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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What specifically is displaying "(88) INCOMPATIBLE_DESTINATION"? That's not a normal SIP message. Is this Zoiper that shows this? Freeswitch? Kamailio?
The gateway?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What you really need is a packet capture of the SIP conversation that is happening between the entity throwing that error and whatever it is INVITEing. So
if Zoiper is displaying that message, make a capture of the signalling between Zoiper and Freeswitch. It will certainly supply you with some clues about what is going on...<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">-- Nathan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> VoiceOps [mailto:voiceops-bounces@voiceops.org]
<b>On Behalf Of </b>Tanguy Dangelser<br>
<b>Sent:</b> Sunday, November 27, 2016 8:46 PM<br>
<b>To:</b> voiceops@voiceops.org<br>
<b>Subject:</b> [VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I know that faxing over SIP can be source of a whole lot of issues, but I am wondering if someone had the same that I am currently running into.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have a softphone (Zoiper) sending a fax (TIFF image sent to a physical fax on PSTN) through a SIP platform with freeswitch / kamailio which is forwarding the fax to my PSTN Gateway (telcobridges TMG800), the fax is detected as T38 and
everything looks good, except that it ends with (88) INCOMPATIBLE_DESTINATION <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Does anyone has an idea what might cause this and what could help resolve the issue ? I can send the trace if you email me. Any help appreciated.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thank you,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Tanguy<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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DANGELSER</span></b><span style="font-size:13.5pt;font-family:"Tw Cen MT","sans-serif";color:black"><br>
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