[Freeswitch-users] INCOMPATIBLE_DESTINATION

[Thorsten Göllner]

Maybe a misconfigured endpoint on the other side?

Am 22.08.2018 um 22:15 schrieb Paul Muaddib:
> Hi,
>
> It is definitely not a Fax. The guys, who are calling us from this
> number, are actually complaining that we are not reachable. But when
> we call them back the voice call perfectly works. Other Inbound calls
> are no problem.
>
> Best regards,
> Paul
>
> Am Mi., 22. Aug. 2018 um 21:53 Uhr schrieb Vallimamod Abdullah
> <vma at vallimamod.org <mailto:vma at vallimamod.org>>:
>
>     Hi,
>
>     When there is udptl media type in sdp, freeswitch ignores the
>     audio type. That's why you are getting the codec error (if you
>     don't have t38 enabled.)
>     The caller looks like a fax machine, which explains why you get a
>     direct t38 request and not a reinvite.
>
>
>     Best Regards,
>     -- 
>     Vallimamod Abdullah
>     SIP Solutions
>     vma at sip.solutions <mailto:vma at sip.solutions>
>     linkedin.com/in/vallimamod <http://linkedin.com/in/vallimamod>
>     .
>
>>     On 22 Aug 2018, at 15:55, Paul Muaddib <paul.muaddib83 at gmail.com
>>     <mailto:paul.muaddib83 at gmail.com>> wrote:
>>
>>     vars.xml
>>
>>       <X-PRE-PROCESS cmd="set" data="global_codec_prefs=PCMA,PCMU"/>
>>       <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMA,PCMU"/>
>>
>>     My phones, all Grandstream GXP2140, accept PCMA and PCMU
>>
>>     I don't have trouble with other people calling me
>>
>>     Am Mi., 22. Aug. 2018 um 15:21 Uhr schrieb Thorsten Göllner
>>     <tg-maillistings at level5.de <mailto:tg-maillistings at level5.de>>:
>>
>>         Only PCMA at 8000 is offered. Check device if codec is activated.
>>
>>         Am 21.08.2018 um 15:06 schrieb Paul Muaddib:
>>>         Hi,
>>>
>>>         I have a rarely error where I get this failure message in
>>>         the log file. I am bit wondering because this is suposed to
>>>         be a normal voice call and not a fax.
>>>
>>>         Best regards,
>>>         Paul.
>>>
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 2018-08-20
>>>         14:04:54.056776 [INFO] switch_ivr_originate.c:1215 Sending
>>>         early media
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 2018-08-20
>>>         14:04:54.056776 [ERR] mod_sofia.c:2343 CODEC NEGOTIATION
>>>         ERROR.  SDP:
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 v=0^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 o=- 20012711 20012711
>>>         IN IP4 217.0.15.67^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 s=on transit^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 c=IN IP4 X.X.X.X^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 t=0 0^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 m=audio 13274 RTP/AVP 8
>>>         118 126 101^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=rtpmap:8 PCMA/8000^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=rtpmap:118 PCMA/8000^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=rtpmap:126
>>>         CLEARMODE/8000^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=rtpmap:101
>>>         telephone-event/8000^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=fmtp:101 0-15^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=gpmd:118 vbd=yes^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=ptime:20^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 m=image 11232 udptl t38^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=T38FaxVersion:0^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=T38MaxBitRate:14400^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=T38FaxMaxBuffer:3000^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 a=T38FaxMaxDatagram:500^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28
>>>         a=T38FaxRateManagement:transferredTCF^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28
>>>         a=T38FaxUdpEC:t38UDPRedundancy^M
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28
>>>         fe3eed7c-e03a-40af-bc2e-ae0bfe54bb28 2018-08-20
>>>         14:04:54.056776 [NOTICE] switch_channel.c:3515 Hangup
>>>         sofia/external/+49XXXXXXXXX at sip-trunk.telekom.de
>>>         <mailto:49XXXXXXXXX at sip-trunk.telekom.de> [CS_EXECUTE]
>>>         [INCOMPATIBLE_DESTINATION]
>>
>
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