User guide

1-1

Introduction

Digital Link offers four Multi-port Encore DSU/CSUs which enable you to access high-

speed public/private T1/FT1 and frame relay services. The DSU/CSUs convert V.35,

EIA-530 and RS-449 compatible DTE data for T1/FT1 network transport.

The four DSU/CSUs are the VX Encore, DL100 Encore and two Digital Service Hubs.

The products shown in Table 1-1 differ only in the number of data ports they offer.

Figure 1-1, Figure 1-2, and Figure 1-3 show drawings of the VX Encore, DL100 Encore

and a Digital Service Hub, respectively.

An additional standard feature, with the exception of the VX Encore, is a DS1 Drop-

and-Insert port for data and voice, called the auxiliary port. On the VX Encore, the

AUX port is an optional feature.

The four DSU/CSUs combine the functionality of data multiplexers, DSU/CSUs and

transmission monitoring and test equipment. They are ideally suited for frame relay.

1. A Digital Service Hub with 12 data ports is also called a DL1200, with 24 data portsÑDL2400.

Table 1-1 Data Ports

Multi-port Encore DSU/CSUs Number of Data Ports

VX Encore 2

DL100 Encore 2, 4, or 6

Two Digital Service Hubs

12 or 24