User manual

Wide Bank 28 DS3 - Release 2.4 July 2004 1-3

Introduction

Features, Functions, and Options

Wide Bank 28 DS3 Features

The Wide Bank 28 DS3 provides:

 Up to 28 DS1 ports with four optional, redundant DS1 circuits

 Up to 21 E1 ports with three optional, redundant E1 circuits

 Up to 2 DS3 ports with network and common electronics redundancy

 Bellcore and ANSI Standards compliance, including Network Equipment Building System

(NEBS) standards

 UL 1950 Safety approval and fuseless protection

 There are 3 ports for system management and surveillance: one 9-pin RS-232 port for

delivering Command Line Interface (CLI), one 10Base-T Ethernet port for SNMP, Telnet,

and TL1, and one 25-pin RS-232 port for TL1 management and Automatic Outbound Alarm

Reporting

 Low-speed (DS1 or E1) Network Interface Unit (NIU) loop-up response, loop-down

response, and DSX-1 line buildout for DS1 (no line buildout for E1)

 Control Panel LED Test & Status Indicators

 Internal DS3 and low-speed Bit Error Rate Tester (BERT) with industry standard Pseudo-

Random Bit Sequence (PRBS) patterns

 Internal self-tests with BERT verification of transmission data paths

 DS3 C-bit application for Far-End terminal alarming, status reporting, and remote loopback

initiation

 DS3 C-bit application terminal-to-terminal data link for identification message support and

management of the remote terminal using Telnet, SNMP, or TL1 over PPP