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.Open the modem’s case.

2.Select the E1/T1 electrical interface (JP2, JP4, JP5, JP6, JP7 and JP8).

3.If using E1 unbalanced interface, connect the BNC shield to the chassis ground. If you are using balanced E1/T1, leave the shield floating (SW1 and SW2).

4.Close the modem’s case.

Table below provides details on the functions of the internal jumpers and switches, and their default settings.

Jumper/Switch

Function

Possible Settings

Factory

 

 

 

Setting

SW3, AIS

When a major alarm is

 

detected, AIS is transmitted

 

to either the electrical or

 

optical interface.

ON – Transmit AIS

ON

OFF – Do not transmit AIS

 

SW2, INPUT Ground

Controls connection of the

SW1, OUTPUT Ground

BNC shield to the chassis

 

ground

CONNECTED – BNC shield is connected to the chassis ground (for E1 unbalanced)

FLOATING – BNC shield is disconnected

from the chassis ground FLOATING (for E1/T1 balanced)

JP2, JP4, JP5, JP6, JP7, JP8,

Selects the E1/T1 electrical

100 ohm BAL T1 – T1 100balanced

INTERFACE

interface

(DB-15 connector)

 

 

120 ohm BAL CEPT – E1 120balanced

 

 

(DB-15 connector)

 

 

75 ohm UNBAL CEPT – E1 75

 

 

unbalanced

 

 

(BNC

 

 

connectors)

Note: For FOM-E1/T1units with 115 VAC, factory setting is 100BAL T1.

120ohm

BAL CEPT

Installing FOM-E1/T1

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RAD Data comm operation manual Quick Start Guide, Installing FOM-E1/T1, Configuring FOM-E1/T1

T1, E1 specifications

RAD Data Communication specializes in providing advanced networking solutions, particularly for E1 and T1 lines. These digital transmission systems are pivotal in telecommunications, allowing for efficient data transfer, voice communication, and multimedia services.

E1 and T1 lines are standardized digital circuits offering capacity for multiple channels. A T1 line, commonly used in North America, accommodates data transmission at a rate of 1.544 Mbps, while an E1 line, predominantly used in Europe and other parts of the world, supports a rate of 2.048 Mbps. Each line can carry multiple voice channels—up to 24 for T1 and 32 for E1—making them suitable for both voice and data services.

One of the main features of RAD's E1 and T1 solutions is their versatility. These lines can be utilized in various applications, including traditional telephony, private branch exchanges (PBXs), and modern Voice over IP (VoIP) networks. RAD's solutions enable users to seamlessly migrate from older systems to more integrated and efficient digital networks without sacrificing performance.

RAD Data Communication focuses on ensuring reliability and robustness in their E1 and T1 offerings. With built-in error detection mechanisms, such as cyclic redundancy check (CRC), these systems maintain high levels of data integrity. In addition, RAD’s devices often incorporate advanced features like Adaptive Rate Control, allowing for dynamic adjustments to accommodate varying network conditions.

Technology-wise, RAD integrates advanced protocols and features, such as Frame Relay and Multiprotocol Label Switching (MPLS), into their E1 and T1 equipment. This flexibility supports the transmission of diverse data types, ensuring users can transition smoothly between legacy systems and modern technologies.

Another characteristic that sets RAD's products apart is their management capabilities. Many devices come equipped with SNMP (Simple Network Management Protocol) support, enabling remote monitoring and management. This feature is essential for network administrators seeking to maintain optimal performance and quickly address potential issues.

Moreover, RAD's E1 and T1 solutions are designed for easy integration into existing network infrastructures. Their compact and modular design allows for straightforward installation and scalability, accommodating future growth and technology advancements without major overhauls.

In summary, RAD Data Communication’s E1 and T1 solutions are characterized by their reliability, versatility, and advanced management features. Designed to meet the evolving needs of communication networks, they ensure that users can take full advantage of both traditional and modern telecommunications technologies.