[Asterisk-Users] Problem with Hangups

[Rich Adamson]

There's not enough info in the posts below to help. The issue "sounds"
like a problem with "disconnect supervision" (or whatever you want to
call it).

In the case where a sip phone (or other asterisk phone) answers the
call and then hangs up, the zap channel is being hung up properly due
to the sip phone hangup. (That has nothing to do with disconnect
supervision coming from the central office.)

When the call isn't answered by any phone, the zap channel depends on
disconnect supervision coming from the central office. In the US, that
signal is either: a) the dropping of tip/ring voltage to zero (as in
open circuit), or, b) reversal of the tip/ring voltage. In all cases
that I've seen in recent years, the open circuit for about 400 milliseconds
is the most common in the US.

So, to diagnose the problem properly, place a voltmeter across the tip &
ring pstn leads and watch for the open circuit when the pstn caller hangs
up. If you "see" that open circuit, then you likely have either a bug in
stable (which I don't use and can't comment on), or, your dialplan is
arranged to do something odd and not recognize the hangup.

If you want help on this, then give us a clue as to whether you can or
can't see the disconnect supervision, a copy/paste of the section of
zapata.conf that pertains to the zap channel, some indication what the
zap channel really is (eg, TDM, x100p, channel bank), CLI output when
the hangup occurs, and copy/paste of the extensions.conf that is handling
the inbound call.

------------------------
> Have you resolved the problem, I find the same problem
> 
> Thanks
> 
> 2005/8/23, Don Brearley <donbrearley at hibbing.edu>:
> > 
> > Ohhhh come on now!   Nothing?  Not even a "No idea! Good Luck!" or anything?
> > 
> > Weak :)
> > 
> > Just kidding.  Thanks just the same.
> > 
> > - Don
> > 
> > >>> donbrearley at hibbing.edu 8/22/2005 11:09 AM >>>
> > 
> > Hello,
> > 
> > I am having an issue with hangups being handled within Asterisk.  Right now, when an 
inbound call hits
> > the Asterisk box, Asterisk picks up the call just fine.
> > 
> > When the caller enters an extension to call, the Asterisk dials out on Zap/3 and rings the 
extension with
> > no problem.   If the extension is answered, there is no problem.
> > 
> > If the caller hang's up before the phone is answered, by either a person, or by voicemail, 
the hangup
> > is not detected, and the call continues as though the caller was still on the line.   It 
will continue to ring
> > the extension until voicemail is picked up, and then is finally hungup after all of the 
timeouts.  If I dont
> > have the extension setup to forward to the voicemail, it will just ring forever unless I 
force the hangup.
> > 
> > I am using kewlstart signalling, and have busydetect=yes in my zapata.conf file.
> > 
> > I am in the USA, and my indications.conf file seems to be in order.
> > 
> > I am running Asterisk 1.0.9 with the zaptel-freebsd 0.10 ZapTel driver.
> > 
> > Thank you for any insight into this issue!
> > 
> > - Don Brearley
> >  HCC Computer Services
> > 
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> 
> 
> -- 
>       Jose Miguel Aracil
>  Dpto. Seguridad y Redes
> 
>        HARD I SOFT, S.A
> Andorra La Vella - Andorra
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