Audio Source Unit with mounting Chassis, space for 4 local rail modules, Microphone and Paging Controls
Modem / Communicator (DACT) / Pager interface (TAP protocol). Takes one local rail space.
Chassis Assembly. Fits in any Lobby or Remote Closet Cabinet except CAB5 Series. Provides space for up to seven LRMs. Rear space for up to two power supplies.
Liquid Crystal Display Module. Mounts to 3-CPU(1).