3Com OfficeConnect 3C855 Installation Manual
OfficeConnect
®
Cable/DSL Gateway
(3C855)
About This Guide:
This Guide takes you through the basic steps necessary to install and configure
your OfficeConnect Cable/DSL Gateway, and establish a connection from your
computers to the Internet. Throughout, the OfficeConnect Cable/DSL
Gateway is simply referred to as the Gateway.
Your package contains:
●
One OfficeConnect Cable/DSL Gateway
●
One power adapter for use with the Gateway
●
Four rubber feet
●
One Ethernet cable, 1m (3.28 ft) long
●
One CD-ROM containing the Gateway Discovery program and the User Guide
●
This Installation Guide
●
One Support and Safety Information Sheet
●
One Warranty Flyer
System Requirements
Before starting, you must ensure the following:
●
You already have a cable or DSL broadband connection to the Internet, with
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
responsible for allocating IP addresses to your computers and other network-
connected devices. Your Gateway will now perform this function by default.
If one or more of these conditions are not met, refer to the comprehensive
Gateway User Guide provided on the accompanying CD-ROM for further guidance.
INTRODUCTION
ABOUT YOUR GATEWAY
2
1
3
4
OfficeConnect Cable/DSL Gateway
3C855
LAN Status
Cable/DSL
Alert
5
6
7
4
Ethernet
Cable/
DSL
Safety Information
WARNING: Please read the ‘Important Safety Information’ section in the
Support and Safety Information sheet before you start.
VORSICHT: Bitte lesen Sie den Abschnitt ‘Wichtige
Sicherheitsinformationen’ sorgfältig durch, bevor Sie das Gerät einschalten.
AVERTISSEMENT: Veuillez lire attentivement la section "Consignes
importantes de sécurité" avant de mettre en route.
When positioning your Gateway, ensure:
●
It is out of direct sunlight and away from sources of heat.
●
Cabling is away from power lines, fluorescent lighting fixtures, and
sources of electrical noise such as radios, transmitters and broadband
amplifiers.
●
Water or moisture cannot enter the case of the unit.
●
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.
Using the Rubber Feet
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.
3 Four LAN Status LEDs
green (100Mbps link) / yellow (10Mbps link)
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).
4 Cable/DSL Status LED
yellow
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).
5 Power Adapter socket
Only use the power adapter that is supplied with
this Gateway. Do not use any other adapter.
6 Ethernet Cable/DSL port
Use the supplied patch cable to connect the
Gateway to the 10BASE-T port on your cable or DSL
modem. This port will only operate at 10Mbps in
half-duplex mode.
7 Four 10/100 LAN ports
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). All
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.
1 Alert LED
orange
Indicates a number of different conditions, as
described below.
Off - The Gateway is operating normally.
Flashing quickly - Indicates one of the following
conditions:
• The Gateway has just been started up and is
running a self-test routine, or
• The administrator has invoked the Reset to Factory
Defaults command, or
• The system software is in the process of being
upgraded
In each of these cases, wait until the Gateway has
completed the current operation and the alert LED
is Off.
Flashing slowly - 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.
On for 2 seconds, and then off - The Gateway has
detected and prevented a hacker from attacking your
network from the Internet.
Continuously on - A fault has been detected with
your Gateway during the start-up process. Refer to
the main User Guide.
2 Power LED
green
Indicates that the Gateway is powered on.
Cable/DSL Gateway - Front
Cable/DSL Gateway - Rear
Installation Guide
POSITIONING YOUR GATEWAY
Dimensions and Operating Conditions
* Refer to Regulatory Notices section in the Support and Safety Information sheet
Cable/DSL Gateway
7 VA, 23.9 BThU/hr
power requirement
0 to 40ºC (32 to 105ºF)
operating
temperature
0 to 90%
(non-condensing)
humidity
Cable/DSL Gateway
535g (1.3 lb)
Of
fic
eC
on
ne
ct C
able
/DS
L G
ate
wa
y
3C
85
5
LA
N S
tat
us
Ca
ble
/D
SL
Alert
DIMENSIONS AND STANDARDS
Standards
Functional:
ISO 8802/3
IEEE 802.3, 802.3u
Safety:
UL 1950, EN 60950
CSA 22.2 #950,
IEC60950
EMC:
EN 55022 Class B
EN 55024
FCC Part 15 Class B*
ICES-003 Class B
VCCI Class B
CNS 13438 Class A
Environmental:
EN 60068 (IEC 68)
3Com Corporation, Corporate Headquarters, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145
Copyright © 2001 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 Micorsoft Corporation.
All other company and product names may be trademarks of their respective companies.
Part number: DIA0085-5AAA01 Published: December 2001