[asterisk-bugs] [Asterisk 0008078]: T38 relay doesn't work between Audiocodes Tulip AC494 ATAs

[noreply at bugs.digium.com]

The following issue has been CLOSED 
====================================================================== 
http://bugs.digium.com/view.php?id=8078 
====================================================================== 
Reported By:                candlerb
Assigned To:                oej
====================================================================== 
Project:                    Asterisk
Issue ID:                   8078
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     closed
Asterisk Version:            SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 44249 
Disclaimer on File?:        No 
Request Review:              
Resolution:                 suspended
Fixed in Version:           
====================================================================== 
Date Submitted:             10-03-2006 07:32 CDT
Last Modified:              10-28-2007 08:31 CDT
====================================================================== 
Summary:                    T38 relay doesn't work between Audiocodes Tulip
AC494 ATAs
Description: 
When trying to use T38 fax relay between a pair of Audiocodes AC494's, when
fax is detected and one ATA sends a reinvite with

   m=image 5004 UDPTL t38
   a=T38FaxVersion:0
   ...

Asterisk rejects it with "488 Not acceptable here" and logs "Unsupported
SDP media type in offer: image 5004 UDPTL t38". As a result, fax relay
fails completely.

======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
related to          0007679 T.38 passthrough is not working between...
related to          0011066 Asterisk SIP Connections to systems tha...
====================================================================== 

---------------------------------------------------------------------- 
 Corydon76 - 10-28-07 08:31  
---------------------------------------------------------------------- 
jon:  since you have another bug open on this, I'm going to re-suspend this
one. 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
10-28-07 08:31  Corydon76      Note Added: 0072600                          
10-28-07 08:31  Corydon76      Status                   feedback => closed  
10-28-07 08:31  Corydon76      Resolution               reopened => suspended
======================================================================