I have many SIP clients connected to a conference room using the ConfBridge app. I want each client’s interface to show and update the list of current participants. I could of course keep a list of all participants as they check in and out using another service on the server (by letting each client send a message when it enters or leaves the room). However, if a participant is suddenly disconnected, they won’t be able to notify the server in order to update the participants list. Now since Asterisk will know that the participant was disconnected, I was wondering if Asterisk could send a message to the other participants telling them that one party was disconnected so they can update their list. I am aware that Asterisk provides events via AMI which can be pulled at anytime but this would require setting up a timer to pull such events and update the conference participants list accordingly. If Asterisk itself could notify the remaining participants when someone leaves it would be much more efficient.