That sounds like the other end doesn't support or T.38 or doesn't want to pass it through. On 11/27/2016 11:46 PM, Tanguy Dangelser wrote:
Hi,
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) INCOMPATIBLE_DESTINATION
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,
Tanguy
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