3Com DUA1770-0AAA04 Switch User Manual


 
4 PROBLEM SOLVING
Solving Problems Indicated by LEDs 54
Solving Hardware Problems 55
Solving Communication Problems 57
Solving Software Upgrade Problems 58
A SAFETY INFORMATION
Important Safety Information 60
L’information de Sécurité Importante 63
Wichtige Sicherheitsinformationen 66
B PIN-OUTS
Null Modem Cable 69
PC-AT Serial Cable 69
Modem Cable 70
RJ-45 Pin Assignments 70
C TECHNICAL SPECIFICATIONS
D TECHNICAL SUPPORT
Online Technical Services 75
World Wide Web Site 75
3Com Knowledgebase Web Services 75
3Com FTP Site 76
Support from Your Network Supplier 76
Support from 3Com 77
Email Support 77
Telephone Support 77
Returning Products for Repair 79
INDEX
REGULATORY NOTICES