[asterisk-bugs] [Asterisk 0012110]: CCM sends multiple INVITEs which causes MusicOnHold to execute on a channel

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12110 
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Reported By:                blitzrage
Assigned To:                kpfleming
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Project:                    Asterisk
Issue ID:                   12110
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.18 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             02-29-2008 16:27 CST
Last Modified:              03-11-2008 23:35 CDT
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Summary:                    CCM sends multiple INVITEs which causes MusicOnHold
to execute on a channel
Description: 
Found this for a client who is using a CCM gateway and terminating calls to
SIP phones attached to Asterisk.

I've added some traces from the console with history dumped. You'll notice
in the good calls that you get 3 or 4 INVITE,100,200,ACK loops, then the
CCM stops sending the invites, and the call remains setup.

In 1.2.26.2, you'll see that happen, with the Starting Music on
Hold/Stopping Music on Hold each time that loop happens. On 1.2 though, the
music on hold never actually is heard. On 1.4, when the same thing happens,
the music on hold actually is executed and does not stop.

This is preventing him from moving to 1.4.
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Relationships       ID      Summary
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related to          0011475 Asterisk replies with a 488 to a Re-Inv...
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---------------------------------------------------------------------- 
 kreator - 03-11-08 23:35  
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Just uploaded the two requested captures grabbed with tcpdump.
     tcpdump.remoteagent-badcall-unpatched.cap <-- 1.4.18
     tcpdump.remoteagent-badcall-1.2.26.2.cap  <-- 1.2.26.2

Observed behaviour:
 - Agent (called party) picks up phone and hears MOH (10.132.252.55)
   Called party does not hear the calling party
 - Calling party hears the called party just fine and does not hear any
MOH
 - Call stays connected until either party disconnects.

Elements:
 10.132.253.245 <-- Asterisk
 10.132.252.55  <-- Cisco 7940 Phone registered to Asterisk
 10.132.20.10   <-- CCM 5.1 Publisher 

Issue History 
Date Modified   Username       Field                    Change               
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03-11-08 23:35  kreator        Note Added: 0083794                          
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