8

TROUBLESHOOTING

This chapter explains how to troubleshoot specific problems you may encounter during power-on and system operation. It also shows how to perform related diagnostic tasks, such as replacing fuses or cleaning fiber optic cables.

If you experience problems that are not addressed in this chapter, contact 3Com Technical Support. See Appendix D.

Solving Common The following problems may arise while working with the CoreBuilderTM

Problems7000 family ATM switch. If your problem does not appear on this list, view relevant statistics and parameters using the Administration Console menus (refer to CoreBuilder 7000 family ATM switches User Guide). You can also contact 3Com Technical Support. Also, be sure to read through the release notes.

Table 8-1Recommended Action for Common Problems

Problem

Recommended Action

 

 

Terminal does not

If the control terminal is physically connected to the CoreBuilder 7000 family ATM switch,

show anything

but does not load the Administration Console Menus, verify that your terminal setup

 

matches the specifications (see “Connecting the Control Terminal” on page 4-19). Also,

 

make sure your cable is configured as DCE (see “Ethernet Cabling” on page E-11).

 

 

Port cables do not

If the cables attached to the CoreBuilder 7000 family ATM switch interface ports do not

work

work, check that the connectors are firmly snapped in place. Also, make sure that each

 

wire connects to Rx on one end and Tx on the other.

 

 

ACT LED not blinking

When the CoreBuilder 7000 family ATM switch is activated, the switch module and

 

interface cards ACT LEDs should be blinking. If not, verify that the switch module and

 

interface cards are properly inserted. Make sure that the control terminal is connected to

 

the control port correctly, as an incorrect connection of this cable sometimes results in the

 

inability of the system to function properly.

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3Com DUA3700-0BAA04 manual Troubleshooting, Problem Recommended Action

DUA3700-0BAA04 specifications

The 3Com DUA3700-0BAA04 is an advanced multi-service access device designed to cater to the needs of enterprises that require versatile connectivity solutions. As businesses evolve and expand, the demand for efficient, robust communication networks grows. The DUA3700-0BAA04 meets this need by providing a flexible architecture capable of supporting various types of network services, including data, voice, and video over IP.

One of the standout features of the DUA3700-0BAA04 is its support for both Ethernet and TDM (Time Division Multiplexing) technologies. This dual capability allows businesses to seamlessly integrate legacy systems with state-of-the-art IP networks, ensuring a smooth transition in upgrading communication infrastructures. The device supports a wide range of interfaces, making it suitable for diverse operational environments.

Equipped with powerful processing capabilities, the DUA3700-0BAA04 ensures high-performance operation, even under heavy loads. It employs advanced Quality of Service (QoS) mechanisms, enabling prioritization of voice and video traffic. This is crucial for maintaining call clarity and ensuring that video conferencing runs smoothly, providing users with a superior experience.

The DUA3700-0BAA04 also features robust security protocols that protect sensitive data as it traverses the network. Built-in firewalls, VPN support, and encryption technologies safeguard information against unauthorized access, making this device a reliable choice for organizations that deal with confidential data.

Another significant aspect of the 3Com DUA3700-0BAA04 is its scalability. Businesses can start with a basic configuration and expand functionalities as needed, allowing for cost-effective growth. Its modular design means that users can add or upgrade modules for additional services without replacing the entire device.

Management and troubleshooting are simplified with a user-friendly interface that provides clear diagnostics and monitoring capabilities. This allows IT teams to maintain the network effectively and respond quickly to any issues that arise.

In summary, the 3Com DUA3700-0BAA04 combines versatility, performance, and security in a single device. Its comprehensive feature set, advanced technologies, and scalability make it an ideal solution for businesses looking to optimize their communication networks as they adapt to the demands of a dynamic market. This device not only facilitates current operational requirements but also positions organizations for future growth and innovation.