Specifications

FOM-E1/T1 Ver. 2.0 Installing FOM-E1/T1 1
Quick Start Guide
Installation of FOM-E1/T1 should be carried out only by an experienced
technician. If you are familiar with FOM-E1/T1, use this quick start guide to set it
up for operation.
This guide describes the standalone version of the modem.
Perform the installation procedures for both the local and the remote units.
1. Installing FOM-E1/T1
Configuring FOM-E1/T1
1. Disconnect all the cables connected to FOM-E1/T1.
2. Locate the DIP switch on the FOM-E1/T1 rear panel.
3. Select the electrical interface type (E1 or T1) by setting the E1/T1 section of the
rear panel DIP switch to appropriate position.
4. For E1 interface, select its type (balanced or unbalanced) by setting the
BAL/UNBAL section of the rear panel DIP switch to appropriate position.
Table below provides details on the functions of the DIP switch, and its default
settings.
Switch Function Possible Settings (default setting in bold)
SW1, LOOP ENABLE Enables or disables LLB or RLB activation ON – LLB or RLB is activated
OFF – LLB or RLB is not activated
SW2, RLB/LLB Selects local loopback (LLB) or remote
loopback (RLB) to be activated from
FOM-E1/T1
ON – RLB is selected
OFF – LLB is selected
SW3, E1/T1 Selects electrical interface type (E1 or T1) ON – E1
OFF – T1
SW4, BAL/UNBAL Selects the E1 interface type (balanced or
unbalanced)
ON – Balanced E1 (120Ω)
OFF – Unbalanced E1 (75Ω)
SW5, AIS When a major alarm is detected, AIS is
transmitted to the electrical or optical
interface.
ON – Transmit AIS
OFF – Do not transmit AIS