In article <-8qdnYusLLKQBWPb4p2dnAA@bt.com>,
gill bates <gillbates@xyz.com> wrote:
>You guys were so helpful yesterday that I am back for more!
>
>I have a basic Asterisk installation, 10 x 9133i with a Sangoma A200D with 1
>(Dual) FXO module and HW Echo Cancellation.
>
>If I call the BT line (let's say on my mobile) wait for the phones to ring,
>then hangup my mobile the phones continue to ring for at least 30 seconds,
>then voicemail kicks in and only when voicemail detects silence does the
>line get hung up.
>
>I believe it is a zapata.conf setting but not sure.
>
>Any ideas?

Check

http://www.voip-info.org/wiki/index....ct+Supervision

right down at the bottom of the page...

Gordon