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

[Steve Underwood]

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 at gmail.com 
> <mailto: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
>
>
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