling charges are separate.
- [Deutsche Telefonnummer fürs Unternehmen | IllyVoIP](https://illyvoip.com/lp/de-geschaeftsnummer/): Eine lokale Rufnummer für Ihr Unternehmen ab 1,71 € pro Monat. Telefonieren per App, Webphone oder SIP. Gesprächskosten separat.
- [Dutch Business Phone Numbers | IllyVoIP | IllyVoIP](https://illyvoip.com/lp/dutch-business-number/): Get a Dutch business phone number from €1.89/month. Use the IllyVoIP app, webphone or SIP. Calling charges are separate.
- [Las notificaciones de tu aplicación, por SMS. | IllyVoIP](https://illyvoip.com/lp/es-api-sms/): Envía confirmaciones y notificaciones desde tu aplicación con la API SMS de IllyVoIP.
- [Les notifications de votre application, par SMS. | IllyVoIP](https://illyvoip.com/lp/fr-api-sms/): Envoyez des confirmations et notifications depuis votre application avec notre API SMS.
- [German Business Phone Numbers | IllyVoIP | IllyVoIP](https://illyvoip.com/lp/german-business-number/): Get a German business phone number from €1.71/month. Use the IllyVoIP app, webphone or SIP. Calling charges are separate.
- [An Irish contact for your next business conversation. | IllyVoIP](https://illyvoip.com/lp/ireland-business-number/): Explore Irish business numbers on request. Create your account to get started.
- [I messaggi della tua applicazione, via SMS. | IllyVoIP](https://illyvoip.com/lp/it-api-sms/): Invia notifiche e conferme dalla tua applicazione con l’API SMS IllyVoIP.
- [Il tuo centralino. Le tue chiamate. IllyVoIP. | IllyVoIP](https://illyvoip.com/lp/it-trunk-sip/): Collega il tuo centralino compatibile tramite SIP. Crea il tuo account IllyVoIP.
- [Business SMS in Kosovo | IllyVoIP](https://illyvoip.com/lp/kosovo-sms/): Send SMS to Kosovo with your business name. Use the portal or API at the standard rate of €0.044 per segment to Vala and IPKO.
- [Zakelijk telefoonnummer in Nederland | IllyVoIP](https://illyvoip.com/lp/nl-zakelijk-nummer/): Een Nederlands nummer voor uw bedrijf. Vanaf €1,89 per maand, met bellen via app, webtelefoon of SIP. Gesprekskosten apart.
- [Number lookup and HLR API | IllyVoIP](https://illyvoip.com/lp/number-lookup-api/): Add number metadata and supported HLR checks to your communication workflow.
- [Svenskt företagsnummer och samtal | IllyVoIP](https://illyvoip.com/lp/se-foretagsnummer/): Skaffa ett svenskt företagsnummer och hantera samtal online. Lokala nummer från 3,12 €/månad. Samtalsavgifter tillkommer.
- [Swedish Business Phone Numbers | IllyVoIP | IllyVoIP](https://illyvoip.com/lp/swedish-business-number/): Get a Swedish business phone number from €3.12/month. Use the IllyVoIP app, webphone or SIP. Calling charges are separate.
- [Text-to-speech API | IllyVoIP](https://illyvoip.com/lp/text-to-speech-api/): Generate spoken prompts through the API. Return audio in WAV or MP3.
- [Transactional SMS API | IllyVoIP](https://illyvoip.com/lp/transactional-sms-api/): Send application updates and reminders. Follow delivery status with SMS webhooks.
- [UK business phone numbers | IllyVoIP](https://illyvoip.com/lp/uk-business-number/): Find an available UK business number. Review prices and manage call routing online.
- [Outbound SIP for your PBX | IllyVoIP](https://illyvoip.com/lp/wholesale-voice/): Connect your PBX with SIP. Review destination rates and start with your own account.

## Country coverage
- [Country Coverage: Business Voice & Phone Numbers | IllyVoIP](https://illyvoip.com/coverage): Explore IllyVoIP country coverage for business calling, phone numbers, SIP trunks and Voice API. Find the services available for your next market.
- [Afghanistan Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/afghanistan): Explore supported calling to Afghanistan (+93) with IllyVoIP apps, SIP trunks and Voice API. Keep the supply discussion clear.
- [Albania Business Calling, SIP & Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/albania): Call Albania with IllyVoIP apps, SIP trunks and Voice API. Explore Albanian +355 virtual phone numbers on request for a dedicated business contact.
- [Algeria Business Calls, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/algeria): Call supported Algerian landlines and mobiles for orders and customer follow-ups. Use IllyVoIP apps, a compatible SIP system or Voice API.
- [American Samoa Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/american-samoa): Call American Samoa +1 684 for order questions and customer follow-ups. Use IllyVoIP apps, SIP trunks or Voice API for supported business calling.
- [Andorra Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/andorra): Call supported Andorran +376 landlines and mobiles. Explore IllyVoIP apps, SIP trunks and Voice API for customer enquiries and business follow-ups.
- [Angola Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/angola): Reach supported Angolan landlines and mobiles for supplier and customer calls. Explore IllyVoIP apps, SIP trunks and Voice API for +244 destinations.
- [Anguilla Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/anguilla): Call supported Anguilla +1 264 destinations. Connect arrival updates and customer discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Antarctica Coverage Enquiries | IllyVoIP](https://illyvoip.com/coverage/antarctica): Discuss calling requirements for Antarctica. Start with the station contact. Review the specific telephone destination with IllyVoIP.
- [Antigua and Barbuda Business Calls & SIP | IllyVoIP](https://illyvoip.com/coverage/antigua-and-barbuda): Reach supported Antigua and Barbuda +1 268 destinations. Use IllyVoIP apps, SIP trunks and Voice API for reservations and business calls.
- [Argentina Virtual Numbers & Buenos Aires SIP Calling | IllyVoIP](https://illyvoip.com/coverage/argentina): Explore Buenos Aires, Córdoba and other Argentine virtual phone numbers. Connect quotations and customer calls through apps, SIP trunks and Voice API.
- [Armenia SIP Calling & Business Voice API | IllyVoIP](https://illyvoip.com/coverage/armenia): Reach supported Armenian +374 destinations. Connect project and client calls through IllyVoIP apps, SIP trunks and custom Voice API workflows.
- [Aruba Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/aruba): Reach supported Aruba +297 landlines and mobiles. Connect customer consultations and service calls with IllyVoIP apps, SIP trunks and Voice API.
- [Australian Local Phone Numbers & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/australia): Explore Australian virtual phone numbers, including Brisbane options. Connect incoming calls and outbound business voice with apps, SIP and Voice API.
- [Austria Virtual Phone Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/austria): Connect an Austrian business phone number to your team. Explore inbound calling, calls to Austria, SIP trunks, IllyVoIP apps and Voice API.
- [Azerbaijan Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/azerbaijan): Call supported Azerbaijani landlines and mobiles. Coordinate handovers and partner conversations through IllyVoIP apps, SIP trunks and Voice API.
- [Bahamas Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/bahamas): Call supported Bahamian +1 242 destinations. Coordinate arrivals and business conversations with IllyVoIP apps, SIP trunks and Voice API.
- [Bahrain Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/bahrain): Call supported Bahraini landlines and mobiles for client and partner conversations. Explore IllyVoIP apps, SIP trunks and Voice API for +973 calling.
- [Bangladesh SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/bangladesh): Reach supported Bangladesh +880 destinations for supplier and customer calls. Explore IllyVoIP apps, SIP trunks and Voice API for your business.
- [Barbados SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/barbados): Reach supported Barbados +1 246 destinations for planning and customer calls. Explore IllyVoIP apps, SIP trunks and Voice API for your business.
- [Belarus Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/belarus): Explore supported calling to Belarus (+375) with IllyVoIP apps, SIP trunks and Voice API. Clarify the technical requirement.
- [Belgian Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/belgium): Choose a local Belgian phone number, including Brussels options. Connect incoming and outgoing calls with IllyVoIP apps, SIP trunks and Voice API.
- [Belize Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/belize): Reach supported Belize +501 landlines and mobiles for booking and customer calls. Explore IllyVoIP apps, SIP trunks and custom Voice API workflows.
- [Benin Business Calls, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/benin): Connect with supported Benin +229 destinations. Use IllyVoIP apps, SIP trunks and Voice API for distributor discussions and customer callbacks.
- [Bermuda Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/bermuda): Call supported Bermuda +1 441 destinations. Use IllyVoIP apps, SIP trunks and Voice API for client reviews, account questions and business discussions.
- [Bhutan SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/bhutan): Call supported Bhutan +975 landlines and mobiles. Connect customer enquiries and proposal discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Bolivia Virtual Phone Numbers & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/bolivia): Explore Bolivian +591 business numbers and outbound calling. Handle proposals and customer follow-ups through IllyVoIP apps, SIP trunks and Voice API.
- [Bonaire, Sint Eustatius & Saba Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/bonaire-sint-eustatius-saba): Explore supported calling to Bonaire, Sint Eustatius and Saba (+599) with IllyVoIP apps, SIP trunks and Voice API. Name the island. Agree the plan.
- [Bosnia and Herzegovina Business Voice & Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/bosnia-and-herzegovina): Explore +387 virtual numbers on request and business calls to Bosnia and Herzegovina. Connect teams through apps, SIP trunks and Voice API.
- [Botswana Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/botswana): Reach supported Botswana +267 landlines and mobiles. Coordinate service visits and customer calls through IllyVoIP apps, SIP trunks and Voice API.
- [Brazil Virtual Numbers & São Paulo SIP Calling | IllyVoIP](https://illyvoip.com/coverage/brazil): Explore São Paulo, Rio de Janeiro and other Brazilian business numbers. Connect inbound enquiries and outbound voice through apps, SIP and Voice API.
- [British Indian Ocean Territory Coverage Enquiries | IllyVoIP](https://illyvoip.com/coverage/british-indian-ocean-territory): Discuss calling requirements for the British Indian Ocean Territory. Check the Diego Garcia destination. Review the specific telephone destination with IllyVoIP.
- [British Virgin Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/british-virgin-islands): Coordinate British Virgin Islands bookings on +1 284. Use IllyVoIP apps, SIP trunks and Voice API for supported customer and provider calls.
- [Brunei Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/brunei-darussalam): Reach supported Brunei +673 landlines and mobiles for customer reviews and renewal calls. Explore IllyVoIP apps, SIP trunks and Voice API.
- [Business Calls to Bulgaria, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/bulgaria): Call Bulgarian landlines and mobiles with IllyVoIP apps, SIP trunks and Voice API. Connect project handovers, customer callbacks and supplier discussions.
- [Burkina Faso SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/burkina-faso): Call supported Burkina Faso +226 destinations. Use IllyVoIP apps, SIP trunks and Voice API for supplier discussions and customer order updates.
- [Burundi Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/burundi): Reach supported Burundi +257 landlines and mobiles. Connect customer onboarding and service calls with IllyVoIP apps, SIP trunks and Voice API.
- [Cabo Verde Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/cabo-verde): Call supported Cabo Verde (Cape Verde) +238 destinations. Use IllyVoIP apps, SIP trunks and Voice API for booking updates and business conversations.
- [Cambodia Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/cambodia): Coordinate bookings and customer calls to Cambodia. Reach supported +855 landlines and mobiles using IllyVoIP apps, SIP trunks and Voice API.
- [Cameroon Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/cameroon): Call supported Cameroonian landlines and mobiles. Connect proposals and client conversations through IllyVoIP apps, SIP trunks and Voice API.
- [Canadian Virtual Phone Numbers & Two-Way Calling | IllyVoIP](https://illyvoip.com/coverage/canada): Choose a Canadian local business number by province. Make and receive calls using IllyVoIP apps, SIP trunks or programmable Voice API.
- [Cayman Islands Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/cayman-islands): Reach supported Cayman Islands +1 345 destinations. Connect appointment and customer calls with IllyVoIP apps, SIP trunks and Voice API.
- [Central African Republic Business Calls & SIP | IllyVoIP](https://illyvoip.com/coverage/central-african-republic): Reach supported Central African Republic +236 destinations. Connect project and partner calls through IllyVoIP apps, SIP trunks and Voice API.
- [Chad Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/chad): Call supported Chad +235 landlines and mobiles for order and dispatch discussions. Explore IllyVoIP apps, SIP trunks and Voice API for your team.
- [Chile Virtual Numbers, Santiago Calling & SIP | IllyVoIP](https://illyvoip.com/coverage/chile): Explore Santiago and regional Chilean business numbers. Handle service enquiries and callbacks through IllyVoIP apps, SIP trunks and Voice API.
- [China Business Numbers, Shanghai SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/china): Explore Shanghai, Shenzhen and 400 shared-cost number options. Connect Chinese customer and supplier calls through apps, SIP trunks and Voice API.
- [Colombia Virtual Numbers & Bogotá Business Calling | IllyVoIP](https://illyvoip.com/coverage/colombia): Explore Bogotá, Cali and other listed Colombian phone numbers. Handle customer care with IllyVoIP apps, SIP trunks and programmable Voice API.
- [Comoros Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/comoros): Reach supported Comoros +269 landlines and mobiles. Connect reservation enquiries and partner calls with IllyVoIP apps, SIP trunks and Voice API.
- [Congo-Brazzaville Business Calls & SIP | IllyVoIP](https://illyvoip.com/coverage/congo): Call supported Republic of the Congo +242 destinations. Explore IllyVoIP apps, SIP trunks and Voice API for customer service and business calls.
- [Cook Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/cook-islands): Discuss travel arrangements with Cook Islands contacts on +682. Reach supported numbers through IllyVoIP apps, SIP trunks and Voice API.
- [Costa Rica Virtual Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/costa-rica): Explore Costa Rican +506 numbers on request and business voice for booking enquiries. Connect through IllyVoIP apps, SIP trunks and Voice API.
- [Côte d’Ivoire Phone Numbers on Request & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/cote-divoire): Explore Côte d’Ivoire (Ivory Coast) numbers on request and outbound calling. Connect order discussions through apps, SIP trunks and Voice API.
- [Croatian Virtual Numbers & Local Business Calling | IllyVoIP](https://illyvoip.com/coverage/croatia): Explore Zagreb and other Croatian local phone numbers. Connect enquiries and outbound calls through apps, SIP trunks and IllyVoIP Voice API.
- [Cuba Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/cuba): Explore supported calling to Cuba (+53) with IllyVoIP apps, SIP trunks and Voice API. Discuss the arrangement directly.
- [Curaçao Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/curacao): Discuss service needs with Curaçao +599 contacts. Reach supported business destinations using IllyVoIP apps, SIP trunks and Voice API.
- [Cyprus Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/cyprus): Explore Cyprus +357 business phone numbers for bookings and service enquiries. Connect calls through IllyVoIP apps, SIP trunks and Voice API.
- [Czech Virtual Phone Numbers & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/czechia): Explore Prague and regional Czech business numbers. Connect customer calls with IllyVoIP apps, SIP trunks and Voice API in Czechia.
- [DR Congo Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/democratic-republic-of-congo): Reach supported DR Congo (Congo-Kinshasa) +243 destinations. Use IllyVoIP apps, SIP trunks and Voice API for account reviews and customer calls.
- [Danish Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/denmark): Give your business a Danish +45 phone number. Connect customer calls with IllyVoIP apps, SIP trunks, team calling tools and Voice API.
- [Djibouti SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/djibouti): Call supported Djibouti +253 destinations for handovers and partner coordination. Explore IllyVoIP apps, SIP trunks and custom Voice API workflows.
- [Dominica Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/dominica): Call supported Dominica +1 767 destinations. Explore IllyVoIP apps, SIP trunks and Voice API for service-partner discussions and customer calls.
- [Dominican Republic Virtual Numbers & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/dominican-republic): Explore Santo Domingo, Santiago and other Dominican phone-number options. Connect booking enquiries and outbound calls through apps, SIP and Voice API.
- [Ecuador Business Calls, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/ecuador): Reach supported Ecuadorian landlines and mobiles for customer and after-sales calls. Use IllyVoIP apps, SIP trunks or a custom Voice API integration.
- [Business Calls to Egypt, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/egypt): Call Egyptian landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Connect project discussions, supplier calls and customer follow-ups.
- [El Salvador Virtual Numbers & San Salvador Calling | IllyVoIP](https://illyvoip.com/coverage/el-salvador): Explore San Salvador phone-number options and outbound calls to El Salvador. Connect service enquiries through IllyVoIP apps, SIP trunks and Voice API.
- [Equatorial Guinea Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/equatorial-guinea): Reach supported Equatorial Guinea +240 destinations. Connect technical and customer discussions through IllyVoIP apps, SIP trunks and Voice API.
- [Eritrea Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/eritrea): Call Eritrea +291 to clarify specifications and orders. Explore supported business voice through IllyVoIP apps, SIP trunks and Voice API.
- [Estonian National Phone Numbers & Voice API | IllyVoIP](https://illyvoip.com/coverage/estonia): Explore Estonian national virtual numbers and business calling. Connect customers through apps, SIP trunks, Voice API and developer tools.
- [Eswatini Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/eswatini): Reach supported Eswatini (Swaziland) +268 destinations. Use IllyVoIP apps, SIP trunks and Voice API for repeat orders and customer conversations.
- [Ethiopia SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/ethiopia): Reach supported Ethiopia +251 destinations for project and partner calls. Explore IllyVoIP apps, SIP trunks and custom Voice API integrations.
- [Falkland Islands (Malvinas) Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/falkland-islands): Explore supported calling to the Falkland Islands (Malvinas) (+500) with IllyVoIP apps, SIP trunks and Voice API. Agree the order before dispatch.
- [Faroe Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/faroe-islands): Call supported Faroe Islands +298 destinations. Use IllyVoIP apps, SIP trunks and Voice API for supplier questions and business discussions.
- [Fiji Business Calls, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/fiji): Reach supported Fiji +679 landlines and mobiles. Connect service partners and customer conversations with IllyVoIP apps, SIP trunks and Voice API.
- [Finland Virtual Numbers & Helsinki Business Calling | IllyVoIP](https://illyvoip.com/coverage/finland): Explore Helsinki-area Finnish phone numbers and business calling. Connect customer support with IllyVoIP apps, SIP trunks and Voice API.
- [Business Calling to France, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/france): Call French landlines and mobiles with IllyVoIP apps, SIP trunks or Voice API. Explore business voice for France and discuss French virtual phone numbers.
- [French Guiana Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/french-guiana): Call supported French Guiana +594 destinations. Connect service requests and account discussions through IllyVoIP apps, SIP trunks and Voice API.
- [French Polynesia Business Calls & SIP | IllyVoIP](https://illyvoip.com/coverage/french-polynesia): Reach supported French Polynesia +689 destinations. Use IllyVoIP apps, SIP trunks and Voice API for travel enquiries and business calling.
- [Gabon Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/gabon): Coordinate service calls to supported Gabonese landlines and mobiles. Use IllyVoIP apps, SIP trunks and Voice API for business conversations in Gabon.
- [Gambia Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/gambia): Call supported Gambian +220 landlines and mobiles. Connect customer enquiries and service discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Georgia +995 Virtual Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/georgia): Explore Georgian +995 phone numbers and business calling. Connect customer and partner conversations through apps, SIP trunks and Voice API.
- [German Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/germany): Connect with customers in Germany through virtual phone numbers, inbound and outbound business calling, SIP trunks, IllyVoIP apps and Voice API.
- [Ghana Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/ghana): Reach supported Ghanaian landlines and mobiles with IllyVoIP. Give sales and account teams apps, SIP calling and Voice API tools for customer follow-ups.
- [Gibraltar Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/gibraltar): Reach supported Gibraltar +350 landlines and mobiles. Connect commercial enquiries through IllyVoIP apps, SIP trunks and custom Voice API workflows.
- [Greek Virtual Phone Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/greece): Create a Greek business contact with IllyVoIP. Explore virtual numbers, incoming and outbound calling, SIP trunks and Voice API for Greece.
- [Greenland Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/greenland): Reach supported Greenland +299 destinations for projects and handovers. Explore IllyVoIP apps, SIP trunks and Voice API for business calling.
- [Grenada Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/grenada): Reach supported Grenada +1 473 landlines and mobiles. Use IllyVoIP apps, SIP trunks and Voice API for planning, supplier and customer calls.
- [Guadeloupe Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/guadeloupe): Reach supported Guadeloupe +590 landlines and mobiles. Use IllyVoIP apps, SIP trunks and Voice API for booking changes and customer calls.
- [Guam Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/guam): Call Guam +1 671 for service handovers and appointment discussions. Connect supported destinations with IllyVoIP apps, SIP trunks or Voice API.
- [Guatemala Virtual Phone Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/guatemala): Explore Guatemalan +502 business numbers and outbound calling. Connect product questions and order follow-ups with apps, SIP trunks and Voice API.
- [Guinea Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/guinea): Reach supported Guinea-Conakry +224 destinations. Explore IllyVoIP apps, SIP trunks and Voice API for supplier discussions and business calls.
- [Guinea-Bissau Business Calling & SIP | IllyVoIP](https://illyvoip.com/coverage/guinea-bissau): Call supported Guinea-Bissau +245 destinations. Use IllyVoIP apps, SIP trunks and Voice API for service visits, customer updates and partner calls.
- [Guyana Business Calls, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/guyana): Call supported Guyana +592 landlines and mobiles. Connect project partners and client discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Haiti Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/haiti): Call supported Haiti +509 landlines and mobiles. Connect order questions and supplier discussions through IllyVoIP apps, SIP trunks and Voice API.
- [Honduras Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/honduras): Call supported Honduras +504 landlines and mobiles for service follow-ups. Explore IllyVoIP apps, SIP trunks and Voice API for your team.
- [Hong Kong Virtual Phone Numbers, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/hong-kong): Explore Hong Kong +852 business numbers and outbound calls. Connect product enquiries and account follow-ups through apps, SIP trunks and Voice API.
- [Hungarian Phone Numbers & Budapest SIP Calling | IllyVoIP](https://illyvoip.com/coverage/hungary): Explore Budapest and regional Hungarian virtual numbers. Connect client calls through IllyVoIP apps, SIP trunks and programmable voice.
- [Iceland Virtual Numbers, Business Calling & SIP | IllyVoIP](https://illyvoip.com/coverage/iceland): Explore Icelandic +354 phone numbers and business voice for customer enquiries. Connect through IllyVoIP apps, SIP trunks and Voice API.
- [India Toll-Free Numbers, SIP Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/india): Explore Indian toll-free numbers for customer support and outbound calls to India. Connect through IllyVoIP apps, SIP trunks and Voice API.
- [Calls to Indonesia, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/indonesia): Call Indonesian landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Connect order discussions, customer callbacks and partner conversations.
- [Iran Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/iran): Explore supported calling to Iran (+98) with IllyVoIP apps, SIP trunks and Voice API. Clarify the account question.
- [Iraq Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/iraq): Explore supported calling to Iraq (+964) with IllyVoIP apps, SIP trunks and Voice API. Get the installation details right.
- [Ireland Business Calling & Irish Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/ireland): Call Irish landlines and mobiles with IllyVoIP apps, SIP trunks and Voice API. Explore Irish +353 virtual phone numbers on request.
- [Israel Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/israel): Explore Israeli +972 business numbers and outbound voice. Connect product enquiries with IllyVoIP apps, SIP trunks and programmable Voice API.
- [Italian Virtual Phone Numbers & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/italy): Give your business an Italian phone number. Handle incoming calls and reach Italy through IllyVoIP apps, SIP trunks and programmable Voice API.
- [Jamaica Business Calls, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/jamaica): Reach supported Jamaican landlines and mobiles. Coordinate guest and customer calls through IllyVoIP apps, SIP trunks and Voice API.
- [Japan Business Calling, SIP & Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/japan): Call Japan through IllyVoIP apps, SIP trunks and Voice API. Explore Japanese +81 virtual phone number options on request for customer enquiries.
- [Calls to Jordan, Business SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/jordan): Call Jordanian landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Support enquiry follow-ups, proposals and partner conversations.
- [Kazakhstan Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/kazakhstan): Reach supported Kazakhstani landlines and mobiles through IllyVoIP. Connect account and project calls with apps, SIP trunks and Voice API.
- [Kenya Toll-Free Numbers & Business SIP Calling | IllyVoIP](https://illyvoip.com/coverage/kenya): Explore Kenyan toll-free numbers and outbound business calls. Connect service enquiries and customer callbacks through apps, SIP trunks and Voice API.
- [Kiribati Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/kiribati): Reach Kiribati +686 contacts for supply enquiries and partner conversations. Explore supported business calling with apps, SIP trunks and Voice API.
- [Kosovo Business Calling, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/kosovo): Call Kosovo landlines and mobiles through apps, SIP trunks and Voice API. Discuss +383 business-number options and connect customer conversations.
- [Kuwait Business Calls, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/kuwait): Reach supported Kuwait +965 destinations with IllyVoIP. Use apps, SIP trunks and Voice API for quotation discussions and customer follow-ups.
- [Kyrgyzstan Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/kyrgyzstan): Coordinate business calls to supported Kyrgyzstan +996 landlines and mobiles. Explore IllyVoIP apps, SIP trunks and Voice API for your team.
- [Laos Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/laos): Call Laos +856 for delivery coordination and distributor enquiries. Use IllyVoIP apps, a compatible SIP system or Voice API for supported calls.
- [Latvian Virtual Phone Numbers & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/latvia): Explore Latvian business phone numbers and two-way voice. Connect customer enquiries with apps, SIP trunks and programmable Voice API.
- [Lebanon Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/lebanon): Call supported Lebanese landlines and mobiles for customer enquiries and account discussions. Explore IllyVoIP apps, SIP trunks and Voice API.
- [Lesotho Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/lesotho): Reach supported Lesotho +266 landlines and mobiles. Connect customer reviews and account calls with IllyVoIP apps, SIP trunks and Voice API.
- [Liberia Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/liberia): Call supported Liberia +231 destinations. Connect customer support and service follow-ups through IllyVoIP apps, SIP trunks and Voice API.
- [Libya Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/libya): Explore supported calling to Libya (+218) with IllyVoIP apps, SIP trunks and Voice API. Bring the supplier question forward.
- [Liechtenstein SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/liechtenstein): Reach supported Liechtenstein +423 landlines and mobiles. Connect specification reviews and business calls through IllyVoIP SIP trunks, apps and Voice API.
- [Lithuanian Virtual Numbers & Vilnius Business Calling | IllyVoIP](https://illyvoip.com/coverage/lithuania): Explore Vilnius, Kaunas and other Lithuanian business numbers. Connect incoming enquiries and outbound calls with apps, SIP trunks and Voice API.
- [Calls to Luxembourg, Business SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/luxembourg): Reach Luxembourg landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Connect client reviews, proposals and business conversations.
- [Macao Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/macao): Reach Macao (Macau) +853 contacts for venue and supplier discussions. Explore IllyVoIP business calling, SIP trunks, apps and Voice API.
- [Madagascar Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/madagascar): Call supported Madagascar +261 landlines and mobiles. Coordinate bookings and business conversations through IllyVoIP apps, SIP trunks and Voice API.
- [Malawi Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/malawi): Reach supported Malawian landlines and mobiles for customer onboarding and follow-ups. Explore IllyVoIP apps, SIP trunks and Voice API for +265 calls.
- [Malaysia Virtual Numbers, SIP Trunks & Business Voice | IllyVoIP](https://illyvoip.com/coverage/malaysia): Explore Malaysian +60 numbers on request and outbound business calling. Use IllyVoIP apps, SIP trunks or Voice API for sales and service conversations.
- [Maldives Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/maldives): Call supported Maldives +960 destinations for guest enquiries and service discussions. Explore IllyVoIP apps, SIP trunks and Voice API business calling.
- [Mali Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/mali): Reach supported Mali +223 landlines and mobiles. Use IllyVoIP apps, SIP trunks and Voice API for proposals, quotations and client conversations.
- [Malta Virtual Phone Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/malta): Explore Maltese +356 virtual numbers for client enquiries. Use IllyVoIP apps, SIP trunks and Voice API for business calling to Malta.
- [Marshall Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/marshall-islands): Call Marshall Islands +692 contacts to clarify project questions. Use apps, SIP trunks and Voice API for supported business destinations.
- [Martinique Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/martinique): Call supported Martinique +596 destinations. Connect repeat orders and customer reviews with IllyVoIP apps, SIP trunks and Voice API.
- [Mauritania SIP Trunks & Business Calls | IllyVoIP](https://illyvoip.com/coverage/mauritania): Call supported Mauritania +222 destinations for partner and project updates. Explore IllyVoIP apps, SIP trunks and custom Voice API calling.
- [Mauritius Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/mauritius): Call supported Mauritian landlines and mobiles. Give client-facing teams IllyVoIP apps, SIP trunks and Voice API tools for business conversations.
- [Mayotte Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/mayotte): Prepare service visits with Mayotte contacts. Reach supported +262 destinations through IllyVoIP apps, SIP trunks and Voice API.
- [Mexico Virtual Numbers & Mexico City Business Calling | IllyVoIP](https://illyvoip.com/coverage/mexico): Explore Mexico City, Guadalajara and Monterrey phone numbers. Connect sales and service calls through IllyVoIP apps, SIP trunks and Voice API.
- [Micronesia Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/micronesia): Reach supported Micronesian landlines on +691. Discuss office enquiries through IllyVoIP apps, a compatible SIP phone system or Voice API.
- [Moldova Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/moldova): Call supported Moldovan +373 landlines and mobiles. Keep client work connected with IllyVoIP apps, SIP trunks and custom Voice API integrations.
- [Monaco Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/monaco): Reach supported Monaco +377 destinations for client calls and appointment discussions. Use IllyVoIP apps, SIP trunks or a custom Voice API integration.
- [Mongolia SIP Trunks & Business Calling | IllyVoIP](https://illyvoip.com/coverage/mongolia): Reach supported Mongolian +976 destinations with IllyVoIP. Keep project and partner conversations connected through apps, SIP trunks and Voice API.
- [Calls to Montenegro, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/montenegro): Call Montenegrin landlines and mobiles with IllyVoIP apps, SIP trunks and Voice API. Connect appointment details, customer callbacks and service teams.
- [Montserrat Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/montserrat): Call supported Montserrat +1 664 destinations. Connect project reviews and partner updates with IllyVoIP apps, SIP trunks and Voice API.
- [Morocco Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/morocco): Reach supported Moroccan landlines and mobiles. Coordinate bookings and business conversations with IllyVoIP apps, SIP trunks and Voice API.
- [Mozambique Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/mozambique): Connect with supported Mozambique +258 destinations. Use IllyVoIP apps, SIP trunks and Voice API for handovers, supplier calls and customer updates.
- [Myanmar Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/myanmar): Explore supported calling to Myanmar (+95) with IllyVoIP apps, SIP trunks and Voice API. Discuss the order change clearly.
- [Namibia Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/namibia): Reach supported Namibian +264 landlines and mobiles. Connect service consultations and customer follow-ups with IllyVoIP apps, SIP trunks and Voice API.
- [Nauru Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/nauru): Call Nauru +674 for service enquiries and customer callbacks. Explore supported business calling with IllyVoIP apps, SIP trunks and Voice API.
- [Nepal Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/nepal): Coordinate bookings and partner calls to Nepal. Reach supported +977 landlines and mobiles with IllyVoIP apps, SIP trunks and Voice API.
- [Netherlands Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/netherlands): Choose a Dutch local or 085 national phone number. Connect business calls in the Netherlands through IllyVoIP apps, SIP trunks and Voice API.
- [New Caledonia Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/new-caledonia): Discuss repairs and collection with New Caledonia +687 contacts. Reach supported numbers through IllyVoIP apps, SIP trunks and Voice API.
- [New Zealand Virtual Phone Numbers & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/new-zealand): Explore Auckland and other New Zealand business numbers. Make and receive calls through IllyVoIP apps, SIP trunks and programmable Voice API.
- [Nicaragua SIP Trunks & Business Calling | IllyVoIP](https://illyvoip.com/coverage/nicaragua): Reach supported Nicaragua +505 destinations. Use IllyVoIP apps, SIP trunks and Voice API for delivery discussions, order updates and customer calls.
- [Niger Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/niger): Reach Niger +227 contacts for delivery and collection enquiries. Use IllyVoIP apps, SIP trunks and Voice API for supported business calls.
- [Nigeria Phone Numbers on Request & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/nigeria): Explore Nigerian +234 numbers on request and outbound calling. Connect account enquiries through IllyVoIP apps, SIP trunks and Voice API.
- [Niue Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/niue): Talk with Niue +683 contacts about customer and service enquiries. Use IllyVoIP apps, SIP trunks or Voice API for supported business calls.
- [Norfolk Island Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/norfolk-island): Explore supported calling to Norfolk Island (+672) with IllyVoIP apps, SIP trunks and Voice API. Talk through the booking detail.
- [North Korea Coverage Enquiries | IllyVoIP](https://illyvoip.com/coverage/north-korea): Discuss calling requirements for North Korea. Review the intended destination. Review the specific telephone destination with IllyVoIP.
- [North Macedonia Business Calls, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/north-macedonia): Call North Macedonian landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Connect partner discussions, order changes and callbacks.
- [Northern Mariana Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/northern-mariana-islands): Coordinate guest arrangements in the Northern Mariana Islands (+1 670). Reach supported numbers through IllyVoIP apps, SIP trunks and Voice API.
- [Norway Business Voice, SIP & Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/norway): Connect with Norway through outbound business voice, SIP trunks and Voice API. Explore Norwegian virtual phone number options on request.
- [Oman Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/oman): Coordinate service and customer conversations in Oman. Call supported +968 landlines and mobiles using IllyVoIP apps, SIP trunks or Voice API.
- [Pakistan Business Calling, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/pakistan): Call supported Pakistani landlines and mobiles. Coordinate projects and client conversations through IllyVoIP apps, SIP trunks or Voice API.
- [Palau Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/palau): Call Palau +680 to discuss activities and customer requirements. Explore supported voice with IllyVoIP apps, SIP trunks and Voice API.
- [Palestine Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/palestine): Explore supported calling to Palestine (+970) with IllyVoIP apps, SIP trunks and Voice API. Keep the customer request understood.
- [Panama Virtual Numbers, SIP & Business Voice | IllyVoIP](https://illyvoip.com/coverage/panama): Explore Panama +507 phone numbers and business calling for customer and partner coordination. Use IllyVoIP apps, SIP trunks or Voice API.
- [Papua New Guinea Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/papua-new-guinea): Reach Papua New Guinea +675 contacts for site and contractor discussions. Use IllyVoIP apps, SIP trunks and Voice API for supported calls.
- [Paraguay Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/paraguay): Reach supported Paraguayan landlines and mobiles for order discussions. Use IllyVoIP apps, SIP trunks and Voice API for business calls to +595.
- [Peru Virtual Phone Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/peru): Explore Peruvian +51 phone numbers and business calling for service enquiries. Connect through IllyVoIP apps, SIP trunks and Voice API.
- [Philippines Toll-Free Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/philippines): Explore Philippine toll-free numbers for customer support and outbound calling to the Philippines. Connect through IllyVoIP apps, SIP trunks and Voice API.
- [Polish Virtual Phone Numbers & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/poland): Explore Warsaw and other Polish local phone numbers. Connect customer enquiries and outbound calls through IllyVoIP apps, SIP trunks and Voice API.
- [Portugal Virtual Numbers & Business Voice | IllyVoIP](https://illyvoip.com/coverage/portugal): Explore Portuguese phone numbers on request and business calls to Portugal. Use IllyVoIP apps, SIP trunks or Voice API for customer conversations.
- [Puerto Rico Virtual Numbers & San Juan SIP Calling | IllyVoIP](https://illyvoip.com/coverage/puerto-rico): Explore San Juan and other Puerto Rico phone numbers. Connect service enquiries and outbound calls through IllyVoIP apps, SIP trunks and Voice API.
- [Business Calls to Qatar, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/qatar): Call Qatari landlines and mobiles with IllyVoIP apps, SIP trunks and Voice API. Connect project discussions, handovers and partner updates.
- [Réunion Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/reunion): Call Réunion contacts to discuss stock and order changes. Explore supported +262 destinations with IllyVoIP apps, SIP trunks and Voice API.
- [Romanian Virtual Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/romania): Explore Bucharest and regional Romanian phone numbers. Handle incoming enquiries and outbound calls with apps, SIP trunks and Voice API.
- [Russia Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/russia): Explore supported calling to Russia (+7) with IllyVoIP apps, SIP trunks and Voice API. Keep account conversations focused.
- [Rwanda Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/rwanda): Support customer onboarding and follow-ups in Rwanda. Call supported +250 destinations through IllyVoIP apps, SIP trunks and Voice API.
- [Saint Helena, Ascension & Tristan Coverage Enquiries | IllyVoIP](https://illyvoip.com/coverage/saint-helena-ascension-tristan-da-cunha): Discuss calling requirements for Saint Helena, Ascension and Tristan da Cunha. Choose the island before the call. Review the specific telephone destination with IllyVoIP.
- [Saint Kitts and Nevis Business Calls & SIP | IllyVoIP](https://illyvoip.com/coverage/saint-kitts-and-nevis): Reach supported Saint Kitts and Nevis +1 869 destinations. Use IllyVoIP apps, SIP trunks and Voice API for bookings and customer conversations.
- [Saint Lucia Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/saint-lucia): Call supported Saint Lucia +1 758 destinations. Connect guest enquiries and business discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Saint Pierre and Miquelon Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/saint-pierre-and-miquelon): Call Saint Pierre and Miquelon +508 for supply and receiving discussions. Use IllyVoIP apps, SIP trunks and Voice API for supported destinations.
- [Saint Vincent and the Grenadines Business Calls | IllyVoIP](https://illyvoip.com/coverage/saint-vincent-and-the-grenadines): Reach supported Saint Vincent and the Grenadines +1 784 destinations. Explore IllyVoIP apps, SIP trunks and Voice API for business calls.
- [Samoa Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/samoa): Call Samoa +685 for repeat-order discussions and account follow-ups. Connect supported destinations with IllyVoIP apps, SIP trunks and Voice API.
- [San Marino Business Calling & SIP | IllyVoIP](https://illyvoip.com/coverage/san-marino): Call supported San Marino destinations with IllyVoIP apps, SIP trunks and Voice API. Keep order changes and customer conversations connected.
- [São Tomé and Príncipe Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/sao-tome-and-principe): Discuss bookings with São Tomé and Príncipe +239 contacts. Reach supported numbers through IllyVoIP apps, SIP trunks and Voice API.
- [Saudi Arabia Business Calls, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/saudi-arabia): Reach Saudi landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API. Connect sales discussions, account follow-ups and partner calls.
- [Senegal SIP Trunks & Business Calling | IllyVoIP](https://illyvoip.com/coverage/senegal): Keep Senegalese partner and customer conversations connected. Explore supported +221 calling with IllyVoIP apps, SIP trunks and Voice API.
- [Serbia Business Calling & Serbian Virtual Numbers | IllyVoIP](https://illyvoip.com/coverage/serbia): Explore Serbian +381 phone numbers on request, outbound business calling and SIP trunks. Add programmable voice to your customer workflow.
- [Seychelles Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/seychelles): Reach supported Seychelles +248 destinations for service follow-ups and customer calls. Explore IllyVoIP apps, SIP trunks and Voice API.
- [Sierra Leone Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/sierra-leone): Reach supported Sierra Leone +232 destinations. Connect customer follow-ups and service reviews with IllyVoIP apps, SIP trunks and Voice API.
- [Singapore Business Numbers, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/singapore): Explore Singapore +65 business number options and outbound calling. Connect customer enquiries through IllyVoIP apps, SIP trunks and Voice API.
- [Sint Maarten Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/sint-maarten): Explore supported calling to Sint Maarten (+1 721) with IllyVoIP apps, SIP trunks and Voice API. Keep booking conversations connected.
- [Slovak Virtual Phone Numbers & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/slovakia): Explore Bratislava and regional Slovak business numbers. Connect incoming calls and outbound voice through apps, SIP trunks and Voice API.
- [Slovenian Virtual Numbers & Ljubljana Business Calling | IllyVoIP](https://illyvoip.com/coverage/slovenia): Explore Ljubljana and other Slovenian phone numbers. Connect client enquiries with IllyVoIP apps, SIP trunks and Voice API calling.
- [Solomon Islands Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/solomon-islands): Discuss stock and dispatch with Solomon Islands +677 contacts. Use IllyVoIP apps, SIP trunks or Voice API for supported business calling.
- [Somalia Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/somalia): Explore supported calling to Somalia (+252) with IllyVoIP apps, SIP trunks and Voice API. Clarify the receiving arrangement.
- [South Africa Business Numbers, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/south-africa): Explore South African business phone numbers and customer calling. Connect your service team with IllyVoIP apps, SIP trunks and Voice API.
- [South Korea Business Numbers, SIP & Voice API | IllyVoIP](https://illyvoip.com/coverage/south-korea): Explore South Korean +82 numbers on request and outbound business calling. Connect customer and partner conversations through apps, SIP trunks and Voice API.
- [South Sudan Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/south-sudan): Explore supported calling to South Sudan (+211) with IllyVoIP apps, SIP trunks and Voice API. Agree the project responsibility.
- [Spain Business Calling & Virtual Phone Numbers | IllyVoIP](https://illyvoip.com/coverage/spain): Call Spanish landlines and mobiles with IllyVoIP apps, SIP trunks or Voice API. Explore Spanish virtual phone numbers on request for your business.
- [Sri Lanka Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/sri-lanka): Call supported Sri Lankan landlines and mobiles for customer updates and service follow-ups. Explore IllyVoIP apps, SIP trunks and Voice API.
- [Sudan Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/sudan): Explore supported calling to Sudan (+249) with IllyVoIP apps, SIP trunks and Voice API. Keep the service discussion clear.
- [Suriname Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/suriname): Reach supported Suriname +597 destinations for customer reviews and repeat orders. Explore IllyVoIP apps, SIP trunks and Voice API business calling.
- [Swedish Virtual Numbers & Stockholm Business Calling | IllyVoIP](https://illyvoip.com/coverage/sweden): Explore Stockholm and other Swedish local phone numbers. Bring business calling to your team with IllyVoIP apps, SIP trunks and Voice API.
- [Switzerland Business Calling & Swiss Phone Numbers | IllyVoIP](https://illyvoip.com/coverage/switzerland): Reach Swiss customers with business voice, SIP trunks and Voice API. Explore Swiss virtual phone numbers on request and IllyVoIP calling apps.
- [Syria Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/syria): Explore supported calling to Syria (+963) with IllyVoIP apps, SIP trunks and Voice API. Clarify the account’s next step.
- [Taiwan Toll-Free Numbers, SIP Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/taiwan): Explore Taiwan toll-free numbers and outbound business calls. Connect product support and customer callbacks through apps, SIP trunks and Voice API.
- [Tajikistan SIP Trunks & Business Calling | IllyVoIP](https://illyvoip.com/coverage/tajikistan): Call supported Tajikistan +992 landlines and mobiles. Keep project and client discussions connected through IllyVoIP apps, SIP trunks and Voice API.
- [Tanzania Business Voice & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/tanzania): Coordinate with Tanzanian contacts through IllyVoIP. Reach supported +255 landlines and mobiles using business apps, SIP trunks or Voice API.
- [Thailand Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/thailand): Explore Thai +66 numbers for booking and service enquiries. Connect incoming and outbound calls with IllyVoIP apps, SIP trunks and Voice API.
- [Timor-Leste Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/timor-leste): Reach Timor-Leste +670 contacts for project reviews and handovers. Connect supported calls with IllyVoIP apps, SIP trunks and Voice API.
- [Togo Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/togo): Reach supported Togo +228 landlines and mobiles. Connect order updates and customer discussions with IllyVoIP apps, SIP trunks and Voice API.
- [Tokelau Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/tokelau): Explore supported calling to Tokelau (+690) with IllyVoIP apps, SIP trunks and Voice API. Discuss the request with the right contact.
- [Tonga Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/tonga): Call Tonga +676 for appointment changes and service follow-ups. Reach supported destinations through IllyVoIP apps, SIP trunks and Voice API.
- [Trinidad & Tobago Business Calls and SIP | IllyVoIP](https://illyvoip.com/coverage/trinidad-and-tobago): Call supported Trinidad and Tobago landlines and mobiles. Connect partner and customer conversations through IllyVoIP apps, SIP trunks and Voice API.
- [Tunisia SIP Calling & Business Voice API | IllyVoIP](https://illyvoip.com/coverage/tunisia): Keep Tunisian client and project conversations connected. Call supported +216 landlines and mobiles through IllyVoIP apps, SIP trunks and Voice API.
- [Business Calls to Turkey, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/turkey): Connect with contacts in Turkey (Türkiye) through IllyVoIP business calling. Explore apps, SIP trunks and Voice API for supported +90 destinations.
- [Turkmenistan Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/turkmenistan): Call Turkmenistan +993 to discuss proposals and project scope. Connect supported destinations with IllyVoIP apps, SIP trunks and Voice API.
- [Turks and Caicos Business Calls & Voice API | IllyVoIP](https://illyvoip.com/coverage/turks-and-caicos-islands): Reach supported Turks and Caicos +1 649 destinations. Use IllyVoIP apps, SIP trunks and Voice API for guest enquiries and business calling.
- [Tuvalu Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/tuvalu): Clarify orders with Tuvalu +688 business contacts. Explore supported outbound calling through IllyVoIP apps, SIP trunks and Voice API.
- [Uganda Phone Numbers on Request & Business Voice | IllyVoIP](https://illyvoip.com/coverage/uganda): Explore Ugandan +256 numbers on request and outbound business calls. Connect service enquiries through apps, SIP trunks and Voice API.
- [Ukraine Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/ukraine): Explore Ukrainian +380 numbers on request and supported business calling. Connect your team through IllyVoIP apps, SIP trunks and Voice API.
- [UAE Business Calling, SIP Trunks & Voice API | IllyVoIP](https://illyvoip.com/coverage/united-arab-emirates): Call supported UAE landlines and mobiles with IllyVoIP. Connect sales and account conversations through business apps, SIP trunks or Voice API.
- [UK Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/united-kingdom): Give your business a UK phone number. Make and receive calls through IllyVoIP apps, SIP trunks or Voice API, with local, national and freephone options.
- [US Virtual Phone Numbers & Business Calling | IllyVoIP](https://illyvoip.com/coverage/united-states): Connect with US customers through virtual phone numbers, inbound and outbound business calling, IllyVoIP apps, SIP trunks and Voice API.
- [Uruguay Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/uruguay): Call supported Uruguayan +598 landlines and mobiles. Connect consultations and client follow-ups through IllyVoIP apps, SIP trunks and Voice API.
- [US Virgin Islands Toll-Free Options & Business Calls | IllyVoIP](https://illyvoip.com/coverage/us-virgin-islands): Explore US Virgin Islands toll-free options and outbound calling. Connect guest enquiries and service conversations through apps, SIP trunks and Voice API.
- [Uzbekistan Business Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/uzbekistan): Reach supported Uzbekistan +998 destinations. Connect commercial discussions with IllyVoIP apps, SIP trunks and custom Voice API workflows.
- [Vanuatu Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/vanuatu): Call Vanuatu +678 to discuss supplier updates and changing plans. Use apps, SIP trunks or Voice API for supported business destinations.
- [Venezuela Phone Numbers on Request & SIP Calling | IllyVoIP](https://illyvoip.com/coverage/venezuela): Explore Venezuelan +58 numbers on request and outbound calling. Connect customer and account conversations through apps, SIP trunks and Voice API.
- [Vietnam Toll-Free Numbers, SIP Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/vietnam): Explore Vietnamese toll-free numbers and outbound calls to Vietnam. Connect product-support enquiries through IllyVoIP apps, SIP trunks and Voice API.
- [Wallis and Futuna Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/wallis-and-futuna): Call Wallis and Futuna +681 to clarify supplies and service needs. Explore supported calling with IllyVoIP apps, SIP trunks and Voice API.
- [Yemen Calling & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/yemen): Explore supported calling to Yemen (+967) with IllyVoIP apps, SIP trunks and Voice API. Keep the supplier conversation precise.
- [Zambia Business Calls & SIP Trunks | IllyVoIP](https://illyvoip.com/coverage/zambia): Call supported Zambian landlines and mobiles for supplier and account discussions. Explore IllyVoIP apps, SIP trunks and Voice API for +260 calling.
- [Zimbabwe Business Calling & Voice API | IllyVoIP](https://illyvoip.com/coverage/zimbabwe): Reach supported Zimbabwean +263 landlines and mobiles. Connect client reviews and business follow-ups with IllyVoIP apps, SIP trunks and Voice API.

## Blog and dated announcements
- [Blog | IllyVoIP](https://illyvoip.com/blog): Business communications guides, insights and news from IllyVoIP.
- [Big News: Our New Website is Live! | IllyVoIP](https://illyvoip.com/blog/big-news-our-new-website-is-live/): We have launched our brand-new website to improve the way you access information about our services. Whether you need voice solutions, global phone numbers, or
- [Use a Business Phone Number on Your Mobile | IllyVoIP | IllyVoIP](https://illyvoip.com/blog/business-phone-number-on-mobile/): Set up business calls on your iPhone or Android with IllyVoIP. Learn about phone numbers, caller ID, incoming calls and the checks to make before you start.
- [Global DID Numbers in 2025 — The Definitive Buyer’s Guide (Coverage, Compliance by Country, Pricing Models, Porting, and Setup) | IllyVoIP](https://illyvoip.com/blog/did-numbers-buyers-guide-2025/): Summary: Direct Inward Dialing (DID) numbers let customers and partners reach the right person or workflow directly—without IVR hoops. This guide explains what
- [How to Manage Remote Employees Across Countries | IllyVoIP](https://illyvoip.com/blog/how-to-manage-remote-employees-across-countries/): Manage remote employees across countries with clear access, call queues, customer notes and reporting. A practical guide using IllyVoIP’s portal.
- [How to Set Up Your IllyVoIP Account and Start Calling in 5 Minutes Anywhere in the World | IllyVoIP](https://illyvoip.com/blog/how-to-set-up-your-illyvoip-account-and-start-calling-in-5-minutes-anywhere-in-the-world/): Setting up an IllyVoIP account and making your first call is incredibly quick and easy. With our tier 1 direct interconnections, you can enjoy high-quality call
- [IllyVoIP & Bandwidth: Unlocking Global Reach and Reliability for Our Customers | IllyVoIP](https://illyvoip.com/blog/illyvoip-bandwidth-unlocking-global-reach-and-reliability-for-our-customers/): IllyVoIP & Bandwidth: Unlocking Global Reach and Reliability for Our Customers The new partnership between IllyVoIP and Bandwidth brings significant upgrades to
- [IllyVoIP Gains Exclusive Access to Operator Products from Leading Telecom Providers | IllyVoIP](https://illyvoip.com/blog/illyvoip-gains-exclusive-access-to-operator-products-from-leading-telecom-providers/): We’re proud to announce a major development at IllyVoIP. While we’ve long partnered with leading global telecom providers like Tata Communications, Deutsche Tel
- [IllyVoIP Partners with LiveAgent: Elevating Global Communications, Enabling Crypto Payments. | IllyVoIP](https://illyvoip.com/blog/illyvoip-partners-with-liveagent-elevating-global-communications-enabling-crypto-payments/): IllyVoIP Partners with LiveAgent, Simplifying Communications and Enabling Crypto Payments with Bitcoin and USDT. We are excited to announce a landmark partnersh
- [Introducing IllyVoIP V2: Platform, Apps & New Website | IllyVoIP](https://illyvoip.com/blog/introducing-illyvoip-v2/): Explore IllyVoIP V2, our new website, mobile and desktop apps, AI Voice Agents, calling tools and a growing Help Center with practical setup guides.
- [Pay Easily on IllyVoIP With BTC, ETH, BNB, Solana, Doge, TRX, and More | IllyVoIP](https://illyvoip.com/blog/pay-on-illyvoip-with-btc-eth-bnb-solana-doge-trx-and-more/): Pay With Cryptocurrency: Fast, Secure, and Easy! We’re happy to share an update to our payment system at IllyVoIP. You can now top up your account using a wide
- [Platinum Routing Test Completed Successfully: IllyVoIP Voice Termination Services Quality (04.06.2024) | IllyVoIP](https://illyvoip.com/blog/platinum-routing-test-completed-successfully-illyvoip-voice-termination-services-quality-04-06-2024/): As IllyVoIP, we are always happy to provide our customers with the best voice termination services. To ensure the best possible product for our clients, we deci
- [Premium Routing Test Completed Successfully: IllyVoIP Voice Termination Services Quality (07.06.2024) | IllyVoIP](https://illyvoip.com/blog/premium-routing-test-completed-successfully-illyvoip-voice-termination-services-quality-07-06-2024/): At IllyVoIP, our mission is to deliver exceptional voice termination services to our clients. Recently, we conducted a comprehensive test of our Premium package
- [Routing Upgrade at ILLYVOIP | IllyVoIP](https://illyvoip.com/blog/routing-upgrade-at-illyvoip/): Introducing Our New Routing Plans: Premium, Standard, and Wholesale At ILLYVOIP, we’re always looking for ways to make your experience better and easier. We’re
- [SIP Interoperability Troubleshooting Guide: Codecs, DTMF, SIP Headers, and One-Way Audio (15 Common Failures) | IllyVoIP](https://illyvoip.com/blog/sip-interoperability-guide-codecs-dtmf-headers-one-way-audio/): A practical SIP interoperability field guide: isolate signaling vs media, read SDP quickly, prove codec/DTMF behavior in pcaps, and fix one-way audio using repe
- [SIP Trunk Monitoring in Production: ASR, ACD, PDD + 4xx/5xx Alerts | IllyVoIP](https://illyvoip.com/blog/sip-trunk-monitoring-production-asr-acd-pdd-4xx-5xx-alerts/): Availability checks alone won’t catch “degraded” voice. This guide shows enterprise ops teams what to monitor on SIP trunks (ASR, ACD, PDD, 4xx/5xx distribution
- [SIP Trunking Architecture in 2025 — A Practical Engineer’s Guide to Secure, Redundant, High-Quality Voice | IllyVoIP](https://illyvoip.com/blog/sip-trunking-architecture-guide-2025/): SIP Trunking Architecture in 2025 — A Practical Engineer’s Guide to Secure, Redundant, High-Quality Voice Summary: SIP trunking remains the backbone of modern e
- [Skype’s Closing: Keep Your Communications Seamless with IllyVoIP | IllyVoIP](https://illyvoip.com/blog/skypes-closing-keep-your-communications-seamless-with-illyvoip/): Move to ILLYVOIP: A Smooth Alternative to Skype As Skype is closing down, it's time to find a reliable replacement. ILLYVOIP offers clear voice calls, easy-to-u
- [The Hidden Cost of Bad Call Quality - And How AI Routing Changes Everything | IllyVoIP](https://illyvoip.com/blog/the-hidden-cost-of-bad-call-quality-and-how-ai-routing-changes-everything/): Why poor connections cost more than you think, and how smart routing is changing the game for businesses everywhere. When most people think about the cost of ph
- [The New Main Package — Your Tier 1 Connection to Global VoIP Excellence | IllyVoIP](https://illyvoip.com/blog/the-new-main-package-your-tier-1-connection-to-global-voip-excellence/): Introducing Our New Main Package We’re excited to announce the launch of our all-new Main Package, offering the highest levels of reliability and clarity for yo
- [Mastering VoIP 101: A Comprehensive Guide to Understand the Power of Voice Over Internet Protocol | IllyVoIP](https://illyvoip.com/blog/understanding-the-basics-of-voip/): Introduction Voice Over the Internet Protocol, famously recognized as "VoIP," came with transformational changes to how human communication was done. The times
- [Up to 100 local telco's and sip providers join ILLYVOIP network. | IllyVoIP](https://illyvoip.com/blog/up-to-100-local-telcos-and-sip-providers-join-illyvoip-network/): We are pleased to bring the newest update in the journey of ILLYVOIP.com. A massive expansion of our network has been made possible through partnerships with as
- [Using IllyVoIP for Global VoIP Termination: One Account, Crypto Payments, Worldwide Connectivity | IllyVoIP](https://illyvoip.com/blog/using-illyvoip-for-global-voip-termination-one-account-crypto-payments-worldwide-connectivity/): Introduction: In today’s interconnected world, seamless communication is the backbone of business success. IllyVoIP emerges as a revolutionary force in the tele
- [Using IllyVoIP for Healthcare Communication and Critical Missions | IllyVoIP](https://illyvoip.com/blog/using-illyvoip-for-healthcare-communication-and-critical-missions/): In the fast-paced world of healthcare, effective communication is not just a convenience—it's a necessity. With lives at stake, healthcare providers require rel

## Careers
- [Careers at IllyVoIP | IllyVoIP](https://illyvoip.com/company/careers): Explore published IllyVoIP roles in engineering, software development, marketing, sales and support.
- [Digital Marketing Specialist](https://illyvoip.com/company/careers/job/digital-marketing-specialist/): Manage campaigns across Google Ads, Meta Ads and other marketing platforms.
- [Sales Account Manager (VoIP)](https://illyvoip.com/company/careers/job/sales-account-manager-voip/): Own the sales cycle for SIP trunks, DIDs, and hosted PBX—grow and retain accounts across global markets.
- [Software Engineer (Full Stack)](https://illyvoip.com/company/careers/job/software-engineer-full-stack/): Explore the Full Stack Software Engineer role at IllyVoIP: web applications, VoIP integrations, responsibilities, qualifications and how to apply.
- [Support Agent — Remote | IllyVoIP](https://illyvoip.com/company/careers/job/support-agent/): Explore the remote Support Agent opportunity at IllyVoIP, including responsibilities, requirements and how to apply.
- [VoIP Specialist](https://illyvoip.com/company/careers/job/voip-specialist/): Design, secure, and optimize complex VoIP infrastructures while leading critical telecom projects.
- [Support Agent — Pristina | IllyVoIP](https://illyvoip.com/company/careers/job/voip-support-agent-1111/): Explore the pristina Support Agent opportunity at IllyVoIP, including responsibilities, requirements and how to apply.

## Developer reference
- [API Documentation](https://illyvoip.com/docs/)