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

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=16983 
====================================================================== 
Reported By:                tzafrir
Assigned To:                rmudgett
====================================================================== 
Project:                    Asterisk
Issue ID:                   16983
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     closed
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:              
Resolution:                 fixed
Fixed in Version:           
====================================================================== 
Date Submitted:             2010-03-08 06:54 CST
Last Modified:              2010-09-20 18:18 CDT
====================================================================== 
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

====================================================================== 

---------------------------------------------------------------------- 
 (0127163) svnbot (reporter) - 2010-09-20 18:18
 https://issues.asterisk.org/view.php?id=16983#c127163 
---------------------------------------------------------------------- 
Repository: asterisk
Revision: 287693

_U  trunk/
U   trunk/channels/chan_dahdi.c

------------------------------------------------------------------------
r287693 | rmudgett | 2010-09-20 18:18:42 -0500 (Mon, 20 Sep 2010) | 16
lines

Merged revisions 287683 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.8

........
  r287683 | rmudgett | 2010-09-20 18:14:42 -0500 (Mon, 20 Sep 2010) | 9
lines
  
  The inalarm flag was not set in sig_analog struct if the port is
initially in alarm.
  
  Fixed initial inalarm value for sig_analog ports.
  
  Along with -r261007, this gets the inalarm flag in sync with chan_dahdi
  for sig_analog ports.
  
  (closes issue https://issues.asterisk.org/view.php?id=16983)
........

------------------------------------------------------------------------

http://svn.digium.com/view/asterisk?view=rev&revision=287693 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-09-20 18:18 svnbot         Checkin                                      
2010-09-20 18:18 svnbot         Note Added: 0127163                          
======================================================================