SIP Support for INCA-IP

Firmix implemented SIP support (Session Initiation Protocol) for the VoIP Intercom II product of Oregano Systems. In addition to the H.323 signalling support of the VoIP Intercom II board, Firmix added SIP support, so Oregano's customers can utilize both signalling protocols in their applications.

To ease intergration, a high-level call control API was implemented to transparently handle calls (both H.323 and SIP).

After evaluation of several open source SIP libraries, we decided to use the Sofia-SIP stack from Nokia for the INCA-IP (MIPS architecture) based boards.