[VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION

Tanguy Dangelser tdangelser at guyacom.fr
Sun Nov 27 23:46:00 EST 2016


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.

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)

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.

Thank you,



Résidence petit Chalet – Châton
56 avenue Louis Pasteur – 97300 CAYENNE
Guyane Française – French Guiana

Tél : +594 (0) 594 25 00 00 - Fax : +594 (0) 594 25 37 85

<http://hu.linkedin.com/company/guyacom>   <service.technique at guyacom.fr>
   <http://www.youtube.com/user/GUYACOM>   <http://www.guyacom.net/>
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