[asterisk-bugs] [Asterisk 0019105]: T38 passthrough does not work with Zoiper zoftphone and Eutelia provider (both Origination and Termination does work)

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=19105 
====================================================================== 
Reported By:                darkbasic
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   19105
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.8.3.2 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2011-04-12 09:51 CDT
Last Modified:              2011-04-12 11:18 CDT
====================================================================== 
Summary:                    T38 passthrough does not work with Zoiper zoftphone
and Eutelia provider (both Origination and Termination does work)
Description: 
I successfully get working T38 Termination and T.38 Origination with
asterisk 1.8 and Eutelia. Unfortunately the most important thing (T.38
passthrough) does not work :(
I can read "Receiving page 1" in the fax but it does not receive
anything.
I am using latest Zoiper softphone linux version to send the fax. Is there
a better T.38 softphone which I can use?

I attached full log.
====================================================================== 

---------------------------------------------------------------------- 
 (0133656) mnicholson (administrator) - 2011-04-12 11:18
 https://issues.asterisk.org/view.php?id=19105#c133656 
---------------------------------------------------------------------- 
This still does not look like a bug in asterisk.  Please upload a pcap file
of the fax session including the udptl stream.  Be advised: the pcap file
will include all network traffic on the system by default, you may want to
edit it to only include the sip, udptl, and rtp traffic using wireshark
before uploading it (have wireshark filter on 't38 || t30 || sip || rtp'). 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2011-04-12 11:18 mnicholson     Note Added: 0133656                          
======================================================================