A familiar US contact
Give customers a US phone number to save, share and call. Build a business contact that works with your chosen calling tools.
Business communications in the United States
Your US number.
Open for business.
Make it easy for US customers to reach you—and keep the conversation going with outbound business calls. Bring your number, your team and your calling tools together with IllyVoIP.
Inbound & outbound voice · Apps · SIP · Voice API
United States+1A US number. A world of conversations.
Connect with customers in the United States
A US business presence.
Built around your team.
Whether you are opening a new customer contact or supporting an established business, a US phone number gives people a clear way to reach you. Answer inquiries and make the calls that move your business forward.
- US phone numbers
- Your business contact
- Inbound & outbound voice
- Inquiries, sales & follow-ups
- Apps & webphone
- Desktop, mobile & browser
- SIP trunks
- Your existing phone system
- Voice API
- Calling in your application
US virtual phone numbers
Your business number.
The start of a conversation.
A US virtual phone number, also called a DID, connects incoming callers with your business. Pair that contact with outbound voice for sales conversations, customer callbacks and everyday team communication.
Be there for inquiries
Bring incoming calls to your team’s calling setup. Create a clear path from a customer’s first call to the people who can help.
Keep business moving
Reach US customers, return calls and follow up on opportunities with business voice for your team.
US business calling & SIP trunks
Answer customers.
Start new conversations.
Bring inbound and outbound US calling into the same business workflow. Handle customer inquiries, call back after a missed conversation and give your sales team a way to stay in touch.
Use IllyVoIP apps or connect a compatible PBX and SIP phone system. SIP trunks and voice termination let you build around the calling tools your business already uses.
Be there when they call
US customers→Your team
Start the next conversation
Your team→US destinations
Incoming inquiries. Outgoing opportunities.
Voice API for US calling
A US voice connection.
Your application’s logic.
Build calling into your product with the Voice API. Create guided incoming-call experiences, connect supported outbound calls and use webhooks to bring call events into your application. Shape the conversation with greetings, caller input and transfers.
Explore the Voice APIYour customerYour application
Voice API
GreetListenConnect
A call flow built around your business
Made for the way you work
The right tools.
For every conversation.
Support customers, keep your team connected and build more into your business calling.
Business across locations
Keep your US customer contact consistent while your team works with IllyVoIP for Windows, iOS and Android, or the browser webphone.
Explore the appsCustomer service that connects
Route inquiries through queues and agent workspaces. Use voicemail to give callers another way to leave an inquiry.
Explore contact centerSales calls with visibility
Support outreach and callbacks with call reports and outbound controls. Set country, prefix and maximum-rate rules to fit your calling needs.
Explore business voiceMake more possible with AI voice agents.
Build automated conversations into your customer experience, alongside the tools your team uses every day.
US business calling
A few things
worth knowing.
What is a US virtual business phone number?
It is a public US phone number that connects incoming calls to your business calling setup. A virtual number lets you choose how your team handles the conversation.
Does IllyVoIP support inbound and outbound US calling?
Yes. Use your US number for incoming customer calls and outbound voice to reach supported US destinations for sales, service and everyday business communication.
Can I use IllyVoIP apps for business calls?
Yes. IllyVoIP apps are available for Windows, iOS and Android, alongside the browser webphone. Use them with your business calling service.
Can I connect my existing SIP phone system?
Yes. Connect a compatible PBX or SIP phone system to IllyVoIP and keep the tools your team already uses.
Can I build a custom US calling workflow?
Use the Voice API to build call flows with greetings, input collection, transfers and webhooks. Incoming API workflows use eligible numbers; outbound calls use supported destinations.
Start with IllyVoIP
Your next US customer.
One conversation closer.
Create your account and explore the services that fit your business.