asterisk users - Oct 2005 - Hang-up Detect - Yet Again

I realise I am not alone in this, but I don't seem to be finding many
solutions.

I am running a CentOS box and * 1.09 with a TDM11B (1xFXS/1xFXO).

Everything works great accept hang-up detection of incoming PSTN calls.

* answers the call, but if the incoming caller hangs up, * does not release
the line.

I have determined the following information about my line:

When On-Hook line voltage = 24.5VDC
When Off-Hook line voltage = 8.27VDC
When Ringing line voltage alternates between 24VDC (no ring) and 40+VDC
(ringing)

I also determined that when a caller hangs up, there is a couple of clicks
on the line, then a dial tone.

I am using Kewlstart signalling.

I have tried BUSYDETECT and CALLPROGRESS, but to no avail.

Does anyone have a solution for this?
Can anyone tell me what type of signalling I should be using/what my TELCO
is providing?

Thanks, and I'm sorry for a repetitive question.

Leigh

Your telco must provide remote disconnect supervision on that trunk in
order for disconnects to be recognized by your card.

On 10/3/05, Leigh Fereday <leigh@mustique.vc>
wrote:
>
> I realise I am not alone in this, but I don't seem to be finding many
> solutions.
>
> I am running a CentOS box and * 1.09 with a TDM11B (1xFXS/1xFXO).
>
> Everything works great accept hang-up detection of incoming PSTN calls.
>
> * answers the call, but if the incoming caller hangs up, * does not
> release
> the line.
>
> I have determined the following information about my line:
>
> When On-Hook line voltage = 24.5VDC
> When Off-Hook line voltage = 8.27VDC
> When Ringing line voltage alternates between 24VDC (no ring) and 40+VDC
> (ringing)
>
> I also determined that when a caller hangs up, there is a couple of clicks
> on the line, then a dial tone.
>
> I am using Kewlstart signalling.
>
> I have tried BUSYDETECT and CALLPROGRESS, but to no avail.
>
> Does anyone have a solution for this?
> Can anyone tell me what type of signalling I should be using/what my TELCO
> is providing?
>
> Thanks, and I'm sorry for a repetitive question.
>
> Leigh
>
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> * answers the call, but if the incoming caller hangs up, * does not
release the line.

Is there a polarity reversal on hangup (those clicks you hear maybe)? If so
then you may find that using the CVS-HEAD version of Asterisk will help
hugely. Put hanguponpolarityswitch=yes in your zapata.conf

But I'm positive that the definitive answer to most people's hang up
detection problems would be some code in chan_zap to detect a tone other
than busy on hangup.

For example on my line is it a continuous tone. On yours you get a
dial-tone. 

Faris.