[asterisk-bugs] [DAHDI-linux 0017318]: [patch] FXS Polarity Reversal on Hangup or Answer

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17318 
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Reported By:                armeniki
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   17318
Category:                   NewFeature
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
JIRA:                        
Reviewboard Link:           https://reviewboard.asterisk.org/r/797/ 
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Date Submitted:             2010-05-11 06:12 CDT
Last Modified:              2010-07-22 18:14 CDT
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Summary:                    [patch] FXS Polarity Reversal on Hangup or Answer
Description: 
FXS lines normally connect to a telephone.  However, when FXS lines are
routed to an external PBX or Key System to act as "external" or "CO" lines,
it is extremely difficult, if not impossible for the external PBX to know
when the call has been disconnected without receiving a polarity reversal
on the line.

DAHDI/Asterisk should have a feature to allow a setting someplace, perhaps
in chan_dahdi.conf, to allow a FXS channel to provide a polarity reversal
on channel hangup.
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 (0124885) svnbot (reporter) - 2010-07-22 18:14
 https://issues.asterisk.org/view.php?id=17318#c124885 
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Repository: asterisk
Revision: 278809

U   trunk/channels/chan_dahdi.c
U   trunk/channels/sig_analog.c
U   trunk/channels/sig_analog.h
U   trunk/configs/chan_dahdi.conf.sample

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r278809 | alecdavis | 2010-07-22 18:14:49 -0500 (Thu, 22 Jul 2010) | 20
lines

Support FXS module Polarity Reversal on remote party Answer and Hangup 

FXS lines normally connect to a telephone. However, when FXS lines are
routed
to an external PBX or Key System to act as "external" or "CO" lines, it is
extremely difficult, if not impossible for the external PBX to know when
the call has been disconnected without receiving a polarity reversal on
the line.

Now using answeronpolarityswitch and hanguponpolarityswitch keywords that
previously were used only for FXO ports, now applies like functionality
for
an FXS port, but from the connected equipment's point of view.

(closes issue https://issues.asterisk.org/view.php?id=17318)
Reported by: armeniki
Patches: 
      fxs_linepolarity.diff5.txt uploaded by alecdavis (license 585)
Tested by: alecdavis

Review: https://reviewboard.asterisk.org/r/797/


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http://svn.digium.com/view/asterisk?view=rev&revision=278809 

Issue History 
Date Modified    Username       Field                    Change               
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2010-07-22 18:14 svnbot         Checkin                                      
2010-07-22 18:14 svnbot         Note Added: 0124885                          
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