[Asterisk-bugs] [Asterisk 0009660]: Asterisk can't establish dialtone after brief hangup

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=9660 
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Reported By:                mmacvicar
Assigned To:                
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Project:                    Asterisk
Issue ID:                   9660
Category:                   Core/General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.4 
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        No 
Request Review:              
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Date Submitted:             05-03-2007 14:08 CDT
Last Modified:              07-06-2007 09:29 CDT
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Summary:                    Asterisk can't establish dialtone after brief hangup
Description: 
Asterisk can't establish dialtone after brief hangup

When I press the hook-switch (i.e., receiver button) and then let go to
make a new call, the phone doesn't establish dialtone unless I hold it down
for for 4-5 seconds.

Reproducible Steps:
1. Pick up handset and establish dialtone.
2. Press the hook-switch for 1-3 seconds and let go

After letting go of the hookswitch, the sound on the line is silent for a
moment then a computerized squeal is heard briefly and silence continues.
The asterisk console displays the following messages when "core set verbose
10":
--------------------
    -- Starting simple switch on 'Zap/7-1'
    -- Hungup 'Zap/7-1'
[May  3 11:31:45] WARNING[2241]: chan_zap.c:1616 zt_set_hook: zt hook
failed: Device or resource busy
--------------------

We are using analog Astra Telecom 480e phones connected through internal
wiring to TDM400P cards in our asterisk server.


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---------------------------------------------------------------------- 
 marco - 07-06-07 09:29  
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I can confirme:
Card: TDM 400P
Asterisk version : 1.4.0
Zaptel version: 1.4.1

the same problem here,but the probelm seems to randomly reproducible:
    -- Starting simple switch on 'Zap/2-1'
    -- Hungup 'Zap/2-1'
    -- Starting simple switch on 'Zap/2-1'
    -- Hungup 'Zap/2-1'
    -- Starting simple switch on 'Zap/2-1'
    -- Hungup 'Zap/2-1'
[Jul  6 16:17:06] WARNING[8649]: chan_zap.c:1642 zt_set_hook: zt hook
failed: Device or resource busy
    -- Starting simple switch on 'Zap/2-1'
    -- Hungup 'Zap/2-1'

For me it is reproducible when i press the hook very quickly after hanging
up.
It's like if asterisk detect the hangup hook with a small delay and then
had some problem to establish dialtone until you give it the time to do
so(holding it down for for 4-5 seconds).
Sometimes really boring. 

Issue History 
Date Modified   Username       Field                    Change               
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07-06-07 09:29  marco          Note Added: 0066587                          
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