SIP Trunking
Build your global VoIP system on a private network in minutes with Telnyx's Elastic SIP Trunking services.
Get started in the portal
SIP trunking for instant, unlimited global scale
SIP trunking allows businesses to operate a phone system over the internet instead of over physical copper lines and on-premise solutions. Telnyx SIP Trunking allows businesses to be flexible in how they manage their telephony and provides enhanced voice quality over the PSTN. What’s more, we bill our customers by usage—not per seat, saving businesses money up front.
Elastic SIP trunking features, built for power users
Feature-rich voice to deliver mission-critical communications.
Voice call recording
Easily enable automatic call recording by number or connection, with configurable formats and cloud storage.
Custom voice routing
Choose a routing scheme per number for ultimate quality, lowest cost or specialized traffic types.
Emergency calling
Add an address to your account for in-plan calls to E911 numbers and automated routing to the nearest PSAP for complete compliance with Kari’s Law and the Ray Baum Act.
Detailed debugging
We built debugging tools into our portal so you can troubleshoot your calls with full visibility, without having to reach out to support.
Alerting and reporting
Set custom alerts for account balance, automatic top-up, call statistics and fraudulent or suspicious activity.
Automate with APIs
Developer-friendly APIs enable you to automate SIP trunk creation in response to demand, so you never run out of capacity.
Benefits
Control as you scale
Telnyx gives you more control than any other SIP trunking provider. Add or remove SIP trunks in just a few clicks in the portal or on-demand via API.
5
Minutes to get up and running
Crystal clear conversations
HD Voice for PSTN calls compatible with top US carriers, including Verizon, AT&T, US Cellular, and T-Mobile, is tailored for more natural and immersive conversations.
HD Voice
For engaging conversations
Bring your own carrier
Easily plug and play with your existing communications platform by following our step-by-step guides to get up and running in minutes.
10+
Bring your own carrier guides
Always-on support
Most providers put phone support behind a paywall. Telnyx SIP support is available around the clock—for every customer—so your questions never have to wait until Monday.
24/7
Award-winning support
Start building
Setup SIP connections in minutes.
curl -X POST \
--header "Content-Type: application/json" \
--header "Accept: application/json" \
--header "Authorization: Bearer YOUR_API_KEY" \
--data '{"connection_name": "Test Connection", "user_name": "MyUser", "password":"my123secure456password789"}' \
https://api.telnyx.com/v2/credential_connectionsSIP trunk setup
Get started with SIP connections and outbound voice profiles in the portal. Configure your connections as needed and start making and receiving calls globally in minutes.
Telnyx named Cloud Communications Platform Leader
Crowd-sourced review platform G2 Crowd rates Telnyx as a Leader in the Cloud Communication Platform category, above Twilio, Bandwidth and Plivo.
How to switch from the PSTN to VoIP
Future-proof your business communications by switching from the PSTN to cloud communications in 6 easy steps.
Telnyx customers only pay for what they use, and typically save 30% over other CPaaS providers. Lower list pricing and automatic volume discounts are built in as you scale.
Starting at:
$0.0035
Per minuteBuild what you need with flexible voice
Customers save up to 98% of their original telephony bill by switching to Telnyx.
Willie Howe
Business Owner
SIP trunking, put simply, is a means of operating phone systems over the internet, instead of using a traditional phone line. Learn more about how SIP trunking can transform your business communications on our Resource Center.