User manual

Chapter 1. Introduction
1-1 Multiplexer Unit : Apr 2003
1.1 General
Thank you for choosing the Fiber Multiplexer. If you would like to skip right to the
installation and configuration of the Multiplexer, proceed to Chapters 3 and 4.
The MULTIPLEXER UNIT is a 1U (1.75") high standalone or 19" rack mountable
E1/T1/Data/LAN Bridge multiplexer over fiber link, built upon a highly modular design.
The MULTIPLEXER UNIT provides an economic optical connection solution in high-
density E1 and/or T1 installations such as between central offices. By utilizing a modular
design, a large variety of configurations may be realized and the unit may be custom
tailored for each specific application. The 4-CHANNEL E1, T1, V.35 (X.21/RS-530/RS-
449) data, Ethernet Bridge Port cards and optical interface card are all optional. The
standard unit is a chassis with local control and provisions for single or dual power. The
appropriate optical interface card may be selected to support multi-mode or single-mode
fiber cable operation, with or without redundancy. Optical interface connections may be
chosen from a wide variety of connectors including ST™, SC, FC, LC, or MT-RJ. WDM
(Wave Division Multiplexing) optical interfaces are also available. The range of
transmission for optical connection is from 2Km (for multi-mode) up to 120Km (single
mode). Optional External Clock Card (external or internal clock source) and SNMP Card
(for local and remote management purposes) may be installed in the chassis.
1.2 Functional Description
The MULTIPLEXER UNIT basic chassis is available in five power supply
configurations. Depending on the model, power may be derived from single AC
100~240VAC, single DC +20~60VDC, dual AC 100~240VAC, dual DC +20~60VDC, or
AC plus DC power sources. The MULTIPLEXER UNIT provides all Line Card
connections on the rear panel. There are 4 slots available for installation of 4-CHANNEL
E1 or T1 Port Cards (G.703 E1/T1), 4-CHANNEL Data Port Cards, or Single-
CHANNEL Ethernet Bridge LAN Port Cards into the MULTIPLEXER UNIT chassis.
Each 4-CHANNEL Port Card provides 4 individual channels of E1, T1, or Datacom per
Port Card. The first release of the Single-CHANNEL Ethernet Bridge LAN Port Card
provides one 2048kbps WAN link for 10/100Base Ethernet bridging. A later release version
will provide full 8Mbps (E1 x 4) link speed.
The 4-CHANNEL E1 Port Card has the option of using BNC (75 Ohm unbalanced)
or RJ-45 (120 Ohm balanced) connectors for E1 Line interface connections and supports
four separate E1 channels at a transmission rate of 2048Kbps (transparent unframed E1)
each.