RAD Data comm E1, T1 Chapter Introduction, Overview, Versions, Power Supply Options

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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 BNC connectors or a DB-15 connector. LED indicators show the operational status of the modem on the front panel. Alarms indicating faults in modem operation are provided to a supervisory port. Local and remote loopback tests are available for diagnostics.

Versions

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 Chapter 5 for the FOM-E1/T1/R description).

Power Supply Options

The following power supply options are available:

AC source: 115 VAC or 230 VAC

DC source: 24 VDC or -48 VDC.

Overview 1-1

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Contents FOM-E1/T1 Page International Headquarters RAD Data Communications Inc FOM-E1/T1Limited Warranty Please observe the following precautions General Safety InstructionsGeneral Safety Practices Connection of AC MainsConnection of DC Mains Isdn Ports Safety StatusTNV-2 TNV-3Electromagnetic Compatibility EMC Canadian Emission Requirements Product Name SafetyDeclaration of Conformity Manufacturers Name Manufacturers AddressQuick Start Guide Installing FOM-E1/T1Configuring FOM-E1/T1 Jumper/Switch Function Possible Settings FactoryConnecting the Cables Operating FOM-E1/T1To connect cables Contents Appendix A. Interface Connector Specifications List of FiguresList of Tables Versions Power Supply OptionsChapter Introduction OverviewFiber Optic Interface FeaturesTest and Diagnostics Capabilities ApplicationFunctional Description Physical DescriptionSignal Conversion Data/Clock RecoveryData Transfer Technical Specifications Temperature Humidity Up to 90%, non-condensing 1A 250V and 50 mA50 C Chapter Installation and Setup Package ContentsSite Requirements and Prerequisites Installation and Setup To install FOM-E1/T1To configure FOM-E1/T1 FOM-E1/T1 PCB Layout When using 4-wire connection, set these switches to FloatingFloating Connecting the InterfacesConnecting the Fiber Optic Interface To connect the fiber optic cablesConnecting the E1/T1 Interface Connecting the PowerTo connect DC power Connecting AC PowerConnecting DC Power To connect AC powerName Type Function Front Panel Controls and IndicatorsFOM-E1/T1 Front Panel Controls and Indicators Chapter OperationsTurning Off Operating InstructionsTurning On Normal Operating InstructionsDB-15 Connector, Alarm Relay Pins Chapter Testing and DiagnosticsStatus Indicators and Alarm Relay Alarm RelayTo activate local loopback Diagnostic TestsLocal Analog Loopback LLB Remote Digital Loopback RLBOFF Troubleshooting InstructionsTroubleshooting Chart Symptom Probable Causes Corrective MeasuresDoes FOM-E1/T1 operate opposite FOM-40? Frequently Asked QuestionsASM-MN-214 Card Cage Chapter FOM-E1/T1/R Card VersionAC Supply Power SupplyDC Supply Power Supply RedundancyFOM-E1/T1/R Front Panel FOM-E1/T1/R Front PanelSetting Internal Jumpers and Switches Installing the FOM-E1/T1/R CardUnbalanced E1 Installing FOM-E1/T1/R into the ASM-MN-214 Card CageAlarm Relay Balanced E1/T1Table A-2. DB-15 Pin Assignment, Alarm Relay Pins Appendix a Interface Connector SpecificationsDB-15 Connector Table A-1. DB-15 Pin Assignment, E1/T1 PinsFOM-E1/T1/R Modem Card CBL-E1T1/RJ45 CableTable A-3 ASM-MN-214, DB-25 Pin Assignment Excellent Good Fair Poor Very Poor Customer Response FormPage Error Report Page Page International Headquarters

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.