[asterisk-users] 1.6.1 app_fax: WARNING T.30 ECM carrier not found ??

[sean darcy]

David Backeberg wrote:
> On Mon, May 4, 2009 at 10:52 PM, sean darcy <seandarcy2 at gmail.com> wrote:
>> Receiving a fax with 1.6.1:
>>
>>   == Spawn extension (incoming-pstn-line, fax, 1) exited non-zero on
>> 'DAHDI/4-1'
>>     -- Executing [fax at incoming-pstn-line:1] NoOp("DAHDI/4-1", "Fax
>> Detected") in new stack
>>     -- Executing [fax at incoming-pstn-line:2] Goto("DAHDI/4-1",
>> "incoming-fax,s,1") in new stack
>>     -- Goto (incoming-fax,s,1)
>>     -- Executing [s at incoming-fax:1] Set("DAHDI/4-1",
>> "FAXFILE=/var/spool/asterisk/fax/20090504_1602-0") in new stack
>>     -- Executing [s at incoming-fax:2] ReceiveFAX("DAHDI/4-1",
>> "/var/spool/asterisk/fax/20090504_1602-0.tif") in new stack
>>     -- Starting simple switch on 'DAHDI/1-1'
>>     -- Remote UNIX connection
>>     -- Hungup 'DAHDI/1-1'
>> [2009-05-04 16:02:39] WARNING[12989]: app_fax.c:128 span_message:
>> WARNING T.30 ECM carrier not found
>> [2009-05-04 16:02:40] WARNING[12989]: app_fax.c:128 span_message:
>> WARNING T.30 ECM carrier not found
>> [2009-05-04 16:02:40] WARNING[12989]: app_fax.c:128 span_message:
>> WARNING T.30 ECM carrier not found
>> [2009-05-04 16:02:46] WARNING[12989]: app_fax.c:128 span_message:
>> WARNING T.30 ECM carrier not found
>> [2009-05-04 16:02:46] WARNING[12989]: app_fax.c:128 span_message:
>> WARNING T.30 ECM carrier not found
>>     -- Executing [s at incoming-fax:3] Hangup("DAHDI/4-1", "") in new stack
>>
>> ECM - error correction mode ( right?) - but the fax is received OK. Any
>> reason to worry? Anything to do?
> 
> Since you are receiving a fax over an analog line, you can set up
> MixMonitor() or Monitor() to record the fax, play it back, listen for
> line noise or static or something else that may be happening that's
> throwing those warnings from SpanDSP.
> Obviously if you're getting a fax you're not as worried as if this
> caused the fax to drop. Once you have a recording of the transmission
> and the logs of what happens you can submit it to the SpanDSP project
> to see what they think.
> 
> Incidentally, how verbose do you have to set your CLI to get output
> that lists the warnings?
> 

Just asterisk -r

It shows:

Verbosity is at least 3

sean