[Asterisk-Dev] txfax and fun

[Kevin P. Fleming]

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.