ABOUT THIS GUIDE
This guide describes the3Com® Visitor and Community Network Access
Concentrator (VCN AC) Release 2.0, how to manage and operate the
VCN AC and how to troubleshoot the VCN AC once installed.
This guide is intended for technicians who are responsible for setting-up,
operating, and troubleshooting the VCN AC.
The NCU (Network Concentration Unit) name has been changed in
release II and is referred to as Visitor and Community Network Access
Concentrator.
If release notes are shipped with your product and the information there
differs from the information in this guide, follow the instructions in the
release notes.
Most user guides and release notes are available in Adobe Acrobat
Reader Portable Document Format (PDF) or HTML on the 3Com
World Wide Web site :
http://support.3com.com/
Conventions Tab l e 1 and Ta ble 2 list conventions that are used throughout this guide.
Tab le 1 Notice Icons
Icon Notice Type Description
Information note Information that describes important features or
instructions
Caution Information that alerts you to potential loss of data or
potential damage to an application, system, or device
Warning Information that alerts you to potential personal injury