Re: [VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION

[Fred Posner]

"This cause indicates that the equipment sending this cause has received 
a request to establish a call which has low layer compatibility, high 
layer compatibility or other compatibility attributes (e.g. data rate) 
which cannot be accommodated."

--fred
On 11/28/16 1:18 PM, Nathan Anderson wrote:
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...

-- Nathan

From: VoiceOps [mailto:voiceops-boun...@voiceops.org] On Behalf Of Tanguy 
Dangelser
Sent: Sunday, November 27, 2016 8:46 PM
To: voiceops@voiceops.org
Subject: [VoiceOps] Faxing over SIP - (88) INCOMPATIBLE_DESTINATION

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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