[Asterisk-Dev] txfax and fun

[Matthew Boehm]

Kevin P. Fleming wrote:
> Mark Zedwick wrote:
> 
>> The Cisco 5350 supports T.38, and I can receive incoming faxes via
>> this scenario just fine. I've had a 100% success rate with a dozen
>> or so 1 page faxes that I have sent from the normal PSTN to *, which
>> emails them to me as PDF's. Works like a champ.
> 
> Asterisk does not support T.38, so you are not actually using the
> AS5350's T.38 support when you are receiving faxes.
> 
>> txfax(/var/spool/asterisk/fax/1234567890/1112740316.19.tif|caller) on
>> SIP/xxx.xxx.xxx.xxx-366c
>> Apr 19 07:06:23 WARNING[30813]: chan_sip.c:2916 process_sdp: Unknown
>> SDP media type in offer: image 18912 udptl t38
>> Apr 19 07:29:05 NOTICE[30813]: pbx_spool.c:241 attempt_thread: Call
>> completed to SIP/XXXX1234567890 at xxx.xxx.xxx.xxx
> 
> Right here... the gateway wants to receive the media via T.38, but
> Asterisk can't send it that way.

We have T38 working: Fax -> ATA -> Asterisk -> Cisco 5300 -> PSTN Fax

The call shows as G711 in asterisk, but shows as T38 in the router.

-Matthew