From: "Bill Gibbs" <[EMAIL PROTECTED]>
Date: Fri, 16 Feb 2007 15:55:13 -0500
I am testing out hylafax and iaxmodem. Submitting jobs to the hylafax
server and having it then dial using iaxmodem is working fine.
Hylafax server is talking to my Asterisk box that has a Sangoma A101 in
it via iaxmodem via an IAX channel using ulaw.
A call coming into a certain test DID comes into the Sangoma A101 then
it goes to another box via IAX ulaw that uses the rxfax app to capture
the fax. I am using rxfax right now because I am just starting to test
hylafax.
Normal faxes into my test DID work fine so I know it's not the Sangoma
or rxfax app or communication between those 2 servers. I notice the
Sangoma detects incoming fax tones for these faxes.
However, if I send the fax via iaxmodem, I notice the Sangoma sends the
call out via my trunk group that turns off the echo cancellation
(Because I am using a group I setup to do that, there it's surprise
there) but when it comes back in, the Sangoma is not turning off echo
cancellation. The end result is rxfax gets the tiff image, but then the
call just hangs up and the pdf is never created and sent. The Tiff
image appears to be complete however but the call just hangs up after
that.
I don't have experience with iaxmodem (although your posting just gave me
great confidence that I could use it). But you missed one piece of info:
when "normal" FAX' send to your test DID, does Sangoma turn off echo
cancellation on that channel? This would be a useful test to confirm your
theory that echo cancellation is causing the problem.
Another piece of useful information would be, when you say "when it comes
back in", do you mean you are using iaxmodem to dial another channel in the
trunk group it dials out, and that channel uses iaxmodem on the same server
to receive the FAX call?
Yet another important - and easy - test would be the one you haven't done:
send a FAX via the trunk to an alalogue FAX. Or may be you have? I mean,
send a FAX via Sangoma to an alalogue line to receive the FAX. If you are
concerned about spamming other people's FAX machine, you can even set up
eFAX for free in one minute, and send the test FAX to yourself. (But get to
wonder how your office FAX is connected.:-)
Yuan Liu
I think the problem is due to the Sangoma not detecting the fax tones.
Am I missing a setting with iaxmodem or hylafax?
To recap:
Test DID works fine with normal analog and other fax via ATA adapters so
I think I can safely rule out a misconfiguration there
Iaxmodem registered, hylafax clearly sends the fax via it as I see it
coming back in and the tiff created using rxfax
The problem appears to be coming back - echo cancellation not being
turned off.
Unfortunately like many of us, I don't have a test PRI server I can play
with so I have to do this after hours. I will be turning off echo
cancellation late at night and seeing if that solves the problem but
wanted to pose this question to the list.
I have _not_ tested it to an outside analog fax yet via
hylafax/iaxmodem.
Bill
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
