[asterisk-bugs] [Asterisk 0013996]: [patch] Presence subscription on Cisco SIP phone needs special Cisco-styled XML

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=13996 
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Reported By:                Nugget
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13996
Category:                   Channels/chan_sip/NewFeature
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     confirmed
Asterisk Version:           SVN 
JIRA:                       SWP-202 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2008-11-30 15:13 CST
Last Modified:              2011-01-18 04:31 CST
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Summary:                    [patch] Presence subscription on Cisco SIP phone
needs special Cisco-styled XML
Description: 
Cisco phones appear to be unable to parse the existing PIDF XML being
generated by Asterisk for presence notification.  I've attached a patch
which produces well-formed (but incomplete) XML which will satisfy a Cisco
phone.  The patch as supplied will successfully render a "busy"
subscription, but does not send a subsequent "available" notification, so
presence detection only half works currently.

I suspect the next step might be to watch some CallManager SIP traffic to
identify precisely what XML tags the phone is expecting in order to
properly parse an available subscription, but I'm not in a position to do
that.  I'll continue to work with this, though, and perhaps may be able to
stumble upon the precise data the Cisco phone is looking for.
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 (0130587) MKemner (reporter) - 2011-01-18 04:31
 https://issues.asterisk.org/view.php?id=13996#c130587 
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nice work gareth! 

I'm testing this now on 1.8.2.  I did notice before that the phones were
very "noisy" with subscriptions, but did not look as closely as you have. 


As a side benefit, something I was having problems with this week (getting
BLF working with TWO 7914 sidecars / expansion modules connected) appears
to have been resolved by your patch.  
With the older patch I could get one sidecar working great, but with two
connected both sidecars kept rebooting unless I disabled subscriptions. 

Issue History 
Date Modified    Username       Field                    Change               
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2011-01-18 04:31 MKemner        Note Added: 0130587                          
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