Cisco Router DPC3208 User Manual

							 
 
 Back Panel Description 
 
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Back Panel Description 
The following illustration identifies the back panel components on the DPC3208 and 
EPC3208 cable modems. Descriptions for each component follow the illustration. 
 
DPC3208 (shown with battery backup 
capability) 
 
 
EPC3208 (shown without battery backup 
capability) 
  
1 ON/OFF SWITCH (Provided only on products that carry the CE mark)—
Allows you to turn off of the cable modem without removing the power cord. 
Turning the cable modem off using this switch ensures that the unit is 
consuming no energy. 
2 TELEPHONE 1 and 2—RJ-11 telephone ports connect to home telephone wiring 
to conventional telephones or fax machines. (Products shipping in North 
America support lines 1 and 2 on port 1 when used with a two-line phone.) 
3 ETHERNET—Four RJ-45 Ethernet ports connect to the Ethernet port on your PC 
or your home network 
4 RESET—A momentary pressing (1-2 seconds) of this switch restarts (power 
cycles) the device. Pressing the switch for more than ten seconds first causes a 
reset-to-factory-default of all settings. 
 CAUTION: 
The RESET button is for maintenance purposes only. Do not use unless 
instructed to do so by your service provider. Doing so may cause you to lose 
any settings you have selected. 
5 POWER—Connects the cable modem to the AC power adapter that is provided 
with your cable modem 
Important: Use only the power supply provided with your cable modem. 
6 CABLE—F-connector connects to an active cable signal from your service 
provider 
  
						

							 
 
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Introduction 
This chapter describes how to properly install the cable modem and to 
connect the cable modem to a computer and other devices.  
 
 
2 Chapter 2 
Installing the DOCSIS Cable 
Modem 
In This Chapter 
 Installation Preparations ...................................................................... 10 
 Install the Cable Modem ...................................................................... 18  
						

							 
Chapter 2    Installing the DOCSIS Cable Modem  
 
 
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Installation Preparations 
Before installing the cable modem make sure that your system meets or exceeds the 
requirements listed in this section. Also make sure that your have prepared your 
home and home devices as described in this section.  
What Are the System Requirements for Internet Service? 
To ensure that your cable modem operates efficiently for high-speed Internet service, 
you must have an Internet-capable PC, Mac, or Internet appliance equipped with an 
Ethernet port. To access the user guide for this product, you must have a CD-ROM 
drive. 
Note: You will also need an active cable input line and an Internet connection.  
Minimum Hardware Requirements for a PC 
 A PC with a Pentium MMX 133 or greater processor recommended 
 32 MB of RAM 
 CD-ROM drive  
 Ethernet port 
Minimum Hardware Requirements for a Macintosh 
 32 MB of DRAM 
 CD-ROM drive  
 Ethernet port 
Minimum Software Requirements for an Ethernet Connection 
 Operating system with web browser, TCP/IP protocol  
What Are the Requirements for Telephone Service?  
If you intend to use the cable modem for digital telephone service, verify that your 
home meets or exceeds all of the following requirements.  
Maximum Number of Telephones 
The RJ-11 telephone-style connectors on the cable modem can each provide 
telephone service to multiple telephones, fax machines, and analog modems.   
						

							 
 
 Installation Preparations 
 
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The maximum number of telephone devices connected to each RJ-11 port is limited 
by the total Ringing Load of the telephone devices that are connected. Many 
telephone devices are marked with a Ringer Equivalent Number (REN). Each 
telephone port on the cable modem can support up to a 5 REN load.  
The sum of the REN load on all of the telephone devices attached to each port must 
not exceed 5 REN.  
Telephone Device Types 
You can use telephone devices that are not labeled with a REN number, but the 
maximum number of attached telephone devices cannot be accurately calculated. 
With telephone devices that are not labeled, each device should be connected and 
the ring signal should be tested before adding more devices. If too many telephone 
devices are attached and the ring signal can no longer be heard, telephone devices 
should be removed until the ring signal works properly. 
Telephones, fax machines, and other telephone devices use the center 2 pins of the 
RJ-11 connectors to connect to your primary telephone service. The outer 2 pins of 
the connector may be provisioned to provide a second telephone line. Contact your 
service provider for more information.  
Dialing Requirements 
All your telephones should be set to use Dual-Tone Multi-Frequency (DTMF) 
dialing. Pulse dialing may not be supported by your local service provider.  
Telephone Wiring Requirements 
The cable modem supports connecting to the interior telephone wiring as well as 
connecting directly to a telephone or fax machine. The maximum distance from the 
unit to the most distant telephone device must not exceed 1000 feet (300 meters). Use 
26-gauge twisted-pair, or larger, telephone wiring. 
Important: Connection to an existing or a new permanently installed home 
telephone wiring network should be done by a qualified installer or at the direction 
of your telephone service provider.  
What Types of Service Accounts Do I Need? 
Depending upon the features your service provider offers, you may need to establish 
one or both of the following accounts: 
 A high-speed Internet access account, if your cable modem supports an Internet 
connection 
 An account for telephone service, if your cable modem supports digital 
telephone service  
						

							 
Chapter 2    Installing the DOCSIS Cable Modem  
 
 
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Refer to one of the following topics to learn more about the types of service accounts 
that you may need to establish.  
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 information about the cable modem in 
order to use the high-speed internet feature that this product offers. Refer to 
Information Your Service Provider Needs (on page 12) to learn how to locate the 
information your service provider needs to establish a high-speed Internet access 
account for the cable modem  
To establish service, you will need to know the serial number and MAC address of 
the cable modem in order to use the high-speed internet feature that this product 
offers. Refer to Information Your Service Provider Needs (on page 12) to learn how 
to locate this information.  
Information Your Service Provider Needs 
You will need to give your service provider the following information, which is 
printed on the bar code label  attached to the device: 
 The Serial Number (S/N) of the cable modem. The serial number consists of a 
series of nine digits.  
 The CM Media Access Control (CM MAC) address of the cable modem. The CM 
MAC address consists of a series of 12 hexadecimal characters. 
The following illustration shows a typical bar coded label; the image may vary from 
the label on the actual product. 
 
Write down these numbers in the spaces provided: 
Serial Number  _______________________   
 
CM MAC Address  ________________________   
						

							 
 
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Telephone Service  
You will need to establish a telephone account with your local service provider to 
use your cable modem for telephone service.  
When you contact your service provider, you may be able to transfer your existing 
telephone numbers. If not, then your cable telephony service provider will assign a 
new telephone number to enable your voice service(s). Discuss these options with 
your telephony service provider.  
Where Is the Best Location for My Cable Modem? 
The ideal location for your cable modem 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 cable modem. Read this user 
guide thoroughly before you decide where to place your cable modem. 
Consider these recommendations: 
 Choose a location close to your computer if you will also use the cable modem 
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 so that there is plenty of room to guide the cables away from 
the cable modem without straining or crimping them. 
 Choose a location that allows adequate ventilation around the cable modem.  
 Choose a location for the cable modem that is adjacent to your telephone 
equipment if you plan on connecting your phone directly to the cable modem. 
Note: If you are using the cable modem to provide service to several telephones, 
a professional installer can connect the cable modem to your existing home 
telephone wiring.   
Install the Battery (Optional)  
Your cable modem may include one rechargeable Lithium-Ion battery to provide 
stand-by operation in the event of an AC power failure. We recommend that you 
install the battery before mounting the cable modem to a wall (if you decide to do 
so) and before installing the cable modem in your home. 
It is possible to use the cable modem without the battery. However, if you choose to 
operate the cable modem without a battery, you will not have telephone service 
during a power outage.  
For information on battery maintenance, refer to Maintaining the Battery (on page 
27).   
						

							 
Chapter 2    Installing the DOCSIS Cable Modem  
 
 
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Installing the Battery 
Installing the battery requires no tools. Follow these instructions to install the 
battery.  
 WARNING: 
Fully charged high-capacity rechargeable batteries should be handled with 
care. Replace only with the battery recommended by the manufacturer. Do not 
disassemble it or attempt to recharge the battery outside the system. Do not 
crush, puncture, dispose of in a fire, short the external contacts, or expose to 
high temperature or immerse in water or other liquids. Dispose of the battery 
in accordance with local regulations and instructions from your service 
provider. 
1 Turn the cable modem so that you are facing the side with the battery 
compartment. 
2 Gently release the latch to open the battery cover and gain access to the battery 
compartment. 
3 Insert the battery into the battery compartment. Do not force the battery into the 
compartment, but be sure to press the battery all the way in until it seats fully. 
 
4 Close the battery compartment door.  
Important: After you install the cable modem and plug it into an AC electrical 
outlet as described in Install the Cable Modem (on page 18), it can take as long as 
24 hours for the battery to charge fully. However, you can begin using your 
high-speed Internet and telephone service immediately after installation. See 
Normal Operations (AC Power Applied) (on page 24) for information on how the 
LEDs on the front of the cable modem indicate the state of the battery charge.   
						

							 
 
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How Do I Mount the Cable Modem on a Wall? (Optional) 
If you wish, you can mount the cable modem to a wall. This section describes how to 
mount the cable modem to a wall, and includes a list of equipment you will need 
along with suggestions for choosing an appropriate place to mount the cable 
modem.  
Important: If you have not already done so, insert the battery in the cable modem 
before you mount the cable modem on a wall (if desired) or before you install the 
cable modem in your home. For assistance inserting the battery in the cable modem, 
go to Install the Battery (on page 13).  
Select an Appropriate Place to Mount the Cable Modem 
You may mount the cable modem to a wall that is made of cement, wood, or 
drywall. When choosing an appropriate mounting place, refer to the following 
recommendations: 
 Ensure that the mounting location is free of obstructions on all sides, and the 
cables should be able to easily reach the cable modem without strain.  
 Leave sufficient clearance between the bottom of the cable modem and any 
flooring or shelving underneath to allow access to cabling.  
 Allow enough slack in all cables so that the cable modem can be removed for any 
required maintenance without disconnecting the cables.  
 Choose a location that allows adequate ventilation around the cable modem. 
Equipment Needed 
Verify that you have the following items that you will need to mount the cable 
modem: 
 Two wall anchors for #8 x 1-inch screws 
 Two #8 x 1-inch pan head sheet metal screws 
 Drill with a 3/16-in. wood or masonry bit, as appropriate for the wall 
composition 
 A copy of the wall-mounting illustrations shown on the following pages  
Position the Cable Modem 
Use the following illustrations to guide you in positioning the cable modem on the 
wall.  
						

							 
Chapter 2    Installing the DOCSIS Cable Modem  
 
 
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Location and Dimensions of the Wall-Mounting Slots 
The following illustration shows the location and dimensions of the wall-mounting 
slots on the bottom of the cable modem. Use this illustration as a guide for mounting 
the cable modem to the wall.