Hi Jean-Denis,
Your log shows the Mediatrix GW has problems. It sends a DCS signal to
the Asterisk box, but doesn't following it with TCF as it should. The
asterisk box times out waiting for TCF and tries to take recovery action
which fails.
Spandsp has some workarounds for bugs in Mediatrix boxes. They usually
work OK.
Regards,
Steve
On 03/27/2012 08:02 AM, Jean-Denis Girard wrote:
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Hi list,
I'm having difficulties when receiving faxes from the PSTN with this
relatively simple installation:
PSTN<--PRI--> GW<--T.38--> Asterisk
The gateway is a Mediatrix 3301 (firmware Dgw 2.0.14.251). It's
configured to transmit faxes as T.38. I may have missed something in its
configuration, but it does switch to T.38 when a fax is detected. On the
Asterisk side, I'm using 10.2.1 with spandsp-0.0.6-pre20 and ReceiveFax
from res_fax_spandsp. ${FAXSTATUS} returns FAILED and ${FAXERROR}
"Disconnected after permitted retries".
I did a network capture, attached to this mail: from my understanding,
T.38 is accepted by Asterisk, then there seems to be some UDPTL traffic,
which I don't understand...
Why does it fail, and what is wrong? I'd appreciate if someone could
send me advice / suggestions.
Thanks,
- - --
Jean-Denis Girard
SysNux Systèmes Linux en Polynésie française
http://www.sysnux.pf/ Tél: +689 50 10 40 / GSM: +689 79 75 27
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