VoIP Mailing List Archives

[mdiehlenator at gmail.com]

Hi all,

For the most part, we are finding that Fax for Asterisk works pretty
well. However, we have seen some wierdness that we'd like to try to
fix.

Once in a while, we will get a partial result report for a given fax
but when we look at the actual .tiff image, it looks to be complete.
This is causing our users to not get a positive acknowledgement when
they send the fax.

Is there anything we can do to mitigate this?

Mike.

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[steveu at coppice.org]

On 03/11/2014 12:36 AM, Mike Diehl wrote:

[webaccounts at jgoettg...]

One of my customers had this problem. The cause turned out to be the other side (one particular
remote station).

In addition to res_fax, I also installed the Hylafax/iaxmodem combo. Hylafax has the advantage
of giving nice logs about the signaling. This way it was easy to see what was going on, but I
have forgotten the details meanwhile.

jg

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[admin at tootai.net]

Hi

Le 10/03/2014 17:36, Mike Diehl a écrit :

[mdiehlenator at gmail.com]

Steve,


I BELIEVE the fax is complete because the fax image is a form that appears to only be a single page.


But, since FFA isn't providing acknowledgement, the sending fax machine is resending the document multiple times!


Mike.



On Mon, Mar 10, 2014 at 12:49 PM, Steve Underwood <steveu@coppice.org (steveu@coppice.org)> wrote:

[steveu at coppice.org]

Hi Mike,

If the sending machine keeps trying it might be the call has been hung
up by asterisk before its own acknowledgement message has finished being
sent. There have been bugs like this in the past, and people can be
pretty casual about making changes which hang up aggressively. A FAX
system should really wait for the final DCN message before
disconnecting, to ensure both sides have seen what they need. Spandsp
does that, but I am not sure about FFA.

Regards,
Steve

On 03/11/2014 03:03 AM, Mike Diehl wrote:

[mdiehlenator at gmail.com]

Steve,


I appreciate you elaborating on my problem.  I don't suppose this is as easy as putting a wait(3) in my dial plan before hangup.....?  (Didn't think so.)


Aside from checking (and hoping) for a newer version of FFA that fixes this issue, I guess there's not much I can do, then.


Thanks again.

Mike.



On Tue, Mar 11, 2014 at 12:27 AM, Steve Underwood <steveu@coppice.org (steveu@coppice.org)> wrote: