Verilink Red Zone Encryption (REMS) (880-502423-001) Product Manual - Manual (Page 11)

Red Zone Encryption Management System (REMS) User Manual 1-1
Chapter
1
Introduction
Overview
The Verilink Access System 2000 Red Zone Encryption Management
System (REMS) is a T1-compatible system for communicating KG-XX
encrypted data
1
between two Red Zones across a Black Zone public or
private network while monitoring network management parameters from
the Red Zone.
The secure area from a DTE to an encryptor is called the Red Zone. The
non-secure public media between encryptors is called the Black Zone.
Figure 1-1 Simplified Block Diagram of a REMS Network
1. The purpose of encryption is to alter intelligent data, producing an unintelligent
bit stream for transport across the non-secure public media. Inversely, the
encryption process is reversed at the destination, reproducing the original intelli-
gent data.
DEFINITION
KEY
DTE
AS2000
REMS with
T1
LEC/
T1
User-supplied compute
running Access Manager 2000
AM2000
Common
Carrier
KG-XX
RS-442/449
DTE
AS200
REMS with
KG-xx
Red Zone Black Zone Red Zone
Near End Far End
D4 or ESF
full 1.544 MHz
RS-442/449
D4 or ESF
full 1.544 MHz