I’m using a Bogen ADP1 on an FXS port for a door phone.
It does what it’s supposed to, calling a ring group when you push a button, or you can call it from another extension.
But, when you hang up, the door phone gives a busy signal for 1-1/2 minutes before finally going off hook.
exten => s,1,Dial(LOCAL/5002@from-internal) ; ring group 5002
exten => s,1,Hangup()
In Extensions, 1001 (the door phone) I tried setting busy detect to yes and the number to 3.
It didn’t make any difference.
I’m running Current Asterisk Version: 13.19.1