Verilink Red Zone Encryption (REMS) (880-502423-001) Produc Manual de usuario descargar pdf (Pagina 43)

Frame Bit Repositioner (FBR)

Red Zone Encryption Management System (REMS) User Manual

4-3

Frame Bit Repositioner (FBR)

The Frame Bit Repositioner (FBR) provides two interfaces which

operate at 1.544 Mbps:

■

a T1 or RS-422 DTE interface

■

an RS-422 interface to the KG bulk encryption device

The Frame Bit Repositioner (FBR) is a dual module assembly, made up

of a paired CSU and DSU. These functions are implemented by one NCC

2020-based front module and one DIU 2130-based front module. Both

modules contain special Flash EPROMs.

See Figur e4-2, Functional Block Diagram of FBR Component Modules.

Figure 4-2 Functional Block Diagram of FBR Component Modules

The NCC 2020 connects to the Red Zone DTE equipment via its

CIM2020 rear connector module. The DIU 2130 connects to the

encryptor via its DIM 2530 rear connector module.

The FBR generates its own proprietary code and performs the following

functions:

■

Receives and decodes performance data originating at the BRC

This information is processed and stored in real time performance

registers, duplicating the near-end and far-end “Black Zone”

registers. The information can be viewed by the network

management system in the Red Zone, the Verilink’s PC/Windows-

based Access Manager 2000 (AM2000).

FBR

KG-XX Encryptor

128-pin

NCC 202

connecto

CIM 2020

128-pin

DIU 2130

connecto

DIM 2530

Shelf

backplane

MUX D4/

BRC

To network

To PC/Access Manage

Encryptor —>

ESF

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Verilink Red Zone Encryption (REMS) (880-502423-001) Produc Manual de usuario Pagina 43

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