[asterisk-bugs] [Asterisk 0016983]: alarm state not properly maintained on analog channels

[Asterisk Bug Tracker]

The following issue has been UPDATED. 
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https://issues.asterisk.org/view.php?id=16983 
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Reported By:                tzafrir
Assigned To:                rmudgett
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Project:                    Asterisk
Issue ID:                   16983
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Target Version:             1.6.2.15
Asterisk Version:           SVN 
JIRA:                       SWP-1048 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 249801 
Request Review:              
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Date Submitted:             2010-03-08 06:54 CST
Last Modified:              2010-09-17 09:56 CDT
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Summary:                    alarm state not properly maintained on analog
channels
Description: 
The DAHDI_ALARM and DAHDI_NOALARM events update inalarm in the pvt_analog
rather than the one in the generic chan_dahdi one. However the generic
chan_dahdi one is used in at least two places:

1. available() - checked before calling the tech-specific available()
2. 'dahdi hsow channel NN' - the line 'InAlarm:'


After 'dahdi restart'

(Logging: verbose 4, debug 2)


morgan*CLI> dahdi show channel 19
 ...
InAlarm: 0
 ...


(Unplugging cable)
[Mar  8 14:34:53] DEBUG[2123]: chan_dahdi.c:10756 do_monitor: Monitor
doohicky got event Alarm on channel 19
[Mar  8 14:34:53] DEBUG[2123]: sig_analog.c:3257 analog_handle_init_event:
channel (19) - signaling (5) - event (ANALOG_EVENT_ALARM)
[Mar  8 14:34:53] WARNING[2123]: chan_dahdi.c:6955 handle_alarms: Detected
alarm on channel 19: Red Alarm

morgan*CLI> dahdi show channel 19
 ...
InAlarm: 0
 ...

(Plugging cable back)

[Mar  8 14:37:48] DEBUG[2123]: chan_dahdi.c:10756 do_monitor: Monitor
doohicky got event No more alarm on channel 19
[Mar  8 14:37:48] DEBUG[2123]: sig_analog.c:3257 analog_handle_init_event:
channel (19) - signaling (5) - event (ANALOG_EVENT_NOALARM)
[Mar  8 14:37:48] NOTICE[2123]: sig_analog.c:3364
analog_handle_init_event: Alarm cleared on channel 19

morgan*CLI> dahdi show channel 19
 ...
InAlarm: 0
 ...

Now let's try to call through that channel:

morgan*CLI> originate DAHDI/19/600 application Echo
[Mar  8 14:42:43] NOTICE[2119]: channel.c:4402 __ast_request_and_dial:
Unable to request channel DAHDI/18/600

[Mar  8 14:45:13] DEBUG[2119]: sig_analog.c:656 analog_available:
analog_available 19
[Mar  8 14:45:13] NOTICE[2119]: channel.c:4402 __ast_request_and_dial:
Unable to request channel DAHDI/19/600

Now let's take a different port. which has not been plugged at 'dahdi
restart' time:

morgan*CLI> dahdi show channel 18
 ...
InAlarm: 1
 ...

(Plug in)
[Mar  8 14:41:32] DEBUG[2123]: chan_dahdi.c:10756 do_monitor: Monitor
doohicky got event No more alarm on channel 18
[Mar  8 14:41:32] DEBUG[2123]: sig_analog.c:3257 analog_handle_init_event:
channel (18) - signaling (5) - event (ANALOG_EVENT_NOALARM)
[Mar  8 14:41:32] NOTICE[2123]: sig_analog.c:3364
analog_handle_init_event: Alarm cleared on channel 18

morgan*CLI> dahdi show channel 18
 ...
InAlarm: 1
 ...


Now let's try to call through that channel:

morgan*CLI> originate DAHDI/18/600 application Echo
[Mar  8 14:42:43] NOTICE[2119]: channel.c:4402 __ast_request_and_dial:
Unable to request channel DAHDI/18/600

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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-09-17 09:56 lmadsen        Target Version            => 1.6.2.15        
2010-09-17 09:56 lmadsen        Description Updated                          
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