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4 TROUBLESHOOTING
Troubleshooting 4-1
Troubleshooting With the Module Status LED 4-1
Troubleshooting With the Status LEDs 4-2
Troubleshooting With the Activity LEDs 4-3
Technical Assistance 4-3
Where To Go From Here 4-4
A SPECIFICATIONS
Electrical Specifications A-1
Environmental Specifications A-1
Mechanical Specifications A-2
General Specifications A-2
50-Pin Connector and Cable A-3
Twisted Pair Connectors and Cables A-5
Twisted Pair Connectors A-5
Twisted Pair Cables A-6
Connecting Twisted Pair Cables A-6
B TECHNICAL SUPPORT
Online Technical Services B-1
World Wide Web Site B-2
3Com Bulletin Board Service B-2
Access by Analog Modem B-2
Access by Digital Modem B-2
3ComFacts Automated Fax Service B-3
3ComForum on CompuServe Online Service B-3
Support From Your Network Supplier B-4
Support From 3Com Corporation B-5
Returning Products for Repair B-6
Accessing the 3Com MIB B-6
Contacting 3Com Technical Publications B-7