asterisk users - Apr 2006 - Sangoma A200 preventing Zap channels from disconnecting immediately after PSTN line hangs up (getting empty voicemails)

As far as I can tell, after discussing this matter with other asterisk
users in my area, my telco _does_ provide disconnect supervision..  It
seems that the problem is actually related to the Sangoma A200 card
I'm using, as two other people both using this same card have
expressed the same problem..  Are there any other users on this list
using the Sangoma A200 FXO port card, and experiencing problems with
asterisk not detecting when a channel has been disconnected?  Thanks,

Mike

On 4/24/06, Hadley Rich <asterisk@nice.net.nz>
wrote:
> On Tuesday 25 April 2006 05:50, Mike Garey wrote:
> > When someone calls into our asterisk server over a PSTN line, dials an
> > extension and then hangs up, the SIP phone related to the given
> > extension will ring about 4 or 5 times before asterisk shows that the
> > channel has been hung up in the console. This isn't such a big
deal
> > on its own, but what's happening now is that if a user calls in
from a
> > PSTN line, gets voicemail on the extension, and hangs up before the
> > voicemail starts to record, an empty message will still be recorded
> > and sent to the user.
>
> It sounds very much like you need disconnect supervision.
>
> http://www.voip-info.org/wiki-Asterisk+Disconnect+Supervision
>
> You'll need to see what your provider provides (if anything) and setup
your
> zaptel.conf/zapata.conf accordingly.
>
> hads
>
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Mike Garey wrote:
> As far as I can tell, after discussing this matter with other asterisk
> users in my area, my telco _does_ provide disconnect supervision..  It
> seems that the problem is actually related to the Sangoma A200 card
> I'm using, as two other people both using this same card have
> expressed the same problem..  Are there any other users on this list
> using the Sangoma A200 FXO port card, and experiencing problems with
> asterisk not detecting when a channel has been disconnected?  Thanks,
Hasn't been a problem here with either the TDM400 or A200D cards (both 
are in use in same box).

Just tested it again from an external pstn phone, calling into asterisk.
When the pstn phone hangs up, asterisk recognized it and dropped the sip 
session that was handling the call (to a 7960).

On Mon, 2006-04-24 at 17:20 -0400, Mike Garey wrote:
> As far as I can tell, after discussing this matter with other asterisk
> users in my area, my telco _does_ provide disconnect supervision..  It
> seems that the problem is actually related to the Sangoma A200 card
> I'm using, as two other people both using this same card have
> expressed the same problem..  Are there any other users on this list
> using the Sangoma A200 FXO port card, and experiencing problems with
> asterisk not detecting when a channel has been disconnected?  Thanks,
Are you using kewlstart?