libsofia-sip-ua-glib-dev - 1.12.11+20110422.1-2.1+b1 main

Sofia-SIP is an open-source SIP User-Agent library, compliant
with the IETF RFC3261 specification. It can be used as
a building block for SIP client software for uses such as VoIP,
IM, and many other real-time and person-to-person communication
services.
.
This package provides the headers and libraries needed to build
applications against the glib/object interfaces of Sofia-SIP library.