Digital Subscriber Line (DSL) Access System and interoperates with the Hotwire 8373,
8374, and 8510 RADSL cards in the Digital Subscriber Line Access Multiplexer
(DSLAM) system.

The 6371 router operates as an IP router connecting a DSL link to an Ethernet network
to provide high-speed Internet or corporate LAN access over traditional twisted-pair
copper telephone wiring. Copper pairs run from the central office to the customer
premises to create the local loop. The local loop terminates on the customer premises
at the demarcation point in a punchdown block or network interface device (NID).

Optional POTS Splitter

An optional POTS (plain old telephone service) splitter can be installed to block out the
DSL signal and allows the POTS frequencies to pass through. At the customer
premises, the DSL router and a telephone can function simultaneously over the same
pair of copper wires when either:

A Hotwire 5030 or 5038 POTS Splitter is installed near the demarcation point for all
telephones on the same POTS line as DSL,

A Hotwire 5038 Distributed POTS Filter is installed on each telephone on the same
POTS line as DSL.