Conventions 5
ABOUT THIS GUIDE
This guide describes the 3Com
® 
Router 3000 DSL Family of routers, and how to 
install hardware, configure and boot software, and maintain software and 
hardware. This guide also provides troubleshooting and support information for 
your router.
This guide is intended for the system or network administrator who is responsible 
for configuring, using, and managing the routers. It assumes a working 
knowledge of wide area network (WAN) operations and familiarity with 
communication protocols that are used to interconnect WANs.
Always download the Release Notes for your product from the 3Com World Wide 
Web site for the latest updates to product documentation:
http://www.3com.com
Conventions Table 1 and Table 2 list conventions that are used throughout this guide.
Table 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.
Table 2 Text Conventions
Convention Description
Screen displays This typeface represents information as it appears on the screen.
Keyboard key names If you must press two or more keys simultaneously, the key names 
are linked with a plus sign (+), for example:
    Press Ctrl+Alt+Del  The words “enter” and type”
When you see the 
word “enter” in this 
guide, you must type 
something, and then 
press Return or Enter. 
Do not press Return or 
Enter when an 
instruction simply says 
“type.”
Words in italics