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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Relationships       ID      Summary
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related to          0005164 "Presence" subscription cause...
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 mlegas - 10-10-07 10:38  
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the same pb appears with Aastra phones which report the right error:
<--- SIP read from 10.65.0.178:5060 --->
SIP/2.0 500 CSeq Number Out of order
Via: SIP/2.0/UDP
194.50.29.xxxx:5060;branch=z9hG4bK50dbdf8b;rport=5060;received=194.50.29.xxx
From: <sip:4900 at 194.50.29.xxxx:5060>;tag=as1d319de5
To: Test Aastra <sip:0178164908 at 194.50.29.xxxx:5060>;tag=8f78e7f670
Call-ID: 00e0780be94b3304
CSeq: 105 NOTIFY
Server: Aastra 55i/2.1.0.2145
Content-Length: 0 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
10-10-07 10:38  mlegas         Note Added: 0071774                          
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