SIPit 27
 

The SIPit, or Session Initiation Protocol Interoperability Test, is a weeklong event where people bring their SIP implementations to ensure they work together.
SIPit has been organized by the SIP Forum for over ten years, contributing to greater interoperability between SIP implementations and improvements of the IETF SIP specifications.
Each SIPit is open to anyone with a working SIP implementation. The goal of the events is to refine both the protocol and its implementations.
SIPit is a driving force shaping SIP into a globally interoperable protocol for real time Internet communication services.