[asterisk-bugs] [Asterisk 0016750]: Audio loop reports T38 switchover but t38state != T38_STATE_NEGOTIATED

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=16750 
====================================================================== 
Reported By:                iskatel
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   16750
Category:                   Applications/app_fax
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.6.2.1 
JIRA:                       SWP-839 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2010-02-02 01:32 CST
Last Modified:              2010-06-11 08:50 CDT
====================================================================== 
Summary:                    Audio loop reports T38 switchover but t38state !=
T38_STATE_NEGOTIATED
Description: 
SendFax not working with t38

Path of call
Asterisk(1.1.1.1) -> Cisco AS5300(2.2.2.2) -> PSTN

app_fax.c was applied from
http://svnview.digium.com/svn/asterisk/branches/1.6.2?view=revision&revision=225871

After re-INVITE has been received from Cisco, asterisk sends 200 OK, then
ERROR appears and asterisk breaks the call. ReceiveFax works.    

====================================================================== 

---------------------------------------------------------------------- 
 (0123282) areversat (reporter) - 2010-06-11 08:50
 https://issues.asterisk.org/view.php?id=16750#c123282 
---------------------------------------------------------------------- 
Ok I tracked down the issue to this : chan_local doesn't have a queryoption
method. Therefore it cannot report whether or not it is in t.38 mode. The
quick fix is to not use a local channel.

The long fix would be to implement the queryoption function in chan_local
and make it report the t.38 status of the underlying sip channel. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-06-11 08:50 areversat      Note Added: 0123282                          
======================================================================