ser or SIP Express Router is a very fast and flexible SIP (RFC3621) proxy server. Written entirely in C, ser can handle thousands calls per second even on low-budget hardware. C Shell like scripting language provides full control over the server's behaviour. It's modular architecture allows only required functionality to be loaded. Currently the following modules are available: Digest Authentication, CPL scripts, Instant Messaging, MySQL support, Presence Agent, Radius Authentication, Record Routing, SMS Gateway, Jabber Gateway, Transaction Module, Registrar and User Location. WWW: http://www.iptel.org/ser/ - Andrei Pelinescu-Onciul pelinescu-onciul@fokus.gmd.de