46Using the Business Policy Switch 2000 Version 1.2Redundant power supply unit (RPSU) and uninterruptiblepower supply (UPS)The redundant power supply connector allows you to connect a backup powersupply unit to the Business Policy Switch. Nortel Networks provides an optionalredundant power supply unit (RPSU) for this purpose. The BayStack 10 PowerSupply Unit is a hot-swappable power supply unit that provides uninterruptedoperation to as many as four Business Policy Switches in the event that any of theswitch power supplies fail.The BayStack 10 Power Supply Unit has a powerful, modular redundant anduninterruptible power supply (UPS) functionality in a single chassis. It providesscalable power redundancy and protection to your networking equipment. Themodules fit into the right-hand side of the rear of the chassis. The UPS andassociated battery pack module fit into the front of the chassis.For further information, refer to Installation and Reference for the BayStack 10Power Supply Unit (part number 208296-C). Contact your Nortel Networks salesrepresentative for more information.100 Watt DC-DC ConverterThe 100 Watt DC-DC Converter operates in conjunction with the NortelNetworks BayStack 10 Power Supply Unit and 200 Watt AC/DC Power SupplyModule. The 100 Watt DC-DC Converter provides a plug-and-play redundantpower supply unit for the Business Policy Switch 2000, as well as other productsavailable from Nortel Networks. Contact your Nortel Networks salesrepresentative for information about the Nortel Networks products that use the100 Watt DC-DC Converter.For further information about the 100 Watt DC-DC Converter, refer to Installationand Reference for the 100 Watt DC-DC Converter Module (part number209132-B).
