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End-to-End DSL Architectures by Wayne C. Vermillion

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Summary

Cisco DSL hardware, starting with the customer premise equipment (CPE) lines of the Cisco 70 and 820 DSL routers, is presented. Central office (exchange) equipment is also explored. The CO/exchange multiplexers includes the Layer 2 functionality of DSL Access Multiplexers (DSLAMs), as well as the Layer 3 sophistication leading to the designation of IP/DSL Switches, which are all known as the Cisco 6000 series. The Cisco 6000 series permits linking up to 13 units in a technique called subtending. A particular hardware configuration on the IP/DSL Switch also permits Inverse Multiplexing over ATM (IMA) to leverage an existing T1/E1 wiring infrastructure. Finally, the Cisco 6400 Universal Access Concentrator (UAC), that combines high-speed ...

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