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Chapter 1. Introduction
1-2
ESU 120e User Manual 61200420L1-1
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.