Paradyne Hotwire 8620, Installation Manual, Page: 13 / 58

8620-A2-GN20-50 June 2004
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Introduction
The 8620 Broadband Access Concentrator
The 8620 Broadband Access Concentrator (BAC), which is designed for use in an
Internet Service Provider (ISP) or Network Access Provider (NAP) location, is a
low-cost alternative to the 8820 BAC. The 8620 BAC can also be placed in a
Remote Terminal (RT) adjacent to the Telco’s Digital Loop Carrier (DLC) systems.
It provides high-speed Internet or intranet access.
The System Interface Module (SIM) is shipped with the chassis, installed in the
bottom slot. The SIM provides user interface connections on the front of the BAC.
An Asynchronous Transfer Mode (ATM) backplane provides ATM aggregation
across multiple DSL port cards.
With Release 3.0 of the BAC, there are two configurations:
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SCP-card-based. A Shelf Concentration and Processing (SCP) card is
installed in Slot A to provide the management and aggregation functions. The
chassis supports up to three line cards and 144 ports.
The SCP card supports Models 8955, 8965, 8968, and 8985 ATM line cards,
the Model 8995 T1 IMA card, and the Model 8997 E1 IMA card. With an MCP
installed, legacy packet cards (Model 8312) and TDM cards (Models 8775,
8777, 8779, and 8799) are also supported.
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SCM-based. A Management Control Processor (MCP) card is installed in
Slot 1 for management of the line cards. A Shelf Concentration Module (SCM),
installed in Slot A, provides aggregation of DSL traffic for the chassis. The
chassis supports up to two line cards and 48 ports.
The following illustration shows a high-level view of a typical 8620 BAC
configuration.