User manual

Product Description
Overview
2-2 July 2004 Wide Bank 28 DS3 - Release 2.4
Overview
 Features ... 2-2
 Redundant Architecture ... 2-4
The Wide Bank 28 DS3 Multiplexer is available in increments up to the maximum of seven four-
channel DS1 cards supporting 28 DS1 connections, or with seven three-channel E1 cards supporting 21
E1 connections. Built-in options include 1:7 low-speed electronic redundancy, 1:1 Controller
electronics redundancy and electronics redundancy with 1+1 network protection. The unit features
solid-state fuseless protection, low power consumption, hot card swapping, DS3 and low-speed (DS1
or E1) loopbacks for fault isolation, built-in PRBS Bit Error Rate Testing (BERT), and integrated
Network Interface Unit (NIU) functionality. Configuration and maintenance testing is provided by a
command-line interface or an SNMP interface.
The Wide Bank 28 DS3 Multiplexer supplies clear-channel DS1/E1 transport, is transparent to DS1/E1
framing, and provides basic DS1/E1 performance monitoring.
Features
 Single Standard Rack Unit (1 RU) size
WxDxH: 17 x 10 x 1.75 inches (43.2 x 25.4 x 4.45 cm)
 75 ohm unbalanced BNC DS3 input standard
 Dual independent –48 VDC power feeds with optional AC to DC power converter/battery
charger and eight-hour battery backup system
 High-level integration reduces power consumption to less than 36W for a fully-redundant
configuration with fan faceplate
 Solid-state, fuseless, overvoltage/overcurrent protection with automatic reset and alarmed
overcurrent protectors
 Optional DS3 redundancy for either:
- Protected electronics (1:1), or
- Protected electronics and “hitless” network protection (1+1). Requires second
independent DS3 input.
 1:7 by 4 DS1 electronic redundancy, or 1:7 by 3 E1 redundancy
 Built-in automatic self-tests for all internal circuitry and transmission data paths to determine
network vs. electronic faults
 Integrated Network Interface Unit (NIU) functionality provides DS3 loopbacks with AIS
toward the low-speed CPE
 IP routing with Point-to-Point Protocol over a C-bit data link for management of remote unit
 DS3 C-bit path maintenance data link