Sometimes calls/pages to the PA1 are not disconnected, by the calling phone, because the user does not hang up the call. The pa1_call_timeout setting is set to 300 seconds (5 minutes) by default. Pages to the PA1, during an active page that has not been disconnected, will result in a failed page attempt until 300 seconds has elapsed.
You can modify the setting and set it to a lower value to disconnect calls in less than 300 seconds;
You can configure the setting using this HTTP GET;
example disconnect time of 25 seconds:
There is an open bug report (SCPP-6503) that affects 8.7.5.x firmware. The pa1_call_timeout feature does not work. If you need this feature it is working in the 126.96.36.199.9 version of the firmware;