Chapter 4 Testing and Diagnostics

FOM-E1/T1Installation and Operation Manual

 

 

 

 

 

 

 

 

 

4.2 Diagnostic Tests

Local Analog Loopback (LLB)

FOM-E1/T1 supports activation of a local loopback, which tests the performance of the E1/T1 electrical interface of the local unit and equipment attached to it.

The data received at the E1/T1 electrical interface is looped back to the equipment attached to it (see Figure 4-1).

LOC

Position

Coax

E1 or T1 BERT

FOM-E1/T1

Figure 4-1. Local Analog Loopback

To activate local loopback:

Slide the front panel TEST switch to the LOC position.

The TEST LOC indicator lights up and remains lit as long as the local loopback is active.

Remote Digital Loopback (RLB)

FOM-E1/T1 supports activation of a remote loopback, which tests the performance of the local unit's E1/T1 electrical and optical interfaces and the remote unit's optical interface.

The data received at the optical interface of the remote unit is transmitted to the remote electrical interface and at the same time is looped back to the local unit (see Figure 4-2).

E1 or T1 BERT

Coax

REM

Position

Local

FOM-E1/T1

Fiber Optic

Remote

FOM-E1/T1

Figure 4-2. Remote Digital Loopback

To activate remote loopback:

Slide the front panel TEST switch to the REM position.

The TEST REM indicator lights up and remains lit as long as the remote loopback is active.

4-2

Diagnostic Tests

Page 30
Image 30
RAD Data comm T1, E1 Diagnostic Tests, Local Analog Loopback LLB, Remote Digital Loopback RLB, To activate local loopback

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.