The Cisco 7400 Application Specific Router (ASR) is the highest performance single-rack unit (RU) router on the market. Its compact, stackable architecture is expressly designed for application specific routing deployments in service provider and enterprise networks. Taking advantage of the Parallel eXpress Forwarding (PXF) technology patented by Cisco Systems, the Cisco 7400 ASR delivers a premium suite of hardware-accelerated network services.Cisco 7401 ASR-BB is a broadband subscriber aggregation including xDSL, ISDN, Fiber to the Curb (FTTC), and wireless connections.