[asterisk-bugs] [Asterisk 0011702]: Misbehaviur of chan_zap in comparision to any regular PBX or IP telephone

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A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11702 
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Reported By:                vazir
Assigned To:                tzafrir
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Project:                    Asterisk
Issue ID:                   11702
Category:                   Channels/chan_zap
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.17 
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:             01-07-2008 11:32 CST
Last Modified:              01-07-2008 12:55 CST
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Summary:                    Misbehaviur of chan_zap in comparision to any
regular PBX or IP telephone
Description: 
1) 2nd line should be started only if channel already in "established"
state (means user picked up on another side) - but asterisk always start it
- even if you just call neighbouring extension. While calling another
extension - if noone yet picked the phone - any flash should just hangup
the call and start over the line again.

2) Remote ring should stop imediatelly when system receives hangup from
calling line - it does not. - You hangup the line - but hear remote still
ringing for 0.5 - 1 second. This leads to errors mentioned in 11701
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---------------------------------------------------------------------- 
 vazir - 01-07-08 12:55  
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Guys, Just imagine: 
You are small company having a few city lines, 
dumb secretary calls remote number where noone answers, she flases.
Initiating 2nd call and truly believing that she hanged up. Call stuck.
This line is busy. She makes lots of calls and speaks long. Line might be
busy for a long time and noone will be able to call in or call out. This is
the live case I met. 

Issue History 
Date Modified   Username       Field                    Change               
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01-07-08 12:55  vazir          Note Added: 0076437                          
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