No subject

600
I'm subscribed to a "buddy" on my Polycom phone. Periodically I'd get this
error: 'Incoming call: Got SIP response 500 "Internal Server Error" back
from 10.1.1.200'.

Additional Description

We have six(6) Polycom 601 attenendant consoles monitoring roughly
forty(40) Polycom 430 phones each for a total of one hundred (100) or so
watchers/hints.

To reproduce the behaviour you need only interrupt chan_sip via reload, or
an Asterisk restart.  Once this has been done, presence notifications sent
to the phones will no longer take place properly.  It is unclear as to
whether this problem is due to the Asterisk system not sending the right
messages, or the Polycom not responding properly to a properly formatted
message.  But, after a while, the phones will start sending messages back
in response to messages from Asterisk that say "Internal Server Error". 
One thing is for certain.  After the channel is interrupted, by reload or
restart, presence no longer works.
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---------------------------------------------------------------------- 
 s0l4rb03 - 09-18-07 09:14  
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601 rebooted while someone was on hold and a page was being made.  All
members of the page conference were stranded in the conferences.  We were
able to kill the conferences and release the members without a reboot of
the watched phones.

This is not exclusive behaviour.  The reload and broken watching may
contribute to the reboot of the 601 . . . may not.  The resulting state was
different than when a reload preceeds the 601 reboot.

The reboot of the 601 seems to be a failover watchdog issue on the
Polycom.  We are investigating it as a seperate issue.  Maybe we can cure
the reboots.

But, the Internal Server Error is still, at this point, reproducible. 

Issue History 
Date Modified   Username       Field                    Change               
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09-18-07 09:14  s0l4rb03       Note Added: 0070728                          
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