minisip
2008-11-25: Project appear abandoned – last activity in June 2006
minisip is a SIP soft phone for Linux, Windows XP and soon Windows Mobile 2003 SE that implements additional security features such as mutual authentication, encryption and integrity of on-going calls, and encryption of the signaling (SIP over TLS). These security features use work-in-progress IETF standards (SRTP and MIKEY).
Minisip is opensource and includes libraries for a SIP protocol stack, etc.
From website:
Minisip is a SIP User Agent (“Internet telephone”) developed at KTH currently running on Linux. Keywords: Secure VoIP; SIP; MIKEY; RTP; SRTP; SDP; Video Telephony; Push-to-talk.
Minisip is developed by Ph.D and Master students at the Royal Institute of Technology, KTH, Stockholm, Sweden.
The source code is available as a number of libraries and applications under the GNU General Public Licence (GPL).
December 2, 2021
Phone System 