[asterisk-users] Sending faxes with T.38 problem. Asterisk - 1.6.0.6

[Santiago Gimeno]

Hello,

Thanks everybody for the answers.

>Could be. Would you post the Cisco config relevant to this?

dial-peer voice 5 voip
description ** **
preference 1
destination-pattern 1…
voice-class codec 1
session protocol sipv2
session target ipv4:1.1.1.1
session transport udp
dtmf-relay rtp-nte
fax-relay ecm disable
fax nsf 000000
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback pass-through
g711alaw
no vad


>And upon further examination... don't put T38CALL in as a variable. It will
cause the initial INVITE to only
>have T38. Leave it out and things should hopefully reinvite.

I have removed the T38CALL variable and it looks better but it still doesn't
work.
Now asterisk sends an initial INVITE with audio media in the SDP. The CISCO
accepts this call after contacting the fax-machine. Then the CISCO sends a
re-INVITE with the T.38 SDP. Asterisk accepts this re-INVITE. But finally
the fax transmission fails and the asterisk verbose trace is:

*CLI>     -- Attempting call on SIP/080913216002 at outbound-calls for
22222 at fax-out:1 (Retry 1)
  == Using SIP RTP CoS mark 5
  == Using UDPTL CoS mark 5
       > Channel SIP/outbound-calls-0822aae8 was answered.
  == Starting SIP/outbound-calls-0822aae8 at fax-out,22222,1 failed so
falling back to exten 's'
    -- Executing [s at fax-out:1] Set("SIP/outbound-calls-0822aae8",
"FAXFILE=/root/santi/fax/prueba.tif") in new stack
    -- Executing [s at fax-out:2] SIPDtmfMode("SIP/outbound-calls-0822aae8",
"inband") in new stack
    -- Executing [s at fax-out:3] SendFAX("SIP/outbound-calls-0822aae8",
"/root/santi/fax/prueba.tif") in new stack
[Mar 10 17:15:28] WARNING[17125]: app_fax.c:176 phase_e_handler: Error
transmitting fax. result=11: Far end cannot receive at the resolution of the
image.
[Mar 10 17:15:28] WARNING[17125]: app_fax.c:621 transmit: Transmission error
  == Spawn extension (fax-out, s, 3) exited non-zero on
'SIP/outbound-calls-0822aae8'

Any ideas?

Thanks. Best regards,

Santi



On Tue, Mar 10, 2009 at 4:26 PM, Joshua Colp <jcolp at digium.com> wrote:
>
> ----- "Santiago Gimeno" <santiago.gimeno at gmail.com> wrote:
>
> >
> > **The call-file I'm using is:
> >
> > Channel: SIP/080999999999 at outbound-
> > calls
> > MaxRetries: 3
> > WaitTime: 30
> > Set: LOCALSTATIONID=22222
> > Set: LOCALHEADERINFO=T38 fax
> > Set: T38CALL=1
> > Set: T38TXDETECT=yes
> > CallerID: 22222
> > Context: fax-out
> > Extension: 22222
> > priority:1
> >
>
> And upon further examination... don't put T38CALL in as a variable. It
will cause the initial INVITE to only
> have T38. Leave it out and things should hopefully reinvite.
>
> --
> Joshua Colp
> Digium, Inc. | Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> Check us out at:  www.digium.com  & www.asterisk.org
>
> _______________________________________________
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