Kamailio

From SubmitYourSIP

Kamailio (formerly OpenSER) is a high performance SIP server forked from SER. Because of their shared lineage Kamailio, SER, and OpenSIPS have similar functionality and configuration.

Major features:

• Can be a proxy, registrar, or redirect server
• UDP, TCP, and TLS support
• Supports IPv4 and IPv6
• Support for various DB backends
• Powerful programming features - AVPs, psuedo-variables, etc
• High performance