Bring Your Own Numbers with Twilio SIP Interfaces

You can leverage Twilio's Voice API with SIP Interfaces to utilize numbers from another carrier, ideal for conferencing services, IVR, or routing calls to WebRTC. To set up this configuration, configure the Twilio side by adding an IP allow list or username and password, then create a Twilio SIP domain and connect it to Toll Free Forwarding's account, which can be done by selecting a local number from another carrier and setting up call forwarding with a specific "To" address. Once set up, you can send calls through Twilio SIP Interfaces to various devices such as PBXes, softphones, or WebRTC clients.

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