http://www.openser.org/

netkiller@shenzhen:~$ apt-cache search openser
openser - very fast and configurable SIP proxy
openser-cpl-module - CPL module (CPL interpreter engine) for OpenSER
openser-dbg - very fast and configurable SIP proxy [debug symbols]
openser-jabber-module - Jabber module (SIP-Jabber message translation) for OpenSER
openser-mysql-module - MySQL database connectivity module for OpenSER
openser-postgres-module - PostgreSQL database connectivity module for OpenSER
openser-radius-modules - radius modules for OpenSER
openser-unixodbc-module - unixODBC database connectivity module for OpenSER