...
Places the caller into the selected conference Room.
Multiple users can be placed into a conference to facilitate a group discussion ( a conference call).
Conference rooms that only exposed via an internal route (e.g. extension 10) can usually be configured without a PIN.
Conference rooms that are exposed externally should always be configured with a PIN to stop third parties abusing the system.
Room No
The Conference Room to place the caller into.
Prompt For Room
If checked, the user will be prompted to enter the room no. This is no more than an additional security check as the configured room no. will always be used.
PIN
The PIN the caller will need to enter the conference.
...
If the conference no. is exposed externally then you should set a PIN. For internal conference room its optionalthe PIN is usually left blank.