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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt'>Dear SIP Forum Members:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>SIPit 33 – the SIP Forum’s upcoming SIP Interoperability Testing Event, SIPit 33, is coming up fast in a little over a month. The event has been scheduled the week of December 13-17, 2021.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Organized by the SIP Forum, the SIPit events are the world’s premier interoperability testing events for SIP, bringing together leading SIP application developers, service providers and IP communications equipment manufacturers to ensure their SIP implementations work seamlessly together in an IP network testing environment.<span style='color:#1F497D'><o:p></o:p></span></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>The purpose of SIPit is to test for interoperability of SIP implementations, to determine the source of incompatibilities, inform new standards work, and drive refinement of the specifications. <span style='color:#1F497D'><o:p></o:p></span></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#C00000'>Please be aware that this event is open only to actual implementers with working SIP implementations.</span><span style='font-size:12.0pt;color:#1F497D'> </span><span style='font-size:12.0pt'>The results of testing that occur at SIPit 33 will be kept completely confidential – and no attribution to companies or individuals, or products or services will be made.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>SIPit is organized by the SIP Forum’s Test Event Working Group (TEWG), co-chaired by Robert Sparks of Nostrum, and Chris Wendt, co-chair of the joint SIP Forum/ATIS IP-NNI Task Force. The SIPit events serve as a “plugfest” for participating companies to perform SIP interoperability testing with other participants in a live network environment. To date, the SIP Forum has hosted 32 SIPit events around the globe. The previous event, SIPit 32, was hosted by the <a href="https://www.iol.unh.edu/"><span style='color:windowtext'>University of New Hampshire Interoperability Laboratory</span></a> (UNH-IOL) in Durham, New Hampshire.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Due to the ongoing pandemic, the SIP Forum will be holding SIPit 33 virtually, with remote connectivity to the testing environment, and will once again be hosted by the <span style='color:black'>UNH-IOL</span>. Meetings associated with the event will be held using a variety of video-conferencing services to facilitate discussion, brainstorming and debugging amongst the event participants.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>The main focus for this upcoming SIPit 33 event will be on Secure Telephone Identity (STI) related technologies.<span style='color:#1F497D'> </span>This includes protocols and industry initiated efforts around STIR/SHAKEN in the U.S. as well as some similar and related efforts happening internationally. The event is designed for implementers that wish to test their devices and cloud and premise-based SIP services that implement the protocols related to STI.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>SIPit 33 tests can include various protocol-related Interop including:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Rich Call Data<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Certificate Delegation<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Diversion<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>SHAKEN<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>RPH/911<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>In addition, SIPit 33<span style='color:#1F497D'> </span>participants are welcome to also demonstrate and/or brainstorm topics such as:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Display<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Entity and TN Vetting<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Certificates/ACME<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:12.0pt'>Error Handling<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:12.0pt'>FOR MORE INFORMATION AND TO REGISTER<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>For more information about SIPit 33 please visit the <a href="https://www.sipforum.org/news-events/test-event-wg-overview-and-charter-sipit/upcoming-sipit-events/" target="_blank">event’s webpage</a>, or send an email to <a href="mailto:sipit-info@sipforum.org">sipit-info@sipforum.org</a>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>SIPit 33 registration is open, and the individual participation fee has been set at $150 USD. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>To register, please visit <a href="https://learnforlife.unh.edu/portal/events/reg/participantTypeSelection.do?method=load&entityId=153319111" target="_blank">https://learnforlife.unh.edu/portal/events/reg/participantTypeSelection.do?method=load&entityId=153319111</a>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Once your registration is approved, you will be provided a login to the SIPit 33 wiki, where additional information about the event can be found and where participants and associated teams can meet to arrange joint tests. You will also be subscribed to the SIPit mailing list to keep you informed about the event. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>For more information about past SIPit events, please visit <a href="http://www.sipit.net" target="_blank">www.sipit.net</a>. In addition, summaries of the aspects of the protocols tested at past SIPit events are available at <a href="http://www.sipit.net/SIPitSummaries" target="_blank">www.sipit.net/SIPitSummaries</a>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:12.0pt'>SPONSORSHIP INFORMATION<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:12.0pt'>For companies interested in supporting SIPit 33 through their sponsorship of the event, please contact Marc Robins at <a href="mailto:marc.robins@sipforum.org">marc.robins@sipforum.org</a> to receive information about sponsorship benefits and costs.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p></div></body></html>