Bring your own carrier trunking # Connect your existing PSTN carrier to Twilio’s programmable platform. [ Start for free ](https://www.twilio.com/try-twilio) ![Woman in glasses looks intently at monitor, viewing telecommunications trunk terminations on screen.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_hero_twilio.png/_jcr_content/renditions/compressed-original.webp) ![Woman in glasses looks intently at monitor, viewing telecommunications trunk terminations on screen.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_hero_twilio.png/_jcr_content/renditions/compressed-original.webp) ## 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. ![Chart showing a PSTN carrier connected to voice management options like SIP domains and BYOC trunks.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_connect-carrier_twilio.png/_jcr_content/renditions/compressed-original.webp) ![Chart showing a PSTN carrier connected to voice management options like SIP domains and BYOC trunks.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_connect-carrier_twilio.png/_jcr_content/renditions/compressed-original.webp) ### 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](https://www.twilio.com/en-us/voice) or [SIP Trunking](https://www.twilio.com/en-us/sip-trunking). ### 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. ![Flowchart depicting Twilio App connecting to PSTN Carrier, leading to Voice and SIP Trunking, with a person at the bottom.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_build-apps_twilio.png/_jcr_content/renditions/compressed-original.webp) ![Flowchart depicting Twilio App connecting to PSTN Carrier, leading to Voice and SIP Trunking, with a person at the bottom.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_build-apps_twilio.png/_jcr_content/renditions/compressed-original.webp) ![Man in a blue sweater sitting and talking on the phone, with a red network symbol beside him.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_super-network_twilio.png/_jcr_content/renditions/compressed-original.webp) ![Man in a blue sweater sitting and talking on the phone, with a red network symbol beside him.](https://www.twilio.com/content/dam/twilio-com/global/en/products/voice/byoc-trunking/byoc-trunking_super-network_twilio.png/_jcr_content/renditions/compressed-original.webp) ### 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. ## The Twilio Difference When you bring your carrier to Twilio, you gain discrete control over how you operate your connectivity infrastructure. * Scale size symbol 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. * Satellite 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. * Chat Bubble Level up your contact center with Twilio Flex Use the same platform you know for voice, SMS, video, chat, two-factor authentication, and more. 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