Mike,
As someone else mentioned, the delay in getting the disconnect from the
CO is a function of the CO equipment and there isn't much you can do
about that. In one of my test cases from yesterday, disconnect came
within three seconds of the pstn phone hanging up.
I'd have to guess that some CO switches probably have some form of
timeout parameter that is applied to the entire switch, and the
parameter probably has something to do with limiting internal switch
issues, conflicts with flash, etc, etc. I'd also guess the delay can
probably be traced to specific CO switch vendors, model of switch, etc.
In the old electro-mechanical switches, disconnect would happen within a
second or two.
If a pstn caller listens to someone's entire voicemail greeting and then
hangs up, you're going to be stuck with an empty voicemail of whatever
duration that you have maxsilence set to in voicemail.conf. Don't think
there is anything you can actually do about that.
Rich
Mike Garey wrote:
well, the problem isn't that the card doesn't detect a disconnect,
it's that it doesn't detect it immediately (or at least within a short
period). I'm talking about 10 or so seconds before the channel is
hung up - which is causing empty voicemail messages to be left when
the user hangs up before the voicemail starts to record (since the
channel sticks around, and asterisk thinks the person is still there).
I tried enabling "busydetect=yes" in zapata.conf, but it didn't make
a difference.
Mike
On 4/24/06, Mark Phillips <[EMAIL PROTECTED]> wrote:
Likewise here.
Using a 10 port FXO card and no problems detecting remote hangup. I'll
grant you it can be a little slow sometimes however.
On Mon, 2006-04-24 at 16:54 -0500, Rich Adamson wrote:
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).
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