8000-A2-GB26-50 April 2001 1-1
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Hotwire DSL System Description

What is the Hotwire DSL System?

The Hotwire® Digital Subscriber Line (DSL) system is a set of central site products
that terminate and consolidate packet data traffic from many customers in a
serving area. The DSL card(s) then forwards the traffic to one or more network
access provider networks.
High-speed Internet and intranet access is either bridged or routed on the DSL line
cards and multiplexed over backbone networks. By enabling very high speeds
using DSL technology and concentrating Internet Protocol (IP) traffic, greater
performance is realized.
In addition, the Hotwire GranDSLAM, with an endpoint such as a 6310 Multiple
Virtual Lines (MVL®) modem and 5620 Remote Termination Unit (RTU), can
co-exist with plain old telephone service (POTS) over the same copper telephone
line, providing simultaneous usage of POTS and digital applications. That is, the
optional central office (CO) POTS splitter and customer premises POTS filter allow
simultaneous voice and data connections over a standard telephone line.
The following illustration shows a typical configuration for a Hotwire 8610/8810
DSLAM chassis.
Legend: DSL –Digital Subscriber Line IPC –Interworking Packet Concentrator
MDF–Main Distribution Frame POTS–Plain Old Telephone Service
SN –Service Node
DSL
CARD
DSLAM
Central Office (CO)
99-15674-03
Customer Premises (CP)
Ethernet
SN
CP
POTS
Splitter
CO
POTS
Splitter
MDF