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<div class="moz-cite-prefix">The part of the company to call depends
on what part of the company those trunks come from. Contact your
AT&T account manager.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">If they're IXC circuits,
<a class="moz-txt-link-freetext" href="https://primeaccess.att.com/shell.cfm?section=4343">https://primeaccess.att.com/shell.cfm?section=4343</a><br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 12/21/20 10:56 AM, Dave Frigen
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:00a301d6d7b1$e30cabd0$a9260370$@wabash.net">
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<p class="MsoNormal">We’ve narrowed this down to calls
completing on our facilities (from likely least cost routing)
down an AT&T TDM/SS7 terminating trunk group. We have no
contacts for this trunk group, and even turned the trunk group
down for a day thinking we would get a call, but didn’t. We’re
still getting two calls to a single number, one call with
caller on it and the other with dead air. The dual calls are
coming from various service providers on this trunk group. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Anyone have any suggestions?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dave<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
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<p class="MsoNormal"><b>From:</b> Dave Frigen
<a class="moz-txt-link-rfc2396E" href="mailto:dfrigen@wabash.net"><dfrigen@wabash.net></a> <br>
<b>Sent:</b> Friday, December 11, 2020 11:55 AM<br>
<b>To:</b> '<a class="moz-txt-link-abbreviated" href="mailto:voiceops@voiceops.org">voiceops@voiceops.org</a>'
<a class="moz-txt-link-rfc2396E" href="mailto:voiceops@voiceops.org"><voiceops@voiceops.org></a><br>
<b>Cc:</b> 'Rodney Young' <a class="moz-txt-link-rfc2396E" href="mailto:Rodney@wabash.net"><Rodney@wabash.net></a>; 'Don
Ross' <a class="moz-txt-link-rfc2396E" href="mailto:deross@wabash.net"><deross@wabash.net></a>; 'Barry Adair'
<a class="moz-txt-link-rfc2396E" href="mailto:barryadair@wabash.net"><barryadair@wabash.net></a><br>
<b>Subject:</b> SS7 problems<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I know SS7 is not a big part of the voice
world for many of you, but for those of you still exposed to
it, just curious if anyone experienced any problems with SS7
signaling in the past couple of days where Terminating
signaling times out and a 2<sup>nd</sup> retry and new call
set up for the call delivery occurs. The result was the phone
ringing the customer, no one there. Second attempt
successfully (if multiline hunt group) comes in on next
line/trunk.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Trouble tickets reported: Customers
complaining about phones ringing, no one on the other end.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We traced the issue upstream in the SS7
signaling. The signaling was timing out after 15 seconds,
creating call retry. We had our SS7 provider look into it. No
trouble found, but the “gremlins” mysteriously disappeared
after the testing……concerned trouble may reoccur.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any reference to anyone else experiencing
these issues recently would be appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dave<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:22.0pt">Dave
Frigen<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><i><span style="font-size:12.0pt">Chief
Operating Officer <o:p></o:p></span></i></b></p>
<p class="MsoNormal">Wabash Communications CO-OP | <a
href="http://www.wabash.net" moz-do-not-send="true">www.wabash.net</a><o:p></o:p></p>
<p class="MsoNormal">Office: 618.665.3311 <o:p></o:p></p>
<p class="MsoNormal">
<o:p></o:p></p>
<p class="MsoNormal"><a
href="https://www.facebook.com/wabashcommunicationscoop/"
moz-do-not-send="true"><span
style="color:windowtext;text-decoration:none"><img
style="width:.2708in;height:.2708in"
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href="https://www.instagram.com/wabashcommunications/"
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id="Picture_x0020_3"
src="cid:part6.ED3F2BA1.E6A7FF47@clearrate.com" class=""
width="26" height="26" border="0"></span></a> <a
href="https://www.linkedin.com/company/18788687/admin/"
moz-do-not-send="true"><span
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src="cid:part8.6694F12F.51A2DE5A@clearrate.com" class=""
width="24" height="24" border="0"></span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="http://www.wabash.net/"
moz-do-not-send="true"><span
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style="width:2.0104in;height:.6875in"
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alt="WabashCom_CO-OP_RGB.png" class="" width="193"
height="66" border="0"></span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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