The SIP Interoperability test events currently take place twice a year, and is coordinated by the SIP Forum in conjunction with different host companies and organizations.
Robert Sparks is the event coordinator for the SIP Forum. If you are interested in hosting a SIPit event, please contact him at
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| The Twenty First SIPit event in Beijing, China took place 2007-11-05 and was hosted by the BII Group and the Beijing University of Posts and Telecommunications (BUPT) |
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| The Twentieth SIPit event in Antwerp, Belgium took place 2007-04-16 and was hosted by Alcatel-Lucent |
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| The Nineteenth SIPit event in Durham, New Hampshire, USA took place 2006-10-16 and was hosted by the New Hampshire InterOperability Laboratory (associated with University of New Hampshire) |
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| The Eigtheenth SIPit event in Tokyo, Japan took place 2006-04-17 to 2006-04-21 and was hosted by JapanNIC |
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| The Seventeenth SIPit event in Stockholm, Sweden took place 2005-09-11 to 2005-09-16 and was hosted by Hotsip |
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| The Sixteenth SIPit event in Banff, Canada took place 2005-04-04 to 2005-04-08 and was hosted by Jasomi Networks |
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| The Fifteenth SIPit event in Taiwan took place 2004-08-23 to 2004-08-27 and was hosted by CCL/ITRI |
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| The Fourteenth SIPit event in Cannes, France took place 2004-02-08 to 2004-02-13 and was hosted by ETSI |
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| The Thirteenth SIPit event in Kanata,Canada took place 2003-08-18 to 2003-08-22 and was hosted by Mitel Networks |
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| The Twelveth SIPit event in Stockholm, Sweden took place 2003-02-24 to 2003-02-28 and was hosted by Hotsip |
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| The Eleventh SIPit event in Atlanta, GA took place 2002-10-07 to 2002-10-11 and was hosted by pulver.com |
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| The Tenth SIPit event in Cannes, France took place 2002-04-22 to 2002-04-26 and was hosted by ETSI |
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| The Ninth SIPit event took place December 2001 and was hosted by Nuera |
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| The Eighth SIPit event in Cardiff, South Wales, UK took place 2001-08-13 to 2001-08-17 and was hosted by Ubiquity |
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| The Seventh SIPit event in Cannes, France took place 2001-03-25 to 2001-03-30 and was hosted by ETSI |
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| The Sixth SIPit event in Cupertino, CA took place 2000-12-05 to 2000-12-09 and was hosted by Sun Microsystems co-sponsored by Sylantro |
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| The Fifth SIPit event in Melville, NY took place 2000-08-08 to 2000-08-10 and was hosted by pulver.com |
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| The Fourth SIPit event in Chicago, Illinois took place 2000-04-17 to 2000-04-19 and was hosted by 3Com |
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| The Third SIPit event in Richardson, Texas took place 1999-12-06 to 1999-12-08 and was hosted by Ericsson (Press release) |
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| The Second SIPit event in Melville, NY took place 1999-08-05 to 1999-08-06 and was hosted by pulver.com |
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| The First SIPit event in New York took place 1999-04-08 to 1999-04-09 and was hosted by Columbia University |
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ACTIVITIES 
