RAD Data comm E1, T1 Troubleshooting Instructions, Troubleshooting Chart, Off, Electrical

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FOM-E1/T1Installation and Operation ManualChapter 4 Testing and Diagnostics

4.3 Troubleshooting Instructions

Table 4-2provides troubleshooting details. Perform the actions listed under Corrective Measures in the order given in the table, until the problem is corrected.

 

Table 4-2. Troubleshooting Chart

 

 

 

Symptom

Probable Cause(s)

Corrective Measures

 

 

 

PWR LED is

No AC power

Verify that the power outlet is providing the required power.

OFF

 

Ensure that both ends of the AC power cord are connected

 

 

properly.

 

 

 

 

Blown fuse

Replace with fuse of proper rating.

 

 

 

ELECTRICAL

One of the four wires is

Ensure all the wires are connected properly to the DB-15

LOW LED is

disconnected from the DB-15

connector.

ON

connector of FOM-E1/T1

 

 

 

 

 

One of coaxial cables is

Ensure that both ends of the coaxial cables are connected

 

disconnected or defective

properly and that the cables operate properly.

 

 

 

 

The attached equipment

Check that the output levels of equipment attached to

 

outputs are not according to

FOM-E1/T1 comply with G.703 electrical levels.

 

G.703 electrical levels

 

 

 

 

 

The SW1, SW2 switches are

Verify that the SW1, SW2 switch positions correspond to the

 

set incorrectly

E1/T1 interface type.

 

 

 

ELECTRICAL

The attached equipment is

Ensure that the equipment attached to the FOM-E1/T1

AIS LED is ON

transmitting “All 1s" string

transmits real data (not “all 1s").

 

 

 

OPTICAL ERR

No optical connection.

Ensure that both transmit and receive fiber connections on

LED is ON

 

the local and remote units are connected properly.

 

 

 

 

Optical budget is too low

Measure the optical loss over the fiber link and verify that it

 

 

meets the product specifications.

 

 

 

OPTICAL AIS

The equipment attached to

Check the remote attached equipment transmission.

LED is ON

the remote unit is transmitting

 

 

“All 1s" string

 

 

 

 

 

The remote unit detected

Check the remote unit and the remote attached equipment

 

Electrical Low alert

for possible fault.

 

 

 

Troubleshooting Instructions

4-3

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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 InstructionsConnection of AC Mains General Safety PracticesConnection 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 FactoryOperating FOM-E1/T1 Connecting the CablesTo connect cables Contents List of Figures Appendix A. Interface Connector SpecificationsList of Tables Versions Power Supply OptionsChapter Introduction OverviewFiber Optic Interface FeaturesTest and Diagnostics Capabilities ApplicationFunctional Description Physical DescriptionData/Clock Recovery Signal ConversionData Transfer Technical Specifications 1A 250V and 50 mA Temperature Humidity Up to 90%, non-condensing50 C Package Contents Chapter Installation and SetupSite Requirements and Prerequisites To install FOM-E1/T1 Installation and SetupTo 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 PinsCBL-E1T1/RJ45 Cable FOM-E1/T1/R Modem CardTable 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.