asterisk users - Dec 2009 - Issue with T38 fax Calls

Hi all..
Im using ABE C3.2.1 version and here Im having the following issue with
respect to T38 fax calls. 

Somehow asterisk when it receives Session modification request with the
T38 Codec, is not forwarding the request to the other end. Also asterisk
is responding with 200 Ok to this RE INVITE with an audio line rather an
media line with image. The session id here strangely matches to that of
previously active session belonging to the same dialog


FYI
Im enclosing the SIP logs for this issue...the setup is having 2 Uas
(2052 and 2053) on one m/c (10.232.44.48) talking to Asterisk PBX on
(10.232.44.41). 
2052 initiated a fax call to 2053

Kindly let me knw if you have any clue on the possible cause for this
issue


Thanks n Regards
Arun
 

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On Tue, Dec 1, 2009 at 6:00 AM, Venkatesh Arun-A21466
<arunm at motorola.com> wrote:
> Hi all..
> Im using ABE C3.2.1 version and here Im having the following issue with
> respect to T38 fax calls.
I don't know anything about ABE, but my understanding is that you have
paid for commercial support from Digium?

You don't say what's on the other end, but various vendor and software
support for T.38 is fickle. For example, if you're trying to talk to a
Cisco device that talks T.38, look for the release notes and you'll
see a lot of caveats about situations in which T.38 is known to be
broken. And if you look at T.38 in the 1.6.x series of normal
asterisk, you'll see that there are new patches going in to improve
T.38 specifically, and SIP specifically.

That said, I don't know anything about ABE. If there is a newer
version, I recommend first upgrading to the latest version and see if
your problem has already been fixed.

Venkatesh Arun-A21466 wrote:
> Im using ABE C3.2.1 version and here Im having the following issue with
> respect to T38 fax calls. 
Please contact Digium's Support department for issues with Asterisk
Business Edition.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming at digium.com
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