[asterisk-bugs] [Asterisk 0015138]: Hangup()-command in dialplan does not clear the channel

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15138 
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Reported By:                jonaskellens
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15138
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.24 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-05-17 03:47 CDT
Last Modified:              2009-05-18 08:33 CDT
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Summary:                    Hangup()-command in dialplan does not clear the
channel
Description: 
I have a TDM410P-card with 3 FXO-modules.
When I call the number of one of these PSTN-lines that terminate in an
FXO-module of my Asterisk-server, the call is excepted.

In the weekend there's an voicemail-system that states that the store is
closed.
When the voicemail-message is recorded, Asterisk needs to hang up the
line. I use the Hangup()-command in my dialplan.

But the line is not hanged up. There is no tone send to the caller that
gives the impression that the call was hung up by Asterisk. There is just
silence...

When I look at the time at my cellphone-display, that indicates the
duration of the call, it just keeps on counting...
The call is only really terminated when the caller puts down his phone and
ends the call. Only then is the channel cleared.

So : with my cellphone I call the phone number of the company. In the
weekend there is a voicemail. I leave a message and press "#". I here the
thankyou-message and then there is silence...

To Asterisk, the conversation has ended. Call Detail recording stops
(end-time of the conversation is when Asterisk initiates the
hangup()-command).
To me, and my cellphone, the call is still in progress... it finally times
out at about 2 minutes...
At the CLI, it's then when I see that the DAHDI-channel has cleared.
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---------------------------------------------------------------------- 
 (0104916) davidw (reporter) - 2009-05-18 08:33
 https://issues.asterisk.org/view.php?id=15138#c104916 
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You are calling from a cellphone.  PTTs typically do implement called party
clearing for calls from cellphones.  It is assumed that people want to
clear promptly, the phone can be carried to a suitable place, and you can't
have parallel cell phones on a line.

Simple FXO lines use a low resistance on the line to answer and return to
the high resistance state to clear; they don't use tone signalling for
seize or clear.

Note is is not a telco fault, but a feature.  It is done quite
deliberately. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-05-18 08:33 davidw         Note Added: 0104916                          
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