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 on different devices
Customer Logo Philips
Customer Logo Aircall
Customer Logo Talkdesk
Customer Logo Replicant

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.


SIP trunking features, built for power users

Feature-rich voice to deliver mission-critical communications.

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    Voice call recording

    Easily enable automatic call recording by number or connection, with configurable formats and cloud storage.

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    Custom voice routing

    Choose a routing scheme per number for ultimate quality, lowest cost or specialized traffic types.

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    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.

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    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.

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    Alerting and reporting

    Set custom alerts for account balance, automatic top-up, call statistics and fraudulent or suspicious activity.

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    Automate with APIs

    Developer-friendly APIs enable you to automate SIP trunk creation in response to demand, so you never run out of capacity.


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.


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

BYOC: Bring Telnyx as Your Carrier

Easily plug and play with your existing communications platform by following our step-by-step guides to get up and running in minutes.


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.


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"}' \
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    SIP 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.

  • Icon Resources EBook

    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.

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    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.

See our SIP trunking pricing

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:


Per minute

Build what you need with flexible voice

Customers save up to 98% of their original telephony bill by switching to Telnyx.
Customer Quote Wille Howe Technology

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.