FreeSWITCH and Asterisk

• Wikipedia says FreeSWITCH is free and open-source telephony software for audio, video, and text, with SIP features, and that it runs on Linux, Windows, macOS, and FreeBSD.
• The article says the latest release is version 1.10, and that SignalWire was founded in 2018 to provide commercial services on an elastic FreeSWITCH core.
• The FreeSWITCH manual that opened says it covers XML configuration, the user directory, SIP profiles, the dialplan, codecs, WebRTC, and integration interfaces.
• Asterisk is the software PBX already cited, and its docs navigation lists Asterisk 18 through 24.
• Asterisk's article says users extend it with dialplan, modules, or AGI programs.

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