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Page 16 / 104 Scroll up to view Page 11 - 15
16
4021196 Rev B
Back Panel Description
Back Panel Description
The following illustrations show the description and function of the back panel
components on the Cisco DPC3825 residential gateway.
1
POWER
—Connects the residential gateway to the AC power adapter that is
provided with your residential gateway
CAUTION:
Avoid damage to your equipment. Only use the power supply
that is provided with your residential gateway.
2
ON/OFF SWITCH (European models only)
—Allows you to power of the
residential gateway without removing the power cord
3
MAC ADDRESS LABEL
—Displays the MAC address of the residential gateway
4
USB
—Connects to selected client devices
5
ETHERNET
—Four RJ-45 Ethernet ports connect to the Ethernet port on your PC
or your home network
6
CABLE
—F-connector connects to an active cable signal from your service
provider
7
WIRELESS SETUP
—Pressing this switch initiates wireless setup, this feature
allows the user to add new Wireless Protected Setup (WPS) compliant wireless
clients to the home network
Page 17 / 104
4021196 Rev B
17
Back Panel Description
8
RESET
—A momentary pressing (1-2 seconds) of this switch reboots the EMTA.
Pressing the switch for more than ten seconds first causes a reset-to-factory-
default of all settings and then reboots the gateway
CAUTION:
The Reset button is for maintenance purposes only. Do not use
unless instructed to do so by your cable service provider. Doing
so may cause you to lose any cable modem settings you have
selected.
Page 18 / 104
18
4021196 Rev B
What Are the System Requirements for Internet Service?
What Are the System Requirements for Internet Service?
To ensure that your residential gateway operates efficiently for high-speed Internet
service, verify that all of the Internet devices on your system meet or exceed the
following minimum hardware and software requirements.
Note:
You will also need an active cable input line and an Internet connection.
Minimum System Requirements for a PC
A PC with a Pentium MMX 133 processor or greater
32 MB of RAM
Web browsing software
CD-ROM drive
Minimum System Requirements for Macintosh
MAC OS 7.5 or later
32 MB of RAM
System Requirements for an Ethernet Connection
A PC with Microsoft Windows 2000 operating system (or later) with TCP/IP
protocol installed, or an Apple Macintosh computer with TCP/IP protocol
installed
An active 10/100/1000BASE-T Ethernet network interface card (NIC) installed
Page 19 / 104
4021196 Rev B
19
How Do I Subscribe to High-Speed Internet Service?
How Do I Subscribe to High-Speed Internet Service?
Before you can use your residential gateway, you need to have a high-speed Internet
access account. If you do not have a high-speed Internet access account, you need to
set up an account with your local service provider. Choose one of the options in this
section.
I Do Not Have a High-Speed Internet Access Account
If you do
not
have a high-speed Internet access account, your service provider will
set up your account and become your Internet Service Provider (ISP). Internet access
enables you to send and receive e-mail, access the World Wide Web, and receive
other Internet services.
You will need to give your service provider the following information:
The serial number of the modem
The Media Access Control (MAC) address of the modem (CM MAC)
Other MAC address numbers as needed
These numbers appear on a bar code label located on the residential gateway. The
serial number consists of a series of alphanumeric characters preceded by
S/N
. The
MAC address consists of a series of alphanumeric characters preceded by
CM MAC
.
The following illustration shows a sample bar code label.
Write down these numbers in the space provided here.
Serial Number
_______________________
MAC Address
________________________
I Already Have an Existing High-Speed Internet Access Account
If you have an existing high-speed Internet access account, you must give your
service provider the serial number and the MAC address of the residential gateway.
Refer to the serial number and MAC address information listed previously in this
section.
Page 20 / 104
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4021196 Rev B
Where Is the Best Location for My DOCSIS Residential Gateway?
Where Is the Best Location for My DOCSIS Residential
Gateway?
The ideal location for your residential gateway is where it has access to outlets and
other devices. Think about the layout of your home or office, and consult with your
service provider to select the best location for your residential gateway. Read this
user guide thoroughly before you decide where to place your residential gateway.
Consider these recommendations:
Choose a location close to your computer if you will also use the residential
gateway for high-speed Internet service.
Choose a location that is near an existing RF coaxial connection to eliminate the
need for an additional RF coaxial outlet.
Choose a location that is relatively protected from accidental disturbance or
harm, such as a closet, basement, or other protected area.
Choose a location so that there is plenty of room to guide the cables away from
the modem without straining or crimping them.
Airflow around the residential gateway should not be restricted.
Read this user guide thoroughly before installing the residential gateway.

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