OpenSIPS
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Kamailio, formerly OpenSER, is an SIP server licensed under the GPL-2.0-or-later license. It can be configured to act as a SIP registrar, proxy or redirect server, and features presence support, RADIUS ... Wikipedia
Initial release: September 2002; 21 years ago
License: GPL-2.0-or-later
Stable release: 5.8.1 / 3 April 2024; 20 days ago
Written in: C