[asterisk-bugs] [Asterisk 0016025]: failed to negiotate t38

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16025 
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Reported By:                jamicque
Assigned To:                kpfleming
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Project:                    Asterisk
Issue ID:                   16025
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.6.0.15 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-10-06 10:16 CDT
Last Modified:              2009-10-07 04:03 CDT
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Summary:                    failed to negiotate t38
Description: 
I found a problem today, after upgrading from 1.4.x to 1.6.0.15.
When I try to send fax using t38 with ZOIPER softphone thru asterisk to mu
VoIP operator, asterisk fails to negotiate T38.

I found that after the ZOIPER send reinvite with t38, asterisk sends this
reinvite to operator. And then Asterisk send reinvite to operator with g711
??


The asterisk LOG and cap file is in attachment.
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 (0111955) jamicque (reporter) - 2009-10-07 04:03
 https://issues.asterisk.org/view.php?id=16025#c111955 
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Hi,
what I've found is that when I'm sending fax behind NAT

ZOIPER ---NAT--> ASTERISK -NAT---> COMETREX 

fax fails.
Sending fax thru the same network ZOIPER ----> ASTERISK ---NAT --->
COMETREX fails.

localnet and externip are set.

I've attached the log. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-10-07 04:03 jamicque       Note Added: 0111955                          
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