RDLU Remote Digital Line Unit Description The Remote Digital Line Unit (RDLU) provides the ability to locate the port sections of the switching system at a remote site. It can be equipped with its own batteries and chargers and can be located up to 30 miles from the switching equipment. The RDLU is designed to operate in hostile ambient temperature environments, so installation in an equipment closet is acceptable. The RDLU is an economically sound way to avoid cable access nightmares and reduce the overall footprint of the switching system for large installations and campus environments. There are no limitations to the number of RDLUs that can be equipped and supported, up to the maximum system size. Each RDLU requires only fiber optic or microwave connectivity. The RDLU and the switching equipment use many of the same circuit boards, providing easy access to spare parts. Features • Provides full feature transparency • Self-contained • Very small size • Low power consumption • Complete voice and data services • Self-contained batteries and charger • Can be located more that 30 miles from switching equipment • Fiber optic and microwave connectivity • Unlimited number of RDLUs supported (up to maximum number of ports) • Line increments of 24 users • Up to 384 users per rack • Analog/Digital lines • Rugged package • Operates in hostile environments • Flexible power options Characteristics • Up to 384 ports • Unmanned operation • Voice and data • Less than 1 in 100 million chances of a bit error • Battery back-up • Low current requirements • 48-volt power • 20 to 90 percent non-condensing operating humidity range • AC or DC power operates up to 120 degrees ambient temperature