Figure 1-1. Model 5399 Remote Access Concentrator Module - Nortel 5399 Hardware Installation Manual

The Model 5399 Remote Access Concentrator Module is a dial-in remote
access server that supports mixed traffic, such as analog modems, V.120
ISDN Terminal Adapters, and devices supporting synchronous PPP. The
Model 5399 Remote Access Concentrator module is designed to operate
within the Bay Networks Lattice System 5000 Series Hub.
illustrates a Model 5399.

Figure 1-1. Model 5399 Remote Access Concentrator Module

Nortel Networks 5399 Access Switch Hardware Installation Guide
Chapter 1
Introduction
WAN 2
WAN 1
Figure 1-1
1-1