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<p class="MsoNormal">Don’t forget that unregistered mobile phone calls to PSAPs can originate
<b>without</b> a calling telephone number.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">(And for what it’s worth, I think there should be work to use a TLDN in the calling number and associate it to the mobile device so that callback can work even in the case of an unregistered mobile. – there you go, free IPR.
<span style="font-family:"Segoe UI Emoji",sans-serif">😉</span>)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Pierce<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sipnoc26-attendees-bounces@sipforum.org <sipnoc26-attendees-bounces@sipforum.org>
<b>On Behalf Of </b>Chris Wendt via Sipnoc26-attendees<br>
<b>Sent:</b> Friday, October 2, 2026 11:58 AM<br>
<b>To:</b> Scott Tabor <scott.tabor@dicecorp.com>; Guitián, Orlando (New York) <orlando@smartcarrier.com>; sipnoc26-attendees@sipforum.org<br>
<b>Subject:</b> Re: [Sipnoc26-attendees] NG911/PSAP Authentication Discussion BOF<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:dotted #FFFFB3 1.0pt;padding:2.0pt 2.0pt 2.0pt 2.0pt">
<p class="MsoNormal" style="background:#FFFFB3"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:black">CAUTION: This email has originated outside of Numeracle. Please do not click on any links or open any attachments unless you can confirm
the sender and you know the content is safe. <o:p></o:p></span></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="100%" align="center">
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<p class="MsoNormal"><span style="color:black">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Reminder about the BOF and inspired by Scott and Orlando’s messages to the list I thought I would create a bit of an agenda to at least kick off the discussion, don’t have to follow it, but something to get the
conversation started.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<div>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoNormal" style="color:black;mso-list:l3 level1 lfo1">Introductions (10 min). Name, organization, and your connection to/interest in 911 or life-safety calling.<o:p></o:p></li></ol>
</div>
<div>
<ol style="margin-top:0in" start="2" type="1">
<li class="MsoNormal" style="color:black;mso-list:l3 level1 lfo1">Inbound: spoofed and untrusted calls to 911 (15 min). Orlando to recap what he presented at SIPNOC: what PSAPs are seeing, how it consumes response resources, and where authentication information
is lost or unavailable on the way to the PSAP.<o:p></o:p></li></ol>
</div>
<div>
<ol style="margin-top:0in" start="3" type="1">
<li class="MsoNormal" style="color:black;mso-list:l3 level1 lfo1">Outbound: legitimate life-safety calls that don't get through (15 min). Scott to cover alarm central station verification calls and PSAP callbacks being blocked, labeled as spam, or misrouted,
with real-world cases.<o:p></o:p></li></ol>
</div>
<div>
<ol style="margin-top:0in" start="4" type="1">
<li class="MsoNormal" style="color:black;mso-list:l3 level1 lfo1">Discussion of Scott's proposed items (15 min)<o:p></o:p></li></ol>
</div>
<div>
<p class="MsoNormal" style="margin-left:66.0pt;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black">Using authenticated identity (A attestation, BCID/RCD, TN-level credentials such as VESPER) to protect verified life-safety callers from pattern-based blocking<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:66.0pt;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black">Consumer opt-in tied to the authenticated caller rather than a number, so it holds when numbers rotate or carriers change<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:66.0pt;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black">A fast, no-cost redress path when life-safety calls are mislabeled<o:p></o:p></span></p>
</div>
<div>
<ol style="margin-top:0in" start="5" type="1">
<li class="MsoNormal" style="color:black;mso-list:l2 level1 lfo3">Next steps (5 min). Where the SIP Forum can help, whether through its own work or by bringing these gaps to the relevant standards groups (IETF STIR, ATIS/SIP Forum IP-NNI, NENA). Also: whether
to hold a follow-up session, and who else should be in the conversation.<o:p></o:p></li></ol>
</div>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black;background:white">NG911/PSAP Authentication Discussion BoF</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">Oct 2, 2026, 1:00</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">–</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">2:30
PM (America/New York)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">Please join my meeting from your computer, tablet or smartphone.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#5376B0"><a href="https://meet.goto.com/988744981" title="https://meet.goto.com/988744981"><span style="color:#5376B0">https://meet.goto.com/988744981</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">You can also dial in using your phone.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">Access Code: 988-744-981<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">United States:
</span><span style="color:#5376B0"><a href="tel:+18722403212"><span style="color:#5376B0">+1 (872) 240-3212</span></a></span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:black">Get the app now and be ready when your first meeting starts:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#5376B0;background:white"><a href="https://meet.goto.com/install" title="https://meet.goto.com/install"><span style="color:#5376B0">https://meet.goto.com/install</span></a></span><span style="color:#5376B0"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">-Chris<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<div id="mail-editor-reference-message-container">
<div style="border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;border-color:currentcolor currentcolor">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">Scott Tabor <<a href="mailto:scott.tabor@dicecorp.com">scott.tabor@dicecorp.com</a>><br>
<b>Date: </b>Friday, September 25, 2026 at 2:45</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">PM<br>
<b>To: </b>Guitián, Orlando (New York) <<a href="mailto:orlando@smartcarrier.com">orlando@smartcarrier.com</a>>; Chris Wendt <<a href="mailto:cwendt@somos.com">cwendt@somos.com</a>><br>
<b>Cc: </b><a href="mailto:sipnoc26-attendees@sipforum.org">sipnoc26-attendees@sipforum.org</a> <<a href="mailto:sipnoc26-attendees@sipforum.org">sipnoc26-attendees@sipforum.org</a>><br>
<b>Subject: </b>[EXTERNAL] Re: [Sipnoc26-attendees] NG911/PSAP Authentication Discussion BOF<o:p></o:p></span></p>
</div>
<div id="mail-editor-reference-message-body">
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">[THIS MESSAGE IS FROM AN EXTERNAL SOURCE REVIEW CAREFULLY]</span></b><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
<div class="MsoNormal" style="background:white"><span style="color:black">
<hr size="2" width="100%" align="left">
</span></div>
<p class="MsoNormal"><span style="color:black">Chris, Orlando, all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Thanks for getting this started, Chris. October 2 at 1 PM ET works for me too.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">On the topic question, I'd suggest we look at both directions of the trust gap: spoofed calls coming to 911, and legitimate public-safety calls going out that never reach the person they're meant for.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">For those I didn't meet I'm with DICE Corporation, which builds automation software for alarm monitoring central stations and is a vetting agent for CTIA's Branded Calling ID, and IPtelX, a registered carrier specializing
in alarm signaling also operating as a BCID signing agent and OSP.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Alarm central stations work in front of the PSAP. Before a station asks for a dispatch, it calls the homeowner or keyholder to verify the alarm, and many jurisdictions require this. Those calls are short, high-volume,
and come from a small pool of numbers, which is exactly the pattern analytics engines treat as robocalling. When the verification call is blocked, labeled as spam, or lands in the wrong voicemail, the station can't rule out a false alarm, so police are dispatched
to a home where nothing is wrong. The best outcome is a wasted response and a false alarm fine for the homeowner. The worst is a tense armed encounter on private property that never needed to happen. It's the same failure Orlando described that response resources
consumed because call trust broke down, only coming from the other direction.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I have just a few items I'd like to see considered and discussed. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<div>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo4">Recognizing legitimate life-safety calls. How can authenticated identity (A attestation, BCID/RCD, or TN-level credentials like VESPER ) work to protect verified callers such as central stations
and PSAP callbacks from pattern-based blocking?<o:p></o:p></li></ul>
</div>
<div>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo4">Consumer opt-in tied to identity, not a number. Subscribers should be able to say, "always deliver calls from my alarm company or my doctor's office," and that consent could follow the authenticated
caller even when it rotates numbers or changes carriers.<o:p></o:p></li></ul>
</div>
<div>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo4">Redress: a fast, no-cost path when life-safety calls are mislabeled.<o:p></o:p></li></ul>
</div>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I'm happy to bring the central station perspective and some real-world cases to the call.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I look forward to the discussion and to hearing everyone's feedback.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">
<a href="mailto:sipnoc26-attendees-bounces@sipforum.org">sipnoc26-attendees-bounces@sipforum.org</a> <<a href="mailto:sipnoc26-attendees-bounces@sipforum.org">sipnoc26-attendees-bounces@sipforum.org</a>> on behalf of Guitián, Orlando (New York) <<a href="mailto:orlando@smartcarrier.com">orlando@smartcarrier.com</a>><br>
<b>Sent:</b> Thursday, September 24, 2026 11:05 PM<br>
<b>To:</b> Chris Wendt <<a href="mailto:cwendt@somos.com">cwendt@somos.com</a>><br>
<b>Cc:</b> <a href="mailto:sipnoc26-attendees@sipforum.org">sipnoc26-attendees@sipforum.org</a> <<a href="mailto:sipnoc26-attendees@sipforum.org">sipnoc26-attendees@sipforum.org</a>><br>
<b>Subject:</b> Re: [Sipnoc26-attendees] NG911/PSAP Authentication Discussion BOF<o:p></o:p></span></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"wf_segoe-ui_normal",serif;color:#212121">You don't often get email from
<a href="mailto:orlando@smartcarrier.com">orlando@smartcarrier.com</a>. <a href="https://aka.ms/LearnAboutSenderIdentification">
Learn why this is important</a><o:p></o:p></span></p>
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<p class="MsoNormal">Thank you for starting this email thread. October 2nd at 1 PM Eastern works for me. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Have a great night,<o:p></o:p></p>
<p class="MsoNormal">Orlando<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">On Thu, Sep 24, 2026 at 09:26 Chris Wendt <<a href="mailto:cwendt@somos.com">cwendt@somos.com</a>> wrote:<o:p></o:p></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<p class="MsoNormal"><span style="color:black">Hi Everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Hope everyone had safe travels home after a great SIPNOC!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I wanted to follow up on our suggestion to organize a virtual BOF session inspired by the talk given by Orlando on the issues being seen around authentication. I think it would be great to have a focused discussion
on this and related topics.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Coincidentally, I’m at the IIT RTC conference, as you may/may not know IIT and Carol David and her lab has been a large supporter of NG911 and testbeds and there was a great set of talks and a panel about where
things are around NG911.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I spoke with Marc and I think we just need to pick a date and Marc can coordinate a gotomeeting to have the online meeting to discuss.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I would propose October 2 maybe 1pm Eastern?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Thoughts on the specific topic? I think it would just be great to bring these communities together and talk more about this important topic.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">-Chris<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal">_______________________________________________<br>
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<p class="MsoNormal"><o:p> </o:p></p>
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