[VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION
nathana at fsr.com
Mon Nov 28 13:18:06 EST 2016
What specifically is displaying "(88) INCOMPATIBLE_DESTINATION"? That's not a normal SIP message. Is this Zoiper that shows this? Freeswitch? Kamailio? The gateway?
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...
From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Tanguy Dangelser
Sent: Sunday, November 27, 2016 8:46 PM
To: voiceops at voiceops.org
Subject: [VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION
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.
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