11 Introducing the COMPANION 200COMPANION 200 Installation and Maintenance Guide P0725810 Issue 3.0COMPANION 200 componentsThe COMPANION 200 has the following major components:• COMPANION 200 Controller• COMPANION Base Stations• Administration Terminal• Portable telephones (portables)ControllerThe COMPANION 200 Controller connects to the host switch withstandard analog telephone lines (access lines), and to the BaseStations, the Administration Terminal, and any Remote AccessDevice (RAD) with Time Compression Multiplexing (TCM) ports.Support for access lines is provided by adding up to two LineCartridges to the Controller. With Line Modules and Base StationModules connected to Expansion Cartridges, the Controller canhandle additional access lines and Base Stations.Base StationsThe COMPANION Base Stations form a radio link to the portables.Each Base Station has two independent radios, each with twointernal antennas and a connector for an external antenna. BaseStations can be powered remotely by a Remote Power Interconnectunit (RPI), or locally by a power supply that plugs into an ac outlet.The Base Station is designed to be installed indoors only. Externalantennas can extend coverage to areas more difficult to reach such asstairwells or tunnels. Each Base Station can support up to two radiolinks at a time.Administration TerminalA Northern Telecom M7310 terminal serves as the AdministrationTerminal for the COMPANION 200 system. It is used inconfiguration, administration, and maintenance programmingsessions. It does not support either incoming or outgoing calls.PortablesThe COMPANION portables are battery-powered, pocket-sizedportable telephones. The COMPANION 200 can support amaximum of 152 portables. Each portable requires one access line.
