Bring your own carrier trunking

Connect your existing PSTN carrier to Twilio’s programmable platform.

Bring your own carrier trunking with Twilio

Unlock the power of programmability

Twilio lets you control your voice connectivity, build new capabilities, and deploy into new markets on a flexible API‑powered platform.

Connect your carrier without the hassle

Instead of waiting on porting requests, or clearing new regulatory compliance hurdles, you can connect an existing PSTN carrier to Twilio using a BYOC trunk and keep your carrier, and your phone number inventory when building with Voice or SIP Trunking.

Connect an existing PSTN carrier to Twilio using a BYOC trunk
Build carrier-agnostic applications with Twilio

Build carrier-agnostic applications

Leverage use‑case specific APIs to build applications that can control call routing intelligently, build IVRs, or record calls. Direct those applications to solve problems anywhere, regardless of your PSTN carrier.

Rely on the Twilio Super Network

Use Twilio’s Super Network, a global ecosystem of Tier 1 carriers, as a fallback if your carriers encounter an issue or outage. Twilio will ensure your mission critical communications stay up and running.

Twilio's Super Network ensures your mission critical communications stay up and running

The Twilio Difference

When you bring your carrier to Twilio, you gain discrete control over how you operate your connectivity infrastructure.

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Start small, scale endlessly

Using Twilio, you have control of your journey. Start by bringing a sample of your carrier’s voice traffic to Twilio. Scale the percentage of traffic you route to Twilio as you experiment and develop new use cases iteratively.


Expand and control your global reach

Deploy in 100+ locales with a few clicks. Twilio gives you the power to expand your reach in an instant, to supplement your existing PSTN carrier’s coverage.

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Level up your contact center with Twilio Flex

Flex is the first fully‑programmable contact center platform. Now, you can build a custom contact center to support your unique business needs, without breaking your carrier contract. Flex lets you design the contact center you’ve always wanted.