[asterisk-bugs] [Asterisk 0019322]: SIP CANCEL is broken when phone is not registered to asterisk (sip friend and/or sip user)

[Asterisk Bug Tracker]

The following issue has been UPDATED. 
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https://issues.asterisk.org/view.php?id=19322 
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Reported By:                Artem
Assigned To:                
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Project:                    Asterisk
Issue ID:                   19322
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.8.4 
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:             2011-05-18 16:48 CDT
Last Modified:              2011-05-18 17:12 CDT
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Summary:                    SIP CANCEL is broken when phone is not registered to
asterisk (sip friend and/or sip user)
Description: 
I have discovered a bug while playing with asterisk and with the embedded
sip client of an android mobile phone.

Canceling a call is broken when the mobile phone is not registered to
asterisk.

When calling from the android phone and the other party picks up the phone
everything works just fine. But when the other party does not pick up the
phone and I hangup the call on the mobile then the other phone will never
stop ringing.

This problem does not occur when the mobile phone is registered to
asterisk.

Here is the relevant configuration of sip.conf:

[2005]
type=friend
defaultuser=2005
transport=udp
fromuser=2005
context=internal
host=dynamic
fromdomain=xxxxxxx
secret=xxxxxxx
qualify=yes
nat=yes
directmedia=no
disallow=all
allow=speex
allow=alaw
allow=ulaw
allow=gsm
allow=g729
allow=h264
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---------------------------------------------------------------------- 
 (0135133) bbryant (administrator) - 2011-05-18 17:12
 https://issues.asterisk.org/view.php?id=19322#c135133 
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I have modified this bug report in response to a query from this reporter
on IRC. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2011-05-18 17:12 bbryant        Note Added: 0135133                          
2011-05-18 17:12 bbryant        Summary                  SPICANCEL => SIP CANCEL
is broken when phone is not registered to asterisk (sip friend and/or sip user)
2011-05-18 17:12 bbryant        Description Updated                          
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