[asterisk-dev] ZAP channel hang

[Anton]

My PBX work just as bridging FXS to FXS or SIP to FXS or IAX 
to FXS (depends from origin of the call) - T1 card 
connected to the channel bank and second CB is XORCOMM USB 
CB. extensions are configured as FXOKS and connected to the 
regular prones for the regular office work (mostly call 
transfer, call pickup, no conferences and no DISA, no 
meetme) - everything is very basic. Looks CB can reliably 
detect phone hangup, but is it's the case than asterisk 
cannot handle it sometimes? Anyway next reoccurence will 
show if there is any possible lock or no. BTW - the same 
situation persist among any zaptel device - XORCOMM USB 
ChannelBank behave exactly the same as the pair of 
T1->Rhino T1-ChannelBank, so it's equipment independant, 
just it must me a zaptel device. 


On Saturday 16 August 2008 01:21, Paradise Dove wrote:
> Hi,
> I have the same problem and i'm sure that it's not a
> deadlock and a simple "soft hangup" on one of the hung
> channels will kick them off! i can reproduce  it easily,
> one way is to call your box from outside on fxo channels
> and make your scripts to run DISA application and give
> you an extension tone with outside dialing permission,
> now just dial a number using another fxo channel. with
> this scenario in more than 80% of times after ending the
> conversation conversation, both bridged fxo channels will
> remain connected for ever!!
> the other way is to call a number via fxo channels and
> then hold the call and call another number via fxo
> channels and then bridge both calls together (transfer).
> also in this scenario the bridged fxo channels more than
> 60% of times will remain hung. the same problem exists if
> you bridge (transfer) two incoming calls from fxo
> channels.
> i have no idea how to fix this problem!? :(
>
> i hope this help,
> thanks
> paradise
>
> On Fri, Aug 15, 2008 at 7:05 PM, Anton 
<anton.vazir at gmail.com> wrote:
> > Done, waiting for reoccurence...
> >
> > On Friday 15 August 2008 19:01, Tilghman Lesher wrote:
> >> 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.
> >
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