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Upcoming SIPit Events

The SIP Forum’s SIPit 32 was held at the University of New Hampshire Interoperability Laboratory September 12-16, 2016.

In addition to the usual thorough testing, this event focused on new evolutions in SIP Security such as the mechanisms defined in the STIR working group. We informed the new SIPBRANDY effort in the IETF.

Once a year, organizations bring a wide range of implementations to the SIPit for a week of testing to refine both the specification and implementation of the world’s next communication infrastructure.

The purpose of the SIPit event is to test for interoperability of SIP implementations, to determine the source of incompatibilities, inform new standards work, and drive refinement of the specifications. This event is open only to implementers with working SIP implementations. It is not a trade show, public demonstration, conference or workshop. The individual results of the event are kept confidential.

View the results from SIPit 32.

For more information about the SIPit events, please visit In addition, summaries of the aspects of the protocol tested at past SIPit events are available at

SIPit 31 was held in Nice, France on September 29 – October 3, 2014, and was hosted by ETSI. View the results from SIPit 31.

SIPit 30 – was held in Raleigh-Durham, North Carolina, February 18-22 2013, and was hosted by Cisco Systems. View the results from SIPit 30.

SIPit 29 – the 29th iteration of the premier International test event for real-time IP communications using the Session Initiation Protocol – was hosted by ETSI in Monte Carlo, Monaco, 24-28 October, 2011. The advanced testing sessions at the SIPit 29 focused on appropriate handling of early media from more than one source, advanced multimedia sessions, secure media, and resilient operation in the presence of NATs and firewalls. View he results from SIPit 29.

SIPit 28 was hosted by Digium on April 11–15, 2011 and held at the Jackson Center in Huntsville, Alabama’s Research Park. A special social event on April 12, 2011 included private admission to the US Space and Rocket Center Museum and a dinner buffet and bar under a real Saturn V rocket at the Davidson Center! View the results from SIPit 28.

SIPit 27 was held in Taipei, Taiwan on November 15th to 19th, 2010, and was hosted by ETSI’s Centre for Testing and Interoperability and ITRI, the Industrial Technology Research Institute.

SIPit 26 was held in Kista – the telecom valley outside Stockholm, Sweden – on May 17-21, 2010 and was hosted by Edvina and Tandberg and sponsored by Ingate, Intertex and .se.

SIPit 25 was held at the University of New Hampshire Interoperability Laboratory (UNH-IOL) in Durham, New Hampshire, on September 14-18, 2009.

SIPit 24 was hosted by the Japan Network Information Center (JPNIC) and the National Institute of Information and Communications Technology (NICT) in Tokyo, Japan the week of May 18-22, 2009.

SIPit 23 was hosted by ETSI in Lannion, FRANCE, October 13-17, 2008.

For more information about SIPit, please visit If you have any additonal questions, feel free to contact Robert Sparks at

SIPit (Session Initiation Protocol Interoperability Test) is a weeklong event where people bring SIP-enabled products (and services) and exercise them to improve overall interoperability across multiple implementations.

SIPit events are open to anyone with a working SIP implementation. The goal of the events is to refine both the protocol and its implementations. The SIPITs are a driving force shaping SIP into a globally interoperable protocol for real time Internet communication services.

Currently, the SIPit events are held twice a year. Different companies or organizations host each event, and each host chooses the venue.

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