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Introduction
What is the Hotwire 8820 GranDSLAM?
The Hotwire
Provider (NSP), provides high-speed Internet or intranet access. The GranDSLAM
has a 20-slot chassis with integral power distribution and conditioning, as well as
alarm, cooling, and interface subsystems designed to house up to 17 DSL port
cards. One slot is available for a Management Control Processor (MCP) card. The
Shelf Concentration Module (SCM), which provides aggregation of Digital
Subscriber Line (DSL) traffic for the chassis, fits in Slot A. An Asynchronous
Transfer Mode (ATM) backplane provides ATM aggregation across multiple DSL
port cards. With every slot populated, each GranDSLAM shelf can support up to
408 DSL ports.
The GranDSLAM chassis allows addressable diagnostic connectivity between the
MCP and each of the DSL cards. It also converts and distributes 48V power to the
cards in the chassis. In addition, it provides fans to cool the circuit cards in the
rack.
The following illustration shows a high-level view of an example Hotwire
configuration for an 8820 GranDSLAM chassis.
8820-A2-GN20-30
®
8820 GranDSLAM, which can be installed at the Network Service
Central Office (CO)
Network
Hotwire
Service
IPC
Provider
ATM
SCM
DSL
CARD
GranDSLAM
Legend: DSL – Digital Subscriber Line
MDF – Main Distribution Frame
SN – Service Node
March 2001
POTS/DSL
MDF
CO
POTS
Splitter
Switched
Network
Optional
IPC
– Interworking Packet Concentrator
POTS – Plain Old Telephone Service
1
Customer Premises (CP)
Data
Interface
SN
POTS
Voice
Interface
CP
POTS
Splitter
Optional
00-16659
1-1
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