OpenSIPS is an Open Source SIP proxy/server for voice, video, IM, presence and any other SIP extensions.
OpenSIPS is a multi-functional, multi-purpose signaling SIP server used by carriers, telecoms or ITSPs for solutions like Class4/5 Residential Platforms, Trunking / Wholesale, Enterprise / Virtual PBX Solutions, Session Border Controllers, Application Servers, Front-End Load Balancers, IMS Platforms, Call Centers, and many others.
OpenSIPS is recommended for any kind of SIP scenario / service by:
* high throughput – tens of thousands of CPS, millions of simultaneous calls
* flexibility of routing and integration – routing script for implementing custom routing logics, several interfacing APIs
* effective application building – more than 120 modules to provide features, for SIP handling, for backend operations, for integration, for routing logics