[asterisk-users] app_txfax

[Scott Gifford]

Hello,

I'm setting up Asterisk to send outgoing faxes over a PRI line.  I
installed app_txfax and its prerequisites and astfax to submit email
messages to Asterisk.  This all seems to work fine, but I get some
error messages in my logs I don't understand.  Whenever I send a fax
it goes through fine, but I get these messages in the logs:

    [Jan 17 11:21:07] WARNING[2413] chan_zap.c: Unable to request echo
                      training on channel 1
    [Jan 17 11:21:13] WARNING[2413] pbx.c: Zap/1-1 already has a call
                      record??
    [Jan 17 11:21:35] WARNING[2413] /home/sgifford/src/agx-ast-addons/app_txfax.c:
                      Transmission loop error

When I send a fax to a line that's busy, I get:

    [Jan 17 11:40:29] NOTICE[2439] pbx_spool.c: Call failed to go
                      through, reason (0 ) Call Failure (not BUSY, and
                      not NO_ANSWER, maybe Circuit busy or down?)

while I would expect a simple BUSY.

Also, app_txfax will retry the fax a few times before giving up.  I'd
like to know when it gives up, so I can let the fax sender know that
it didn't go through.  Is there a way to hook into that?

I'm using Asterisk 1.4.17 with spandsp 0.0.4, tx_fax from
agx-ast-addons 1.4.3, and astfax 1.0.  It's running on Debian Sarge
(4.0) with Debian-supplied kernel 2.6.18.  I'm using a Digium TE110P
card with zaptel driver 1.4.7.1.

Thanks for any ideas!

----Scott.