[asterisk-dev] ZAP channel hang

[Tilghman Lesher]

On Friday 15 August 2008 07:34:09 Anton wrote:
> Just tired from one longstanding bug: accidently (once in a month or so)
> some ZAP channel got locked (there is power on the ZAP line but no tone)
> you may find below 2 of the channels having over 4 hours of the uptime,
> corresponding ZAP extension on channel bank - is just silent - just until
> asterisk (not zaptel) restart. This bug remains since asterisk v 1.2. I've
> been filling a bug report a long ago. If someone of the developers willing
> to address this issue, I just need to know what info should I gather from
> my working system on the next reoccurence of this case, and will fill a
> bugreport with all of the needed details.
>
> Asterisk 1.4.21.1
> Zaptel 1.4.11
>
> CLI> show channels verbose
> Channel              Context              Extension        Prio State  
> Application  Data                      CallerID        Duration Accountcode
> BridgedTo Zap/21-1             internal                                 1
> Up      Bridged Call Zap/27-1                  127             04:49:01    
>         Zap/27-1 Zap/27-1             internal             116             
>    3 Up      Dial         Zap/21r2|25|thWwoj        127            
> 04:49:08             Zap/21-1 2 active channels
> 1 active call

First, it would probably be good to ensure this is not a deadlock in Asterisk
of some sort.  Recompile with DEBUG_THREADS, and then, when this problem
occurs, run 'core show locks' and show the result.

-- 
Tilghman