# Calling RTU Acknowledges Alarm

This setting determines whether entry of a PIN from the touch tone menu during a notification call will automatically acknowledge all alarms.

- If PINs have been configured: If set to No, the caller will have to enter a valid PIN and then press the proper tone on the touch tone menu, to acknowledge all alarms. If set to Require PINs, then once a valid PIN has been entered, all alarms are automatically acknowledged without need to further enter a tone from the touch tone menu.
- If PINs have not been configured: If set to No, the caller would have to press the proper tone on the touch tone menu, to acknowledge all alarms. If set to Require PIN, this parameter is ignored.