Hi,

Once again I am stating my problem:
I am using freeswitch for sending and receiving faxes. Incoming and outgoing faxes goes through seperate PSTN lines.
Whenever a call lands on freeswitch machine, I execute rxfax(). I get about 5000 fax calls every month, out of which about 800 transmissions fail due to hangup cause 548 'Disconnected after permitted retries'

Logs of a failed attempt are posted here. (This log does not explicitly contain the failed rxfax() execution. There are other freeswitch operations happening simultaneously.)

Thanks in advance for your help.
Sadhika

On Tue, Apr 19, 2011 at 7:49 PM, Madovsky <infos@madovsky.org> wrote:
JIRA
----- Original Message -----
Sent: Tuesday, April 19, 2011 10:13 AM
Subject: Re: [Freeswitch-users] Help with rxfax debug "T4 expires in phaseT30_PHASE_B_RX"

Is there a better way to attach logs? I am not sure if attaching them with email is good enough.
Also how do i prefix uuid to mod_spandsp logs?

On Tue, Apr 19, 2011 at 7:15 PM, Sadhika Sharma <sadhika@gmail.com> wrote:
Thanks Steve for replying,

I will explain the problem in clearer terms. Whenever a call lands on freeswitch machine, I exceute rxfax(). I get about 5000 fax calls every month, out of which about 800 transmissions fail due to hangup cause 548 'Disconnected after permitted retries' Complete log is attached.


On Tue, Apr 19, 2011 at 6:31 PM, Steve Underwood <steveu@coppice.org> wrote:
Sadhika,

If you post only a fragment of a log, and describe only half of what
happens, people will generally ignore what you post. I guess they don't
like being treated like they are mind readers.

The error seems pretty clear. You aren't getting anything from the far
end. Since you give no clue as to what you are doing, beyond trying to
receive FAX, that's about as detailed an analysis as you are going to get.

Steve


On 04/19/2011 05:43 PM, Sadhika Sharma wrote:
> Anybody having any idea about this?
>
> On Fri, Apr 15, 2011 at 7:36 PM, Sadhika Sharma <sadhika@gmail.com
> <mailto:sadhika@gmail.com>> wrote:
>
>     Hi,
>
>     I need help in debugging hangup cause 548, 'Disconnected after
>     permitted retries' while attempting rxfax().
>
>     Logs show that T4 expires in phase T30_PHASE_B_RX.
>     T30 PHASE B concerns exchange of DIS/DCS messages. After sending
>     DIS, mod spandsp keeps waiting for DCS and exhausts its retries.
>
>     Please guide me how to debug the root cause of loss of DCS
>     message. Logs are mentioned below:
>
>     2011-03-07 15:53:48.675180 [DEBUG] switch_ivr.c:557
>     OpenZAP/4:1/43851609 Command Execute
>     rxfax(/srv/fax/in/fcf15a4c-48a4-11e0-919e-7bf53bcc3f81.tiff)
>     2011-03-07 15:53:53.334614 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     Send complete in phase T30_PHASE_B_TX, state 17
>     2011-03-07 15:53:53.335619 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     DIS:
>     2011-03-07 15:53:53.335619 [DEBUG] mod_spandsp_fax.c:293 FLOW
>     T.30   .... ...0= Store and forward Internet fax (T.37): Not set
>     2011-03-07 15:53:53.335619 [DEBUG] mod_spandsp_fax.c:293 FLOW
>     T.30   .... .0..= Real-time Internet fax (T.38): Not set
>     :
>     :
>     2011-03-07 15:53:53.875238 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     Start T4
>     2011-03-07 15:53:53.895315 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     HDLC signal status is Carrier up (-2) in state 17
>     2011-03-07 15:53:53.915402 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     HDLC signal status is Carrier down (-1) in state 17
>     2011-03-07 15:53:57.335032 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     T4 expired in phase T30_PHASE_B_RX, state 17
>     2011-03-07 15:53:57.335032 [DEBUG] mod_spandsp_fax.c:293 FLOW T.30
>     Retry number 1
>
>
>     Please guide me how to debug the root cause of loss of DCS message.
>     Thanks,
>     Sadhika
>
>
>
>
> --
> Sadhika
>
>
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--
Sadhika



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Sadhika

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--
Sadhika