UC LabFree University

T11

Open telephony bridges

SIP trunks, Asterisk, FreeSWITCH, and WebRTC

Cheat sheetMarkdown

Sources and go deeper

Opened 2026-10. A row marked confirm has no link, because that page was not verified.

sources.json Markdown

A SIP trunk is a peer, not a brand

Wikipedia's SIP trunking article describes a SIP service between a provider and a customer's SIP PBX.

Asterisk and FreeSWITCH as the other PBX

Wikipedia describes Asterisk as a software PBX that connects phones, the PSTN, and VoIP endpoints.

WebRTC, SIP over WebSocket, and a hosted bridge

Wikipedia describes WebRTC as browser and mobile APIs for real-time audio and video without a plugin.

Sources and go deeper

Opened 2026-10. A row marked confirm has no link, because that page was not verified.

sources.json Markdown