Radiant Communications FOM-E1, Инструкция по установке и эксплуатации

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FOM-E1/T1 Ver. 2.0 Overview 1-1
Chapter 1
Introduction
1.1 Overview
This manual provides information on the technical characteristics, installation,
and operation of the FOM-E1/T1 fiber optic modem as a standalone unit, and as
FOM-E1/T1/R rack-mount card for the ASM-MN-214 modem rack.
FOM-E1/T1 is a fiber optic modem for transmission of E1 (2.048 Mbps) or T1
(1.544 Mbps) over multimode or single-mode fiber optic media. The
communication equipment is connected to FOM-E1/T1 according to the ITU G.703
standard. The modem is designed to operate with several types of fiber optic
cables and connectors. The electrical signals are connected through an RJ-45
connector or BNC connectors. LED indicators on the front panel show the
operational status of the modem. Alarms indicating faults in modem operation
are relayed via dedicated port. Local and remote loopback tests are available for
diagnostics.
Product Options
The following versions of the FOM-E1/T1 modem are available:
• FOM-E1/T1 – standalone unit
•
FOM-E1/T1/R – a plug-in card for installation in the ASM-MN-214, 19-inch
modem rack, holding up to 14 cards (see C
hapter 5
for the FOM-E1/T1/R
description).
Application
In the application illustrated, each FOM-E1/T1 receives E1 or T1 signals that are
equalized to overcome electrical link distortion. FOM-E1/T1 then converts the E1
or T1 signals into an optical signal.
FOM-E1/T1 FOM-E1/T1
DACS
E1/T1
Local Site Remote Site
E1/T1
Coax
Fiber Optic
Coax
PBX
Figure 1-1 FOM-E1/T1 Application