[Freeswitch-users] Freeswitch 1.6.19 and T.38 / INCOMPATIBLE_DESTINATION

Michael Jerris mike at jerris.com
Thu Apr 26 21:25:38 UTC 2018

http://lists.freeswitch.org/pipermail/freeswitch-users/2017-January/124459.html <http://lists.freeswitch.org/pipermail/freeswitch-users/2017-January/124459.html>

> On Apr 26, 2018, at 5:20 PM, Dominique Jeannerod <dominique.jeannerod at interact-iv.com> wrote:
> Hello,
> I currently use Freeswitch 1.6.8-1 in production, and have some ISDN gateways sending SDP including T.38 for voice calls (not faxes). Calls are handled without problems by freeswitch.
> I have another platform, with freeswitch 1.6.19 and same configuration.
> However, voice calls received with SDP including t.38 are rejected with 488 INCOMPATIBLE_DESTINATION :
> ba17b1eb-961d-43fe-b820-cb469a8f292d 2018-04-25 23:47:39.434491 [DEBUG] switch_core_media.c:4028 sofia/internal_1/33183817938 at gv-ics-prd-301 T38 REFUSE on request
> ba17b1eb-961d-43fe-b820-cb469a8f292d 2018-04-25 23:47:39.434491 [NOTICE] sofia.c:7566 Hangup sofia/internal_1/33183817938 at gv-ics-prd-301 [CS_NEW] [INCOMPATIBLE_DESTINATION]
> I didn't find any valid configuration to make those calls accepted, except configuring proxy_media, which I don't want to use.
> Is this behaviour a "normal" behaviour ? Could it be a bug ?
> This is a very big issue for us ...

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