[asterisk-users] asterisk t.38 fax failed

[Kokfoo Soo]

Ricardo,
Thanks, could you please share some of your t.38 passthrough configuration in sip.conf and also udptl.conf?

Thanks,

Ricardo Carvalho <rcarvalho at iric.up.pt> wrote: No, T.38 doesn't work with Asterisk. Only works with Asterisk 
t38passthrough patch that you can find at URL: 
http://bugs.digium.com/file_download.php?file_id=9335&type=bug
For me it only worked well with patch for version 1.2.4 of Asterisk.

Regards,

Ricardo.






Kokfoo Soo wrote:
> Is T.38 fax work through Asterisk? I have the config below in my 
> sip.conf, but the fax doesn't work and give me the CLI lines below. My 
> current version is 1.2.10. Please help.
>
> [Inboundtopbx]
> type=friend
> context=pbx
> host=10.18.188.84
> insecure=port
> dtmfmode=rfc2833
> canreinvite=no
> disallow=all
> allow=g729
> allow=ulaw
> t38pt_udptl=yes
> t38pt_rtp=no
> t38pt_tcp=no
>
> [OutboundfromPBX]
> type=peer
> host=10.18.161.222              
> canreinvite=no
> dtmfmode=rfc2833
> disallow=all
> allow=g729
> qualify=yes
> t38pt_udptl=yes
> t38pt_rtp=no
> t38pt_tcp=no
>
> <-- SIP read from 10.18.188.84:50096:
> ACK sip:17815057304 at 10.18.161.237:5060 SIP/2.0
> Via: SIP/2.0/UDP  10.18.188.84:5060
> From: ;tag=19D429E8-2084
> To: ;tag=as3c87a22e
> Date: Tue, 05 Sep 2006 19:42:28 GMT
> Call-ID: 7F23A1F9-3C4D11DB-A303B82B-9F58A83F at 10.18.188.84
> Max-Forwards: 6
> Content-Length: 0
> CSeq: 101 ACK
>
>
> --- (9 headers 0 lines)---
> Sep  5 15:30:31 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP 
> codec 100 received
> Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP 
> codec 100 received
> Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP 
> codec 100 received
> Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP 
> codec 100 received
> Sep  5 15:30:34 WARNING[6839]: chan_sip.c:3475 process_sdp: Unknown 
> SDP media type in offer: image 16406 udptl t38
>
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