The Backbone Node router family is a key element of Nortel Networks Unified Networks strategy, which includes a broad range of end-to-end multiservice solutions. Unified Networks create greater value for customers worldwide by delivering integrated network solutions spanning data and telephony.This BLN-2 Nonredundant Base Unit includes a 4-slot BLN-2 chassis with one SRM-L, one Flash EPROM card, a 620-watt power supply, and documentation. System software includes the BayRS System software suite.