Verilink Red Zone Encryption (REMS) (880-502423-001) Product Manual - Manual (Page 48)

FBR and BRC components of REMS
4-8 Red Zone Encryption Management System (REMS) User Manual
Black to Red Communicator (BRC)
The Black to Red Communicator (BRC) is a single front-back module
located in the Black Zone. It functions as a “super CSU.”
Functions of the
BRC The BRC performs the following functions:
■
Provides positioning for the ESF framing bit
■
Collects network performance data and transparently passes it
through the decrypting direction of the active encryptor to the FBR
for further processing and transmission to Access Manager 2000
By coordinating with the FBR, the BRC provides a one-way
communication channel through the encryptor to the FBR.
The BRC provides two interfaces which operate at 1.544 Mbps:
■
An ESF-compliant T1 network interface which includes performance
monitoring and data collection as defined by AT&T Pub. 54016
Rev. 2 and ANSI T1.403
■
An RS-422 interface to the KG bulk encryption devices (KG-81 and
KG-94)
Components of
the BRC The Black to Red Communicator (BRC) is made of two components
based on standard AS2000 plug-in modules. The front module is the NCC
2020. The back module is the CDM 2249. See Figur e4-8, Functional
Block Diagram of BRC Component Modules.