Chapter 5

FOM-E1/T1/R Card Version

This chapter describes the card cage version of FOM-E1/T1. It discusses the following topics:

ASM-MN-214 card cage

FOM-E1/T1/R plug-in card for the ASM-MN-214 cage

Cage and card power supply

Installation of cage and card.

5.1 ASM-MN-214 Card Cage

The ASM-MN-214 card cage contains one or two power supplies and up to

14 plug-in cards. The card types can be FOM-E1/T1/R or other RAD rack version modems/converters – any combination of up to 14 plug-in cards.

For each of the 14 cards, the rear panel (see Figure 5-1)contains a male connector for the terminal block and a DB-25 connector. A protection cover protects the terminal block connectors.

The terminal block contains screws for connecting the transmit and receive pairs and ground, for the balanced E1/T1 interface. The transmit pair is connected to the terminals marked XMT, the receive pair – to the terminals marked RCV, while the fifth screw is a terminal for optional ground connection. When operating FOM-E1/T1/R with unbalanced E1 interface, use a CIA/TB-BNC/214 adapter, which converts the terminal block connector into two coaxial BNC connectors.

The 25-pin D-type female connector serves as an alarm relay port (see Appendix A for the connector pinout).

ASM-MN-214 Card Cage

5-1

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RAD Data comm operation manual Chapter FOM-E1/T1/R Card Version, ASM-MN-214 Card Cage

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.