Asterisk
asterisk.org ↗Easy to use but advanced IP PBX system, VoIP gateway and conference server. (Source Code) GPL-2.0 C/deb
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Easy to use but advanced IP PBX system, VoIP gateway and conference server. (Source Code) GPL-2.0 C/deb
This entry links to an external website rather than a GitHub repository, so there's no README to display here.