Siproxd

Siproxd is a free SIP proxy. It can be used as a proxy for SIP-clients such as Linphone and Ekiga and other SIP devices conencted to a LAN or WAN.

See also

• OpenH323 Gatekeeper http://www.gnugk.org/
• Partysip http://savannah.nongnu.org/projects/partysip/