[asterisk-bugs] [Asterisk 0018160]: Music on hold sometimes works, sometimes doesn't

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18160 
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Reported By:                gnarf
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18160
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.2.13 
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:             2010-10-19 03:16 CDT
Last Modified:              2010-10-19 03:55 CDT
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Summary:                    Music on hold sometimes works, sometimes doesn't
Description: 
I'm using Cisco 7960s on my network, and ever since I upgraded to 1.6.2.13
(from 1.4) I've been having issues with calls and hold.  It seems that the
hold/resume feature SOMETIMES works to trigger MOH/stop MOH however, most
of the time, I end up with calls that are on hold with no music, or calls
that are on hold with music that can't resume.

I have attached a sip debug showing 3 attempts to hold / resume, the first
doesn't start MOH, the second does, and the third doesn't stop it.
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 (0128184) gnarf (reporter) - 2010-10-19 03:55
 https://issues.asterisk.org/view.php?id=18160#c128184 
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the second sip log (with call start) shows a full conversation... Note that
the 105 INVITE actually starts music on hold, the 103 INVITE doesn't (but
should), and none of them ever stop it.... 

Issue History 
Date Modified    Username       Field                    Change               
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2010-10-19 03:55 gnarf          Note Added: 0128184                          
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