In sip.conf add to [general] context and to every peer context that you
want to register in Asterisk to use T.38 the following lines:
t38pt_udptl=yes
t38pt_rtp=no
t38pt_tcp=no
In udptl.conf file I have the following configurations:
[general]
udptlstart=4000
udptlend=4999
T38FaxUdpEC = t38UDPRedundancy
T38FaxMaxDatagram = 400
udptlfecentries = 3
udptlfecspan = 3
Good luck,
Ricardo.
Kokfoo Soo wrote:
Ricardo,
Thanks, could you please share some of your t.38 passthrough
configuration in sip.conf and also udptl.conf?
Thanks,
*/Ricardo Carvalho <[EMAIL PROTECTED]>/* 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:[EMAIL PROTECTED]: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: [EMAIL PROTECTED]
> 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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