3Com Cable Box 3CR856 95 User Manual

INTRODUCTION  
DIMENSIONS AND STANDARDS  
POSITIONING YOUR GATEWAY  
Safety Information  
Dimensions and Operating Conditions  
About This Guide:  
This Guide takes you through the basic steps necessary to install and configure  
your OfficeConnect Cable/DSL Secure Gateway, and establish a connection  
from your computers to the Internet. Throughout, the OfficeConnect  
Cable/DSL Secure Gateway is simply referred to as the Gateway.  
Standards  
WARNING: Please read the ‘Important Safety Information’ section in the  
Support and Safety Information sheet before you start.  
Installation Guide  
Functional:  
Safety:  
ISO 8802/3  
EMC:  
EN 55022 Class B  
EN 55024  
FCC Part 15 Class B*  
ICES-003 Class B  
VCCI Class B  
IEEE 802.3, 802.3u  
UL 1950, EN 60950  
CSA 22.2 #950,  
IEC60950  
VORSICHT: Bitte lesen Sie den Abschnitt ‘Wichtige  
Sicherheitsinformationen’ sorgfältig durch, bevor Sie das Gerät einschalten.  
Your package contains:  
One OfficeConnect Cable/DSL Secure Gateway  
AVERTISSEMENT: Veuillez lire attentivement la section "Consignes  
importantes de sécurité" avant de mettre en route.  
CNS 13438 Class A  
EN 60068 (IEC 68)  
One power adapter for use with the Gateway  
Environmental:  
Four rubber feet  
* Refer to Regulatory Notices section in the Support and Safety Information sheet  
When positioning your Gateway, ensure:  
One Ethernet cable  
It is out of direct sunlight and away from sources of heat.  
One CD-ROM containing the Gateway Discovery program and the User Guide  
Cable/DSL Gateway  
7.5 VA, 25.6 BThU/hr  
power requirement  
This Installation Guide  
Cabling is away from power lines, fluorescent lighting fixtures, and  
sources of electrical noise such as radios, transmitters and broadband  
amplifiers.  
One Support and Safety Information Sheet  
One Warranty Flyer  
Stacking Clip  
Water or moisture cannot enter the case of the unit.  
0 to 40ºC (32 to 105ºF)  
operating  
temperature  
User Guide  
Air flow around the unit and through the vents in the side of the case  
is not restricted. We recommend you provide a minimum of 25mm  
(1in.) clearance.  
License agreement  
System Requirements  
Before starting, you must ensure the following:  
Using the Rubber Feet  
0 to 90%  
(non-condensing)  
humidity  
You already have a cable or DSL broadband connection to the Internet, with  
Use the four self-adhesive rubber feet to prevent your Gateway from  
moving around on your desk or when stacking with other flat top  
OfficeConnect units. Only stick the feet to the marked areas at each  
corner of the underside of your Gateway.  
a suitable modem, and that this connection works properly. The modem  
must have an Ethernet port for connection to your Gateway.  
You have a computer that has an Ethernet connection available and is  
already correctly configured for communication with the Internet. Your  
computer must be able to connect to the Internet via the modem, and must  
have a Web browser installed.  
®
There are no other DHCP server devices on your local network that are  
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responsible for allocating IP addresses to your computers and other network-  
connected devices. Your Gateway will now perform this function by default.  
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If one or more of these conditions are not met, refer to the comprehensive  
Gateway User Guide provided for further guidance.  
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Cable/DSL Secure Gateway  
537g (1.18 lb)  
A
(3CR856-95)  
ABOUT YOUR GATEWAY  
Cable/DSL Secure Gateway - Front  
Cable/DSL Secure Gateway - Rear  
1
2
3
4
5
6
7
3CR856-95  
LAN Status  
Cable/DSL  
Ethernet  
Cable/  
DSL  
4
LAN  
Alert  
OfficeConnect Cable/DSL Secure Gateway  
1 Alert LED  
Flashing slowly (2 seconds on - 2 seconds off) - The  
Gateway has completed the Reset to Factory Defaults  
process, and is waiting for you to reset the unit. To  
do this, remove power, wait 10 seconds and then re-  
apply power. The Gateway will then enter the start-  
up sequence and resume normal operation.  
3 Four LAN Status LEDs  
green (100Mbps link) / yellow (10Mbps link)  
5 Power Adapter socket  
orange  
Only use the power adapter that is supplied with  
this Gateway. Do not use any other adapter.  
Indicates a number of different conditions, as  
described below.  
If the LED is on, the link between the port and the  
next piece of network equipment is OK. If the LED is  
flashing, the link is OK and data is being transmitted  
or received. If the LED is off, nothing is connected, or  
the connected device is switched off, or there is a  
problem with the connection (refer to the "Problem  
Solving" section).  
6 Ethernet Cable/DSL port  
Off - The Gateway is operating normally.  
Flashing quickly (1/2 second on - 1/2 second off)  
- Indicates one of the following conditions:  
Use the supplied patch cable to connect the  
Gateway to the 10/100 port on your cable or DSL  
modem. This port will automatically adjust for the  
correct speed, duplex and cable type. Which means  
you can connect to your Cable/DSL modem using  
either straight-through or crossover cables.  
On for 2 seconds, and then off - The Gateway has  
detected and prevented a hacker from attacking your  
network from the Internet.  
• The Gateway has just been started up and is  
running a self-test routine, or  
Continuously on - A fault has been detected with  
your Gateway during the start-up process. Refer to  
the main User Guide.  
4 Cable/DSL Status LED  
• The administrator has invoked the Reset to Factory  
Defaults command, or  
green (100Mbps link) / yellow (10Mbps link)  
7 Four 10/100 LAN ports  
If the LED is on, the link between the Gateway and  
the cable or DSL modem is OK. If the LED is flashing,  
the link is OK and data is being transmitted or  
received. If the LED is off, nothing is connected, the  
modem is switched off or there is a problem (refer to  
the "Problem Solving" section).  
Use suitable cable with RJ-45 connectors. You can  
connect your Gateway to a computer, or to any  
other piece of equipment that has an Ethernet  
connection (for example, a hub or a switch). These  
ports will automatically adjust for the correct speed,  
duplex mode and cable type, which means that you  
can connect devices to your Gateway using either  
straight-through or crossover cables.  
2 Power LED  
• The system software is in the process of being  
upgraded  
green  
In each of these cases, wait until the Gateway has  
completed the current operation and the alert LED  
is Off.  
Indicates that the Gateway is powered on.  
3Com Corporation, Corporate Headquarters, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145  
Copyright © 2002 3Com Corporation. All rights reserved. 3Com and OfficeConnect are registered  
trademarks of 3Com Corporation. The 3Com logo is a trademark of 3Com Corporation.  
Microsoft, MS-DOS and Windows are registered trademarks of Microsoft Corporation.  
All other company and product names may be trademarks of their respective companies.  
Part number: DIA08569-5AAA02 Published: April 2002  
 

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