[asterisk-bugs] [Asterisk 0014613]: Sending and receiving a fax between extensions on the same Asterisk machine fails

[Asterisk Bug Tracker]

The following issue has been RESOLVED. 
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http://bugs.digium.com/view.php?id=14613 
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Reported By:                amessina
Assigned To:                file
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Project:                    Asterisk
Issue ID:                   14613
Category:                   Applications/app_fax
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     resolved
Asterisk Version:           1.6.0.5 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 not fixable
Fixed in Version:           
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Date Submitted:             2009-03-06 02:21 CST
Last Modified:              2009-03-09 07:48 CDT
====================================================================== 
Summary:                    Sending and receiving a fax between extensions on
the same Asterisk machine fails
Description: 
When I attempt to send a fax from one extension to another on the same
Asterisk machine, the process always fails. I have no trouble sending or
receiving faxes via audio or T.38 as long as one of the endpoints is not on
my Asterisk machine.

I originate the call via AMI.  With the channel set to
Local/sendfax at mss-fax/n and the Exten set to 2240 (other proper Originate
variables are set as well--I use this same method to send faxes out of this
machine).

The following is the CLI output with debug=3:
== Manager 'fax' logged off from 127.0.0.1
-- Executing [2240 at mss-fax:1] Set("Local/sendfax at mss-fax-efcb;1",
"MAILTO=amessina") in new stack
-- Executing [2240 at mss-fax:2] Set("Local/sendfax at mss-fax-efcb;1",
"ARRAY(LOCALSTATIONID,LOCALHEADERINFO,FAXFILE)=+1 773 XXX XXXX,Messinet
Secure Services - Asterisk FAX
Gateway,/var/spool/asterisk/fax/chicago-1236326632.201.tif") innew stack
-- Executing [2240 at mss-fax:3] ReceiveFAX("Local/sendfax at mss-fax-efcb;1",
"/var/spool/asterisk/fax/chicago-1236326632.201.tif") in new stack
[Mar  6 02:08:53] WARNING[20982]: app_fax.c:439 transmit_audio: It looks
like we hung. Aborting.
[Mar  6 02:08:53] WARNING[20982]: app_fax.c:173 phase_e_handler: Error
transmitting fax. result=49: The call dropped prematurely.
[Mar  6 02:08:53] WARNING[20982]: app_fax.c:618 transmit: Transmission
error
== Spawn extension (mss-fax, 2240, 3) exited non-zero on
'Local/sendfax at mss-fax-efcb;1'
-- Executing [h at mss-fax:1] Hangup("Local/sendfax at mss-fax-efcb;1", "") in
new stack
== Spawn extension (mss-fax, h, 1) exited non-zero on
'Local/sendfax at mss-fax-efcb;1'
[Mar  6 02:08:53] WARNING[20981]: app_fax.c:173 phase_e_handler: Error
transmitting fax. result=49: The call dropped prematurely.
[Mar  6 02:08:53] WARNING[20981]: app_fax.c:618 transmit: Transmission
error
== Spawn extension (mss-fax, sendfax, 2) exited non-zero on
'Local/sendfax at mss-fax-efcb;2'
-- Executing [h at mss-fax:1] Hangup("Local/sendfax at mss-fax-efcb;2", "") in
new stack
== Spawn extension (mss-fax, h, 1) exited non-zero on
'Local/sendfax at mss-fax-efcb;2'
====================================================================== 

---------------------------------------------------------------------- 
 (0101365) file (administrator) - 2009-03-09 07:48
 http://bugs.digium.com/view.php?id=14613#c101365 
---------------------------------------------------------------------- 
This is a known limitation with the way chan_local and app_fax are
interacting. The only suggestion is to make sure internal_timing is enabled
in asterisk.conf under options and that you have a Dahdi timing source. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-03-09 07:48 file           Note Added: 0101365                          
2009-03-09 07:48 file           Status                   new => resolved     
2009-03-09 07:48 file           Resolution               open => not fixable 
2009-03-09 07:48 file           Assigned To               => file            
======================================================================