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<p class="MsoNormal">Tim, We are using a couple regional smaller telcos and of course they say I’m the only one having issues. We are going straight with no transcoding. Thanks for the input and config lines, I appreciate it!<o:p></o:p></p>
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<p class="MsoNormal">Jason<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Johnson, Tim <johns10t@cmich.edu> <br>
<b>Sent:</b> Monday, June 21, 2021 5:22 PM<br>
<b>To:</b> JASON BURWELL <JASON.BURWELL@foundersfcu.com><br>
<b>Cc:</b> cisco-voip <cisco-voip@puck.nether.net><br>
<b>Subject:</b> RE: [External] Re: [cisco-voip] Faxing over CUBE SIP Trunks<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Curious what provider you’re using. Right now I’m using XMedius out to Frontier and I’d say it works about 95% of the time for outbound, though the majority of our outbound goes through VG202XMs. I know it’s typically recommended to use
the same signaling through the call flow, so run SIP all the way through on your end. Avoid MTP or transcoding.
<o:p></o:p></p>
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<p class="MsoNormal">We have the following set on our dial peers:<o:p></o:p></p>
<p class="MsoNormal">fax-relay ecm disable<o:p></o:p></p>
<p class="MsoNormal">fax-relay sg3-to-g3<o:p></o:p></p>
<p class="MsoNormal">fax-relay ans-disable<o:p></o:p></p>
<p class="MsoNormal">fax rate 14400<o:p></o:p></p>
<p class="MsoNormal">fax nsf 000000<o:p></o:p></p>
<p class="MsoNormal">fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback pass-through g711ulaw<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Based on the experience, it doesn’t seem like any of them actually do anything other than the fax protocol.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> cisco-voip <<a href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>>
<b>On Behalf Of </b>Jason Aarons<br>
<b>Sent:</b> Monday, June 21, 2021 4:26 PM<br>
<b>To:</b> JASON BURWELL <<a href="mailto:JASON.BURWELL@foundersfcu.com">JASON.BURWELL@foundersfcu.com</a>><br>
<b>Cc:</b> cisco-voip <<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>><br>
<b>Subject:</b> [External] Re: [cisco-voip] Faxing over CUBE SIP Trunks<o:p></o:p></p>
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<p class="MsoNormal">The providers should support t38 to be reliable. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Jun 21, 2021, 2:27 PM JASON BURWELL via cisco-voip <<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can anyone offer some guidance doing faxing over SIP Trunks? Ever since switching to CUBE SIP trunks I’ve been having challenges with outbound faxes. With one provider, it rarely
works, the other it works most of the time but is not reliable. Sometime it fails and I resend it and works fine. I have an Xmedius Fax Server using T38 with G711 fallback. Feel like I am missing something, I’ve had a few cases open and a mix of fingerpointing
(XMedius/Cisco/Provider) and dead ends but no solid resolution. Just figured I’d ask out here before I escalate these cases again. Both providers use G711 codec on the trunks. When I point the calls pack to MGCP PRI I have no issues.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Jason
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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