Chapter 1. Introduction

ESU 120e Features

The following list describes the standard features in the ESU 120e.

A single E1 interface

An Nx56/64 data port and G.703 drop port interface

Data port supports V.35, EIA-530, V.36 and X.21 electrical inter- faces

An inband communication channel requiring only 8k of band- width from a single TS0

One option slot to house option modules with up to four addi- tional ports, including voice and data

Allows mix of port types to meet the data interface require- ments.

Easy configuration capabilities using simplistic menus dis- played in a liquid crystal display (LCD) window operated by a front panel keypad

Two programmable configuration maps that define the band- width allocation between data ports

Flash memory for software updates

Selectable timing from the network, from the Nx56/64 or drop ports, internally, or from a secondary interface

QRSS; 511 test patterns using Nx option

Extensive self-test and monitoring provides assurance of proper operation

SNMP, Telnet, and T-Watch Pro Management via SLIP or 10BaseT

ESU Option Modules

Some of the option modules available for the ESU 120e are:

Nx56/64 serial interface. This module provides a V.35 serial in- terface in either single or dual versions.

Router module. Integrated IP/IPX Router with 10BaseT inter- face.

NxIQ. Provides extensive frame relay and monitoring capabil- ities.

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ESU 120e User Manual

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ADTRAN user manual ESU 120e Features, ESU Option Modules