[Freeswitch-users] Help with rxfax debug "T4 expires in phase T30_PHASE_B_RX"

[Sadhika Sharma]

Anybody having any idea about this?

On Fri, Apr 15, 2011 at 7:36 PM, Sadhika Sharma <sadhika at 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20110419/4f893497/attachment.html