Exactly because you are hanging up on the sli port and it stays off hook. The only way I think the system can send a disconnect to a sli port on hang up is if the sli port is programmed as a vmail port. In North America it would be mmc 207 assign VM/AA Port


My only other suggestion is to use a spare digital phone and tap the speaker output and feed it into a pa amplifier.

Last edited by pvj; 09/04/19 01:01 PM.