Scientific Atlanta Network Card EPX2203CTM User Guide
WebSTAR™ DPX2203C™ and EPX2203C™  
VoIP Cable Modem User’s Guide  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Notice for CATV Installers  
CATV Installers Notice  
If you are a CATV installer, read the information in the box below.  
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In This Guide  
In This Guide  
IMPORTANT SAFETY INSTRUCTIONS ...................................................................................................................4  
What’s In the Carton?.................................................................................................................................................8  
Front Panel Description..............................................................................................................................................9  
Back Panel Description ............................................................................................................................................10  
Where is the Best Location for My Cable Modem?..................................................................................................11  
What are the System Requirements for Internet Service?.......................................................................................11  
How Do I Set Up My High-Speed Internet Access Account?...................................................................................12  
How Do I Connect My Devices to Use the Internet?................................................................................................13  
How Do I Configure TCP/IP Protocol? .....................................................................................................................15  
How Do I Install USB Drivers?..................................................................................................................................18  
What are the Requirements for Ethernet Network Devices?....................................................................................20  
How Do I Select and Place Ethernet Network Devices?..........................................................................................21  
How Do I Connect Ethernet Network Devices?........................................................................................................22  
What are the Requirements for USB Network Devices?..........................................................................................24  
How Do I Select and Place USB Network Devices? ................................................................................................25  
How Do I Connect USB Network Devices?..............................................................................................................26  
Troubleshooting My Internet Service Installation? ...................................................................................................28  
How Do I Use My Modem for Telephone Service? ..................................................................................................30  
Where Do I Place My Modem for Telephone Service? ............................................................................................31  
What are the Requirements for Telephone Service? ...............................................................................................32  
How Do I Install the Modem for Telephone Service?...............................................................................................33  
How Do I Maintain the Battery?................................................................................................................................36  
How Do I Mount the Cable Modem on a Wall? (Optional) .......................................................................................38  
Telephone Service Frequently Asked Questions .....................................................................................................41  
Having Difficulty?......................................................................................................................................................42  
Tips for Improved Performance................................................................................................................................44  
Front Panel LED Status Indicator Functions ............................................................................................................45  
Notices......................................................................................................................................................................48  
FCC Compliance ......................................................................................................................................................49  
For Information ..........................................................................................................................................Back Cover  
3
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
IMPORTANT SAFETY INSTRUCTIONS  
Heed Warnings  
Adhere to all warnings on the product and in the operating instructions.  
Read, Retain, and Follow These Instructions  
Read all of the instructions before you operate this product. Follow all operating  
instructions that accompany this product. Retain the instructions for future use.  
Give particular attention to all safety precautions.  
Comply With Warnings  
Avoid electric shock. Comply with all warnings and cautions in the operating  
instructions, as well as those that are affixed to this product.  
Power Warnings  
Providing a Power Source  
A label on this product indicates the correct power source for this product.  
Operate this product only from an electrical outlet with the voltage and frequency  
indicated on the product label.  
If you are uncertain of the type of power supply to your home or business,  
consult your cable service provider or your local power company.  
Grounding This Product (U.S.A. and Canada Only)  
If this product is equipped with either a three-prong (grounding pin) safety plug or  
a two-prong (polarized) safety plug, follow these safety guidelines to properly  
ground this product:  
WARNING:  
To avoid electric  
shock and fire hazard,  
match the plug and  
outlet connections  
carefully, then fully  
insert. If the plug and  
outlet do not match, or  
you cannot fully insert  
the plug, contact an  
electrician to update  
your power outlets.  
•
For a 3-prong plug (one prong on this plug is a protective grounding pin),  
insert the plug into a grounded mains, 3-prong outlet.  
Note: This plug fits only one way. If you are unable to insert this plug fully  
into the outlet, contact your electrician to replace your obsolete outlet.  
•
For a 2-prong plug (a polarized plug with one wide blade and one narrow  
blade), insert the plug into a polarized mains, 2-prong outlet in which one  
socket is wider than the other.  
Note: If you are unable to insert this plug fully into the outlet, try reversing the  
plug. If the plug still fails to fit, contact an electrician to replace your obsolete  
outlet.  
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Important Safety Instructions  
Overloading  
Do not overload electrical outlets, extension cords, or integral convenience  
receptacles as this can result in a risk of fire or electric shock. For products that  
require battery power or other sources to operate, refer to the operating  
instructions for that product.  
WARNING:  
Avoid electric shock  
and fire hazard! Do not  
overload mains AC  
outlets and extension  
cords. For products  
that require battery  
power or other power  
sources to operate  
them, refer to the  
Preventing Power Cord Damage  
Arrange all power cords so that people or pets cannot walk on the cords. Do not  
place objects on the cords. Do not lean objects against the cords. Placing objects  
on or leaning objects against cords can damage the cords. Give particular  
attention to cords at the point at which the cord connects to plugs, at the  
electrical outlets, and where the cords exit the product.  
operating instructions  
for those products.  
Usage Warnings  
Providing Ventilation  
This product has openings for ventilation that protect it from overheating. To  
ensure the reliability of this product, do the following:  
•
•
Do not block or cover these openings.  
Do not place entertainment devices (such as VCRs or DVDs), lamps, books,  
vases with liquids, or other objects on top of this product.  
•
Do not place this product in any of the following locations:  
− On a bed, sofa, rug, or similar surface  
− Near heat sources such as radiators, heat registers, stoves, or other  
products (including amplifiers) that produce heat  
− In an enclosure, such as a bookcase or rack, unless the installation  
provides proper ventilation  
Selecting a Proper Location  
Place this product in a location that is close enough to an electrical outlet and  
where the power cord is easily accessible to be disconnected from the wall outlet  
or from the rear panel of the product.  
WARNING:  
Avoid personal injury  
and damage to this  
product! An unstable  
surface may cause  
this product to fall.  
Important: The power cord is the mains power supply disconnect device.  
Place this product on a stable surface. The surface must support the size and  
weight of this product.  
Cleaning This Product  
Before cleaning this product, unplug it from the electrical outlet. Use a damp cloth  
to clean this product. Do not use a liquid cleaner or an aerosol cleaner. Do not  
use a magnetic/static cleaning device (dust remover) to clean this product.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Protecting This Product From Foreign Objects  
and Water or Moisture Damage  
WARNING:  
Never push objects of any kind into this product through openings as they may  
touch dangerous voltage points or short out parts that could result in a fire or  
electric shock.  
Avoid electric shock  
and fire hazard! Never  
push objects through  
the openings in this  
product. Foreign  
Do not expose this product to liquids or moisture. Do not place this product on a  
wet surface. Do not spill liquids on or near this product.  
objects can cause  
Do not use this product near water (such as a bathtub, washbowl, sink, or  
laundry tub), in a wet basement, or near a swimming pool.  
electrical shorts that  
can result in electric  
shock or fire. Do not  
expose this product to  
rain or moisture. Do  
not place objects filled  
with liquid, such as  
vases, on this product.  
Accessories Warnings  
WARNING:  
Avoid any potential for electric shock or fire. Do not use accessories  
with this product unless recommended by your cable service provider.  
Avoid any potential for electric shock or fire. Do not use accessories with this  
equipment unless recommended by your cable service provider.  
Handling the Battery Pack  
This product contains a replaceable battery pack. Heed the following warning  
and see the instructions later in this guide for handling, replacing, and disposing  
of the battery.  
WARNING:  
There is danger of explosion if the battery is mishandled or incorrectly  
replaced. Replace only with the same type of WebSTAR battery. Do not  
disassemble it or attempt to recharge it outside the system. Do not  
crush, puncture, dispose of in fire, short external contacts, or expose to  
water or other liquids. Dispose of the battery in accordance with local  
regulations and instructions from your cable service provider.  
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Important Safety Instructions  
Service Warnings  
Servicing This Product  
Do not open the cover of this product. If you open the cover, your warranty will be  
void. Refer all servicing to qualified personnel only. Contact your cable service  
provider for instructions.  
WARNING:  
Avoid electric shock!  
Opening or removing  
the cover may expose  
you to dangerous  
voltages. This product  
contains no user-  
serviceable parts.  
Refer all servicing to  
qualified service  
Obtaining Service for Product Damage  
For damage that requires service, unplug this product from the AC outlet. Then,  
contact your cable service provider or qualified service personnel to obtain  
service for the following conditions:  
•
•
•
If there is damage to the power-supply cord or plug  
If liquid enters the equipment  
If you drop this product, a heavy object falls on this product, or damage  
occurs to the cover of this product  
personnel.  
•
•
If you expose this product to rain or water  
If this product does not operate normally by following the operating  
instructions  
•
If this product exhibits a distinct change in performance  
Checking Product Safety  
Upon completion of any service or repairs to this product, the service technician  
must perform safety checks to determine that this product is in proper operating  
condition.  
Lightning  
For added protection for this product during a lightning storm, or when it is left  
unattended and unused for long periods of time, unplug it from the wall outlet and  
disconnect the antenna or cable system. This will prevent damage to the product  
due to lightning and power-line surges. Plugging this product into a surge  
protector may reduce the risk of damage.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
What’s In the Carton?  
When you receive your WebSTAR Cable Modem, you should check the equipment and accessories to verify that  
each item is in the carton and that each item is undamaged. The carton contains the following items:  
One power adapter with power cord  
One WebSTAR DPX2203C or  
EPX2203C Cable Modem  
One Ethernet cable (CAT5/RJ-45)  
One USB cable  
Lithium Ion cartridge battery  
(Optional)  
One CD-ROM containing the user’s  
guide and the USB drivers  
If any of these items are missing or damaged, please contact your cable service  
provider for assistance.  
Notes:  
•
You will need an optional cable signal splitter and additional standard RF  
coaxial cables if you want to connect a VCR, a Digital Home  
Communications Terminal (DHCT) or a set-top converter, or a TV to the  
same cable connection as your cable modem.  
•
Cables and other equipment needed for telephone service must be  
purchased separately. Contact your service provider to inquire about the  
equipment and cables you need for telephone service.  
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Front Panel Description  
Front Panel Description  
The front panel of your cable modem provides status LEDs that indicate how well and at what state your cable  
modem is operating. See Front Panel LED Status Indicator Functions, later in this guide, for more information  
on front panel LED status indicator functions.  
by Scientific-Atlanta, Inc.  
T11671  
1 2 3 4 5 6 7  
8 9  
1
2
3
4
POWER—Illuminates solid green to indicate that AC power is being applied to  
the cable modem. AC power must be available to recharge the battery.  
RECEIVE DATA—Blinks to indicate that the cable modem is receiving data from  
the cable network  
SEND DATA— Blinks to indicate that the cable modem is sending data to the  
cable network  
CABLE—Illuminates solid green when the cable modem is registered on the  
network and fully operational. This indicator blinks to indicate one of the following  
conditions:  
• The cable modem is booting up and not ready for data  
• The cable modem is scanning the network and attempting to register  
• The cable modem has lost registration on the network and will continue  
blinking until it registers again  
5
PC—Illuminates solid green to indicate that an Ethernet/USB carrier is present  
and blinks to indicate that Ethernet/USB data is being transferred between the  
PC and the cable modem  
6
7
8
LINE 1—Illuminates solid green when telephone line 1 is in use  
LINE 2—Illuminates solid green when telephone line 2 is in use  
LOW BATTERY—Illuminates to indicate that approximately 20 percent of charge  
is remaining in the battery.  
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REPLACE BATTERY—Illuminates to indicate that the battery could not be fully  
charged. While the battery may be able to provide some backup power, it should  
be replaced to restore maximum capacity.  
Notes:  
•
After the cable modem is successfully registered on the network, the POWER  
(LED 1) and CABLE (LED 4) LEDs illuminate continuously to indicate that the  
cable mode is active and fully operational.  
•
LEDs may behave differently when the cable modem is running on battery power  
(without AC power). Most LEDs are disabled if the unit is operating on battery  
power. In this mode, the POWER and CABLE LEDs blink to indicate that the unit  
is operating under battery power but AC power has failed.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Back Panel Description  
The following illustration shows the description and function of the back panel components on the DPX2203C and  
EPX2203C.  
LINE1 LINE2  
15VDC  
RESET  
POWER  
USB  
ETHERNET  
CABLE  
TELEPHONY  
T11672  
1
2
3
4
5
6
IMPORTANT: Do not connect your PC to both the Ethernet and USB ports at the same  
time. Your modem will not function if both the Ethernet and USB ports are connected to  
your PC at the same time.  
1
CABLE—F-Connector connects to an active cable signal from your cable  
service provider  
2
3
USB—12 Mbps USB port connects to the USB port on your PC  
ETHERNET—RJ-45 Ethernet port connects to the Ethernet port on your PC or  
your home network  
4
5
LINE1/LINE2—RJ-11 telephone ports connect to home telephone wiring to  
conventional telephones or fax machines  
RESET—Activating this switch resets the unit to factory default values and  
reboots the cable modem  
CAUTION: The Reboot EMTA button is for maintenance  
purposes only. Do not use unless instructed to do so by your cable  
or telephone service provider. Doing so may cause you to lose any  
cable modem settings you have selected.  
6
POWER—Connects the cable modem to the DC output of the AC power  
adapter that is provided with your cable modem  
CAUTION:  
Avoid damage to your equipment. Only use the AC power adapter  
and power cord that is provided with your cable modem.  
10  
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Where is the Best Location for My Cable Modem?  
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’s guide thoroughly before you decide where to place your cable modem.  
Consider these recommendations:  
•
Position your PC and cable modem so that they are located near an AC  
power outlet.  
•
Position your PC and cable modem so that they are located near an existing  
cable input connection to eliminate the need for an additional cable outlet.  
There should be plenty of room to guide the cables away from the modem  
and the PC without straining or crimping them.  
•
•
Airflow around the cable modem should not be restricted.  
Choose a location that protects the cable modem from accidental  
disturbance or harm.  
What are the System Requirements for Internet Service?  
To ensure that your cable modem 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 (Netscape or Internet Explorer)  
• CD-ROM drive  
Minimum System Requirements for Macintosh  
• MAC OS 7.5  
• 32 MB of RAM  
System Requirements for an Ethernet Connection  
• A PC with Microsoft Windows 95 operating system (or later) with TCP/IP  
protocol installed, or an Apple Macintosh computer with TCP/IP protocol  
installed  
• An active 10/100BaseT Ethernet network interface card (NIC) installed PC  
System Requirements for a USB Connection  
• A PC with Microsoft Windows 98SE, ME, 2000, or XP operating system  
• A master USB port installed in your PC  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
How Do I Set Up My High-Speed Internet Access Account?  
Before you can use your cable modem, 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 cable service provider.  
Choose one of the following two options.  
I Do Not Have a High-Speed Internet Access Account  
If you do not have a high-speed Internet access account, your cable 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. When you contact your cable  
service provider, they will ask you for the serial number, the Media Access  
Control (MAC) address, and the WLAN data MAC address of the cable modem.  
These numbers appear on a label located on the side of the cable modem. 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. See the following illustration of a sample label.  
T11699  
Serial Number  
MAC Address  
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  
cable service provider the serial number and the MAC address of the cable  
modem. Refer to the serial number and MAC address information listed  
previously in this section.  
Note: You may be able to continue to use your existing e-mail account with your  
cable modem. Contact your cable service provider for more information.  
12  
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How Do I Connect My Devices to Use the Internet?  
How Do I Connect My Devices to Use the Internet?  
You can use your cable modem to access the Internet, and you can share that Internet connection with other  
Internet devices in your home or office. Sharing one connection among many devices is called networking.  
Connecting and Installing Internet Devices  
You must connect and install your cable modem correctly to access the Internet.  
Professional installation may be available. Contact your local cable service  
provider for further assistance.  
To connect devices  
The following diagram illustrates one of the various connection options that are  
available to you.  
PC  
Ethernet  
Cable  
RF  
Cable  
Power  
Supply  
Home Telephone Wiring  
Line 1  
Cable  
Splitter  
Power Supply  
Cable-Ready TV,  
VCR, or Set-Top  
Converter  
CH+  
VOLñ  
VOL+  
MENU  
GUIDE  
INFO  
A/B  
POWER  
CHñ  
RF  
Cables  
BYPASS  
Home Telephone Wiring  
Line 2  
T11700  
13  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
To install the cable modem for high-speed data service  
1.  
2.  
Power off your PC and unplug it from the power source.  
WARNING:  
Connect your PC to either the ETHERNET port or the USB port using the  
appropriate data cable. Do not connect your PC to both the Ethernet and  
USB ports at the same time. You can connect two separate PCs to the  
cable modem at the same time by connecting one PC to the Ethernet port  
and one PC to the USB port.  
To avoid personal  
injury or damage to  
your equipment,  
follow these steps in  
the exact order shown.  
3.  
4.  
5.  
Connect the active RF coaxial cable to the CABLE connector. Use an  
optional cable signal splitter to add a TV, a DHCT or set-top converter, or  
a VCR.  
Insert the AC power adapter cord into the DC POWER connector on the  
back of the cable modem, and then plug the power adapter into an AC  
power source.  
Plug in and power on your networked devices including your PC. The  
cable modem will then begin an automatic search to locate and sign on to  
the broadband data network. This process may take up to 5 minutes. The  
modem will be ready for use when the CABLE LED status indicator on  
the front panel stops blinking and illuminates continuously.  
6.  
The next step in setting up your cable modem is to configure your  
Internet devices for Internet access. Choose one of the following options:  
• If you want to use Ethernet connections, you must configure the  
TCP/IP protocol. To configure the TCP/IP protocol go to How Do I  
Configure TCP/IP Protocol, next in this guide.  
• If you want to use USB connections, you must install the USB drivers.  
To install the USB Drivers for USB go to How Do I Install USB  
Drivers, later in this guide.  
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How Do I Configure TCP/IP Protocol?  
How Do I Configure TCP/IP Protocol?  
To configure TCP/IP protocol, you need to have an Ethernet Network Interface Card (NIC) with TCP/IP  
communications protocol installed on your system. TCP/IP is a communications protocol used to access the  
Internet. This section contains instructions for configuring TCP/IP on your Internet devices to operate with the  
cable modem in Microsoft Windows or Macintosh environments.  
Configuring TCP/IP on Your Internet Devices  
TCP/IP protocol in a Microsoft Windows environment is different for each  
Windows version. Follow the appropriate instructions in this section for your  
operating system.  
To configure Windows 95, 98, 98SE, or ME systems  
1.  
2.  
3.  
Click Start, select Settings, and choose Control Panel.  
Double-click the Network icon in the Control Panel window.  
Read the list of installed network components under the Configuration  
tab to verify that your PC contains the TCP/IP protocol/Ethernet adapter.  
4.  
Is TCP/IP protocol listed in the installed network components list?  
• If yes, go to step 7.  
• If no, click Add, click Protocol, click Add, and then go to step 5.  
Click Microsoft in the Manufacturers list.  
5.  
6.  
7.  
Click TCP/IP in the Network Protocols list, and then click OK.  
Click the TCP/IP Ethernet Adapter protocol, and then choose  
Properties.  
8.  
9.  
Click the IP Address tab, and then select Obtain an IP address  
automatically.  
Click the Gateway tab and verify that these fields are empty. If they are  
not empty, highlight and delete all information from the fields.  
10. Click the DNS Configuration tab, and then select Disable DNS.  
11. Click OK.  
12. Click OK when the system finishes copying the files, and then close all  
networking windows.  
Click YES to restart your computer when the System Settings Change  
dialog box opens. The computer restarts. The TCP/IP protocol is now  
configured on your PC and your Ethernet devices are ready for use.  
13.  
14. Try to access the Internet. If you cannot access the Internet, go to  
Having Difficulty, later in this guide. If you still cannot access the  
Internet, contact your cable service provider for further assistance.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
To configure Windows 2000 systems  
1.  
2.  
Click Start, select Settings, and choose Network and Dial-up  
Connections.  
Double-click the Local Area Connection icon in the Network and Dial-up  
Connections window.  
3.  
4.  
Click Properties in the Local Area Connection Status window.  
Click Internet Protocol (TCP/IP) in the Local Area Connection Properties  
window, and then click Properties.  
5.  
6.  
7.  
Select both Obtain an IP address automatically and Obtain DNS  
server address automatically in the Internet Protocol (TCP/IP)  
Properties window, and then click OK.  
Click Yes to restart your computer when the Local Network window  
opens. The computer restarts. The TCP/IP protocol is now configured on  
your PC and your Ethernet devices are ready for use.  
Try to access the Internet. If you cannot access the Internet, go to  
Having Difficulty, later in this guide. If you still cannot access the  
Internet, contact your cable service provider for further assistance.  
To configure Windows XP systems  
1.  
2.  
Click Start, select Connect to, and choose Show all connections.  
Double-click the Local Area Connection icon in the LAN or High-Speed  
Internet section of the Network Connections window.  
3.  
4.  
Click Properties in the Local Area Connection Status window.  
Click Internet Protocol (TCP/IP), and then click Properties in the Local  
Area Connection Properties window.  
5.  
6.  
7.  
Select both Obtain an IP address automatically and Obtain DNS  
server address automatically in the Internet Protocol (TCP/IP)  
Properties window, and then click OK.  
Click Yes to restart your computer when the Local Network window  
opens. The computer restarts. The TCP/IP protocol is now configured on  
your PC and your Ethernet devices are ready for use.  
Try to access the Internet. If you cannot access the Internet, go to  
Having Difficulty, later in this guide. If you still cannot access the  
Internet, contact your cable service provider for further assistance.  
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How Do I Configure TCP/IP Protocol?  
To configure Macintosh systems  
1.  
2.  
Click the Apple icon in the upper left corner of the Finder. Scroll down to  
Control Panels, and then click TCP/IP.  
Click Edit on the Finder (gray bar) at the top of the screen. Scroll down to  
the bottom of the menu, and then click User Mode.  
3.  
4.  
Click Advanced in the User Mode window, and then click OK.  
Click the Up/Down selector arrows located to the right of the Connect Via  
section of the TCP/IP window, and then click Using DHCP Server.  
5.  
Click Options in the TCP/IP window, and then click Active in the TCP/IP  
Options window.  
Note: In some cases, the Load only when needed option will not  
appear. If it appears, select the option. A check mark appears in the  
option.  
6.  
7.  
Verify that the Use 802.3 option located in the upper right corner of the  
TCP/IP window is unchecked. If there is a check mark in the option,  
deselect the option, and then click Info in the lower left corner.  
Is there a Hardware Address listed in this window?  
• If yes, click OK. To close the TCP/IP Control Panel window, click File,  
and then scroll down to click Close. You have completed this  
procedure.  
• If no, you must power off your Macintosh.  
8.  
9.  
With the power off, simultaneously press and hold down the Command  
(Apple), Option, P, and R keys on your keyboard. Keeping those keys  
pressed down, power on your Macintosh but do not release these keys  
until you hear the Apple chime.  
Continue pressing these keys for at least three chimes, then release the  
keys and allow the computer to restart.  
10. When your computer fully reboots, repeat steps 1 through 7 to verify that  
all TCP/IP settings are correct. If your computer still does not have a  
Hardware Address, contact your authorized Apple dealer or Apple  
technical support center for further assistance.  
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How Do I Install USB Drivers?  
To install USB drivers, your PC must be equipped with a USB network interface and a Microsoft Windows 98SE,  
ME, 2000, or XP operating system. This section contains instructions for installing the USB drivers for the cable  
modem.  
Note: If you are not using the USB interface, skip this section.  
Installing USB Drivers  
The USB driver installation procedures are different for each operating system.  
Follow the appropriate instructions in this section for your operating system.  
To install Windows 98SE and Windows ME USB drivers  
1.  
2.  
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM  
drive of your PC.  
Wait until the POWER and CABLE LED status indicators on the cable  
modem illuminate solid green.  
Result: The Add New Hardware Wizard window opens.  
3.  
4.  
Click Next in the Add New Hardware Wizard window.  
Select Search for the best driver for your device (Recommended) in  
the Add New Hardware Wizard window, and then click Next.  
5.  
6.  
7.  
Select CD-ROM drive in the Add New Hardware Wizard window, and  
then click Next.  
Select The updated driver (Recommended) in the Add New Hardware  
Wizard window, and then click Next.  
Click Next in the Add New Hardware Wizard window. The Copying Files  
window opens. After 10 to 20 seconds have passed, the Add New  
Hardware Wizard window reopens.  
Click Finish. The USB driver installation is complete.  
8.  
9.  
Click Yes in the System Settings Change window to restart your  
computer. The computer restarts. The USB drivers are now installed on  
your PC and your USB devices are ready for use.  
10. Try to access the Internet. If you cannot access the Internet, go to  
Having Difficulty, later in this guide. If you still cannot access the  
Internet, contact your cable service provider for further assistance.  
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How Do I Install USB Drivers?  
To install Windows 2000 drivers  
1.  
2.  
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM  
drive of your PC.  
Wait until the POWER and CABLE LED status indicators on the front  
panel of the cable modem illuminate solid green.  
3.  
4.  
Click Next in the Found New Hardware Wizard window.  
Select Search for a suitable driver for my device (recommended) in  
the Found New Hardware Wizard window, and then click Next.  
5.  
6.  
7.  
Select CD-ROM drives in the Found New Hardware Wizard window, and  
then click Next.  
Click Next in the Found New Hardware Wizard window. The system  
searches for the driver file for your hardware device.  
After the system finds the USB driver, the Digital Signature Not Found  
window opens and displays a confirmation message to continue the  
installation.  
8.  
Click Yes to continue the installation. The Found New Hardware Wizard  
window reopens with a message that the installation is complete.  
9.  
Click Finish to close the Found New Hardware Wizard window. The USB  
drivers are installed on your PC and your USB devices are ready for use.  
Try to access the Internet. If you cannot access the Internet, go to  
Having Difficulty, later in this guide. If you still cannot access the  
Internet, contact your cable service provider for further assistance.  
10.  
To install Windows XP drivers  
1.  
2.  
3.  
4.  
5.  
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM  
drive of your PC.  
Wait until the POWER and CABLE LED status indicators on the front panel  
of the cable modem illuminate solid green.  
Select Install from a list or specific location (Advanced) in the Found  
New Hardware Wizard window, and then click Next.  
Select Search removable media (floppy, CD-ROM) in the Found New  
Hardware Wizard window, and then click Next.  
Click Continue Anyway in the Hardware Installation window to continue  
the installation. The Found New Hardware Wizard window reopens with a  
message that the installation has finished.  
6.  
7.  
Click Finish to close the Found New Hardware Wizard window. The USB  
drivers are installed on your PC and your USB devices are ready for use.  
Try to access the Internet. If you cannot access the Internet, go to Having  
Difficulty, later in this guide. If you still cannot access the Internet, contact  
your cable service provider for further assistance.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
What are the Requirements for Ethernet Network Devices?  
How Many Ethernet Network Devices Can I Connect?  
The WebSTAR Cable Modems can support several Ethernet network devices  
using external Ethernet hubs that must be purchased separately. The maximum  
number of Ethernet network devices supported is by the cable modem is 63.  
However, under normal circumstances, the number of devices connected should  
be a much lower number. Contact your service provider for more information on  
the maximum number of Ethernet network devices to connect to the cable  
modem in order to maintain optimal network performance.  
What are the Wiring Requirements for Ethernet Networking?  
A number of factors can impact the practical limit of the network. Although the  
WebSTAR Cable Modem is designed to support several Ethernet network  
devices, it is important to view the characteristics of the entire network and not  
just each individual node. The theoretical distance between two 10/100BaseT  
CAT-5 Ethernet hubs is 382 feet (100 meters). Contact your service provider or  
consult the documentation for your Ethernet network devices for more  
information.  
Note: Scientific-Atlanta recommends that you use CAT-5 Ethernet cables.  
Do I Need to Configure the TCP/IP Protocol on My Computer?  
In order for you to use Ethernet network devices on your network, you must have  
the TCP/IP protocol properly configured on your PC. Refer to How Do I  
Configure TCP/IP Protocol, earlier in this guide, for detailed information on  
configuring the TCP/IP protocol.  
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How Do I Select and Place Ethernet Network Devices?  
How Do I Select and Place Ethernet Network Devices?  
You can use a large variety of Ethernet network devices with your cable modem. These include NIC cards, hubs,  
bridges, etc. Contact your service provider or consult the documentation for your Ethernet network devices for  
more information on configuring Ethernet network devices.  
Where is the Best Location for My Ethernet Network Devices?  
You should work with your service provider to choose the best location for your  
Ethernet network devices. Consider these recommendations:  
•
•
•
•
Location of two-way cable outlets  
Distance of the Ethernet network devices from the cable modem  
Location of computers and other equipment from AC power outlets  
Ease of running Ethernet cable to the Ethernet network devices  
Now that you have selected a location for your Ethernet network devices, the  
next step is to place and connect your Ethernet network devices. Go to How Do I  
Connect Ethernet Network Devices, next in this guide.  
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How Do I Connect Ethernet Network Devices?  
Connecting Ethernet Devices  
You must connect your Ethernet devices for use with the cable modem.  
Professional installation may be available. Contact your local cable service  
provider for further assistance.  
The following diagram illustrates one of the various Ethernet network connection  
options that are available to you.  
PC  
Ethernet  
Cable  
RF  
Cable  
Power  
Supply  
Home Telephone Wiring  
Line 1  
Cable  
Splitter  
Power Supply  
Cable-Ready TV,  
VCR, or Set-Top  
Converter  
CH+  
VOLñ  
VOL+  
MENU  
GUIDE  
INFO  
A/B  
POWER  
CHñ  
RF  
Cables  
BYPASS  
Home Telephone Wiring  
Line 2  
T11700  
22  
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How Do I Connect Ethernet Network Devices?  
To connect Ethernet devices  
Read the warnings and caution on this page. Then, follow the subsequent  
installation procedures to ensure proper cable modem operation when  
connecting Ethernet network devices.  
WARNING:  
• Hazardous electrical  
voltages can be  
present on any  
connected wiring.  
Ethernet wiring and  
connections must be  
properly insulated to  
prevent electrical  
shock. Disconnect  
power from the  
1.  
Select locations for Ethernet network devices. For more information, see  
How Do I Select and Place Ethernet Network Devices, earlier in this  
guide.  
2.  
3.  
Connect the Ethernet port on the cable modem to your PC.  
Connect additional Ethernet network devices by connecting an Ethernet  
hub or router to the cable modem.  
4.  
5.  
6.  
Connect the active RF coaxial cable to the CABLE connector on the back  
of the cable modem. Use an optional cable signal splitter to add a TV, a  
DHCT or set-top converter, or a VCR.  
cable modem before  
attempting to  
connect to any  
After all connections are complete, insert the AC power adapter cord into  
the DC POWER connector on the back of the cable modem, and then  
plug the power adapter into an AC power source.  
device.  
• To avoid personal  
injury, follow these  
steps in the exact  
order shown.  
The cable modem begins an automatic search to locate and sign on to  
the network. In some unusual circumstances, this process may take up to  
5 minutes. The cable modem is ready for use when the CABLE status  
indicator on the front panel stops blinking and illuminates continuously.  
7.  
Verify that all Ethernet network devices are working properly.  
Note: You will not be able to check the front panel LED status indicator  
on the cable modem until after one or more Ethernet network devices are  
connected to the cable modem.  
CAUTION:  
To prevent possible  
damage to the  
equipment, disconnect  
any other service  
before connecting  
your cable modem to  
other devices.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
What are the Requirements for USB Network Devices?  
How Many USB Devices Can I Connect?  
Contact your service provider for more information on the maximum number of  
USB network devices to connect to the cable modem in order to maintain optimal  
network performance.  
What are the Wiring Requirements?  
Several factors can impact the practical limit of the network. Use correct USB  
cables. Contact your service provider or consult the documentation for your USB  
network device for more information.  
Do I Need to Install USB Drivers on My Computer?  
To use USB network devices, you must have the correct USB drivers installed on  
your PC. Refer to How Do I Install USB Drivers, earlier in this guide, for  
information on installing USB drivers.  
24  
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How Do I Select and Place USB Network Devices?  
How Do I Select and Place USB Network Devices?  
You can use a large variety of USB network devices with your cable modem. These include desktop computers,  
laptop computers, devices with USB ports, and USB adapters. Contact your cable service provider or consult the  
documentation for your USB network devices for more information on selecting USB network devices.  
Where is the Best Location for My USB Network Devices?  
You should work with your service provider to choose the best location for your  
USB network devices. Consider these recommendations:  
•
•
•
•
Location of two-way coaxial cable outlets  
Distance of the USB network devices from the cable modem  
Location of computers and other equipment from AC power outlets  
Ease of running USB cable to the USB network devices  
Now that you have selected a location for your USB network devices, the next  
step is to place and connect your USB network devices. Go to How Do I  
Connect USB Network Devices, next in this guide.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
How Do I Connect USB Network Devices?  
Connecting USB Devices  
You must connect your USB devices for use with your cable modem.  
Professional installation may be available. Contact your local service provider for  
further assistance.  
The following diagram illustrates one of the various USB connection options that  
are available to you.  
PC  
USB  
Cable  
RF  
Cable  
Power  
Supply  
Home Telephone Wiring  
Line 1  
Cable  
Splitter  
Power Supply  
Cable-Ready TV,  
VCR, or Set-Top  
Converter  
CH+  
VOLñ  
VOL+  
MENU  
GUIDE  
INFO  
A/B  
POWER  
CHñ  
RF  
Cables  
BYPASS  
Home Telephone Wiring  
Line 2  
T11726  
26  
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How Do I Connect USB Network Devices?  
To connect USB devices  
Read the warnings and caution on this page. Then, follow the subsequent  
installation procedures to ensure proper cable modem operation when  
connecting USB network devices.  
WARNING:  
• Hazardous electrical  
voltages can be  
present on any  
connected wiring.  
USB wiring and  
connections must be  
properly insulated to  
prevent electrical  
shock. Disconnect  
power from the  
Note: Verify that you have installed the USB drivers on your PC before  
continuing with these instructions. See How Do I Install USB Drivers, earlier in  
this guide, for more information on installing the USB drivers.  
1.  
Select locations for USB network devices. For more information, see  
How Do I Select and Place USB Network Devices, earlier in this guide.  
2.  
3.  
Connect the USB port on the cable modem to your computer.  
Connect one or more USB network device to the cable modem.  
Note: If you want to connect more than one USB network device to the  
cable modem or to your computer, you will need to purchase and install a  
USB hub.  
cable modem before  
attempting to  
connect to any  
device.  
4.  
5.  
6.  
Connect the active RF coaxial cable to the CABLE connector on the back  
of the cable modem. Use an optional cable signal splitter to add a TV, a  
DHCT or set-top converter, or a VCR.  
• To avoid personal  
injury, follow these  
steps in the exact  
order shown.  
After all connections are complete, insert the AC power adapter cord into  
the DC POWER connector on the back of the cable modem, and then  
plug the power adapter into an AC power source.  
The cable modem begins an automatic search to locate and sign on to  
the network that provides the telephone service. This process may take  
up to 5 minutes. The cable modem is ready for use when the CABLE  
status indicator on the front panel stops blinking and illuminates  
continuously.  
CAUTION:  
To prevent possible  
damage to the  
equipment, disconnect  
any other service  
before connecting  
your cable modem to  
other devices.  
7.  
Verify that all USB devices are working properly.  
Note: You will not be able to check the front panel LED status indicator  
on the cable modem until after at least one USB network device is  
connected and operating on the network.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Troubleshooting My Internet Service Installation  
I cannot connect to the Internet  
•
Verify that the plug to your cable modem AC adapter is properly inserted into  
an electrical outlet.  
•
Verify that your cable modem AC adapter is not plugged into an electrical  
outlet that is controlled by a wall switch. If a wall switch controls the electrical  
outlet, make sure the switch is in the ON position.  
•
•
Verify that the POWER, CABLE, and the appropriate front panel LED status  
indicators for your network connection are illuminated.  
Verify that all cables are properly connected, and that you are using the  
correct cables.  
•
•
Verify that your cable service is active and that it supports two-way service.  
Verify that TCP/IP is properly installed and configured on all devices if you  
are using the Ethernet connections.  
•
•
•
Verify that you have followed the procedure in How Do I Install USB Drivers,  
earlier in this guide, if you are using the USB connection.  
Verify that you have called your cable service provider and given them the  
serial number and MAC address of your cable modem.  
If you are using a cable signal splitter so that you can connect the cable  
signal to other devices, remove the splitter and reconnect the cable so that  
the cable modem is connected directly to the main cable input. If the cable  
modem now functions properly, the cable signal splitter may be defective and  
may need to be replaced.  
My cable modem does not register an Ethernet connection  
Even new devices do not always have Ethernet capabilities. Verify that your  
device has a 10/100BaseT Ethernet card and that the Ethernet driver software is  
properly installed. If you purchase and install an Ethernet card, follow the  
installation instructions very carefully.  
My cable modem does not register a cable connection  
•
•
•
The cable modem works with a standard, 75-ohm, RF coaxial cable. If you  
are using a different cable, your cable modem will not function properly.  
Contact your service provider to determine if you are using the correct cable.  
You may need to renew the IP address on your PC. Refer to I need to  
renew the IP address on my PC, next in this section, for instructions on  
how to renew the IP address for your particular operating system.  
Your USB interface may be malfunctioning. Refer to the troubleshooting  
information in your USB documentation.  
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Troubleshooting My Internet Service Installation  
I need to renew the IP address on my PC  
If your PC cannot access the Internet after the cable modem is online, it is  
possible that your PC did not renew its IP address. Follow the appropriate  
instructions in this section for your operating system to renew the IP address on  
your PC.  
To renew the IP Address for Windows 95, 98, 98SE, and ME systems  
1.  
2.  
Click Start, and then click Run to open the Run window.  
Type winipcfg in the Open field, and click OK to execute the winipcfg  
command. The IP Configuration window opens.  
3.  
Click the down arrow to the right of the top field, and select the Ethernet  
adapter that is installed on your PC. The IP Configuration window  
displays the Ethernet adapter information.  
4.  
5.  
Click Release, and then click Renew. The IP Configuration window  
displays a new IP address.  
Click OK to close the IP Configuration window, you have completed this  
procedure.  
Note: If you cannot access the Internet, contact your cable service  
provider for further assistance.  
To renew the IP Address for Windows 2000, NT, or XP systems  
1.  
2.  
Open a Command Prompt (DOS) window.  
Type ipconfig/release at the C:/ prompt and press Enter. The system  
releases the IP address.  
3.  
4.  
Type ipconfig/renew at the C:/ prompt and press Enter. The system  
displays a new IP address.  
Click the X in the upper-right corner of the window to close the Command  
Prompt window. You have completed this procedure.  
Note: If you cannot access the Internet, contact your service provider for  
further assistance.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
How Do I Use My Modem for Telephone Service?  
Contacting Your Local Service Provider  
You need to set up a telephone account with your local cable service provider in  
order to use your cable modem for telephone service. When you contact your  
cable service provider, verify the following conditions:  
•
Does the cable service to your home support two-way, DOCSIS-compatible  
cable modem access? If your cable service provider does not provide two-  
way service, this modem will not be able to communicate with your cable  
service provider’s Internet access and telephone services.  
•
Can you transfer your existing telephone numbers from another telephony  
service provider to your current cable telephony service provider? In some  
areas, you may be able to transfer your existing telephone numbers, or your  
cable telephony service provider will assign a new telephone number for  
each current or additional active telephone line. Discuss these options with  
your cable telephony service provider.  
You may also need to give your cable service provider the following information:  
•
•
The serial number of the modem  
The Media Access Control (MAC) address of the modem  
These numbers appear on a bar code label located on the cable modem. 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.  
T11699  
Serial Number  
MAC Address  
Write down these numbers in the space provided here.  
Serial Number _______________________  
MAC Address ________________________  
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Where Do I Place My Modem for Telephone Service?  
Where Do I Place My Modem for Telephone Service?  
If you are planning to use your modem for telephone service, you should work with your cable telephony provider  
to choose the best location for your modem.  
Where is the Best Location for My Modem?  
When choosing a location for your modem, consider the following  
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 for the cable modem that is adjacent to your telephone  
equipment if you are using only one or two pieces of telephone equipment.  
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. To minimize changes to the home telephone wiring, you may  
want to locate the cable modem near an existing telephone outlet. See How Do I  
Install the Cable Modem to Provide Telephone Service, later in this guide, for  
further instructions.  
•
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 cable modem should not be restricted.  
Read this user’s guide thoroughly before installing the cable modem.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
What are the Requirements for Telephone Service?  
This section provides hardware and software requirements for utilizing your cable modem for telephone service.  
Number of Telephone Devices  
The RJ-11 telephone-style connectors on the cable modem can each provide  
telephone service to multiple telephones, fax machines, and analog modems.  
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 additional 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 should use the center 2  
pins of the RJ-11 connectors to connect to the cable modem telephone ports.  
Some telephones use other pins on the RJ-11 connectors and require adapters  
in order to work.  
Dialing Requirements  
All your telephones should be set to use DTMF dialing. Pulse dialing is typically  
not enabled by your local provider.  
Telephone Wiring Requirements  
The cable modem is designed to support interior telephone wiring. 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 must be done by a qualified installer.  
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How Do I Install the Modem for Telephone Service?  
How Do I Install the Modem for Telephone Service?  
The cable modem can be used to provide telephone service for one or two telephone lines. This section describes  
how to connect a single telephone, fax machine, analog telephone modem, or other telephone device to each  
telephone port on the cable modem.  
Important: Connecting the cable modem permanently to the installed home  
telephone wiring is not covered by this document.  
Installing the Cable Modem to Provide Telephone Service  
Heed the following warnings, and then follow the subsequent installation  
procedures to ensure proper cable modem installation and configuration for  
providing telephone service.  
WARNING:  
• To avoid personal injury, follow the installation instructions in the exact  
order shown.  
• Telephone connections to an installed home telephone wiring network  
must be done by a qualified installer. The cable telephone service  
provider may offer professional installation and connection to the home  
telephone wiring network. A fee may be charged for this service.  
• Hazardous electrical voltages can exist on the telephone ports on the  
cable modem and can be present on any connected wiring. Telephone  
wiring and connections must be properly insulated to prevent electrical  
shock. Disconnect power from the cable modem before attempting to  
connect to any device.  
• To prevent possible damage to equipment, disconnect any other  
telephone service before connecting your cable modem to the same  
wires.  
Note: Professional installation may be available. Contact your service provider  
for further assistance.  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Installation Diagram  
The following diagram illustrates one of the various connection options that are  
available to you.  
PC  
Ethernet  
Cable  
RF  
Cable  
Power  
Supply  
Home Telephone Wiring  
Line 1  
Cable  
Splitter  
Power Supply  
Cable-Ready TV,  
VCR, or Set-Top  
Converter  
CH+  
VOLñ  
VOL+  
MENU  
GUIDE  
INFO  
A/B  
POWER  
CHñ  
RF  
Cables  
B
Y
P
A
S
S
Home Telephone Wiring  
Line 2  
T11700  
To install the cable modem for telephone service  
1. Connect a telephone, fax machine, or analog modem to each of the  
appropriate RJ-11 ports on the cable modem.  
Notes:  
•
•
•
The cable modem provides one line of telephone service on each of the  
RJ-11 connectors.  
Service must be set up and enabled by the cable telephone service  
provider.  
The two center conductors (pins 3 and 4) on the RJ-11 connector  
provide electrical connections to directly attached telephone devices or  
to a permanently installed in-home telephone wiring network.  
•
•
The telephone port labeled Line 1 also supports multi-line telephone  
devices. Line 1 is supported on pins 3 and 4, and Line 2 is supported on  
pins 2 and 5.  
The use of telephones that require electrical connections to other RJ-11  
pins requires an adapter.  
2. After all telephone connections are complete, insert the AC power adapter  
cord into the DC power connector on the back of the cable modem, and then  
plug the power adapter into an AC power source.  
3. Connect the active RF coaxial cable to the CABLE connector on the back of  
the cable modem. The cable modem begins an automatic search to locate  
and sign on to the network that provides the telephone service. This process  
may take up to 5 minutes. The modem will be ready for use when the  
CABLE light on the front panel stops blinking and illuminates continuously.  
Note: Use an optional cable signal splitter to add a TV, a DHCT or set-top  
converter, or a VCR.  
34  
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How Do I Install the Modem for Telephone Service?  
4. Test your telephone service by lifting the receiver of each attached telephone  
to verify that the dial tone can be heard and that you can make and receive  
telephone calls.  
Note: This process may take several minutes. The Line 1 or the Line 2 front  
panel light illuminates when the attached device is “off the hook.”  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
How Do I Maintain the Battery?  
Your modem includes a rechargeable Lithium-Ion battery to provide stand-by operation in the event of an AC  
power failure. You can replace the battery without the use of any tools.  
Charging the Battery  
WARNING:  
The battery begins to charge automatically as soon as you attach the modem to  
the 15 V DC power source. When you first plug in the modem, the POWER LED  
status indicator illuminates.  
There is danger of  
explosion if the battery  
is mishandled or  
incorrectly replaced.  
Replace only with the  
same type of WebSTAR  
battery. Do not  
Note: It may take as long as 10 hours for the battery to charge fully.  
Using the Modem Without a Battery  
disassemble it or  
If you want, you can use the modem without a battery. If you need to remove the  
battery, follow the procedures found in Removing and Replacing the Battery,  
later in this section.  
attempt to recharge the  
battery outside the  
system. Do not crush,  
puncture, dispose of in  
a fire, short external  
contacts, or expose to  
water or other liquids.  
Dispose of the battery  
in accordance with  
local regulations and  
instructions from your  
service provider.  
Important: If you choose to operate your modem without a battery, you risk  
losing your telephone service during a power outage.  
Replacing the Battery  
Under normal circumstances, the battery should last for several years. The  
REPLACE BATTERY LED status indicator illuminates to indicate that the battery  
should be replaced soon. Contact your service provide to obtain a replacement  
battery and for disposal instructions.  
Note: Follow the steps found in Removing and Replacing the Battery, later in this  
section, to remove and replace the battery.  
36  
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How Do I Maintain the Battery?  
Location of the Battery  
The following illustration shows the location of the battery on the DPX2203C and  
the EPC2203C.  
by Scientific-Atlanta, Inc.  
Unlocked  
Locked  
T11714  
Removing and Replacing the Battery  
Follow these steps to remove and replace the battery. You can remove and  
replace the battery without disconnecting the AC power source.  
1. Gently press the battery compartment cover on the front of the modem to  
open the cover and gain access to the battery compartment.  
2. Move the battery lock upward and to the right to the Unlocked position.  
3. Grasp the plastic strip on the front of the battery and gently slide the battery  
forward to remove it from the battery compartment.  
4. Insert a new battery into the battery compartment and close the battery  
compartment cover.  
Important: It may take as long as 10 hours for the battery to charge fully.  
Note: Dispose of the battery in accordance with local regulations and  
instructions from your service provider.  
5. Slide the battery lock downward and to the left to the Locked position.  
6. Gently raise the battery compartment door until it clicks and closes securely.  
37  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
How Do I Mount the Cable Modem on a Wall? (Optional)  
You can mount the cable modem on a wall using two wall anchors, two screws, and the mounting slots located on  
the unit. The modem can only be mounted horizontally.  
Before You Begin  
Before you begin, choose an appropriate mounting place. The wall can be made  
of cement, wood, or drywall. The mounting location should be 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. In  
addition, leave enough slack in all cables so that the cable modem can be  
removed for any required maintenance without disconnecting the cables. Also,  
verify that you have the following items:  
•
•
•
Two wall anchors for #8 x 1 inch screws  
Two #8 x1 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 template shown on the following page  
Mount the modem as shown in the following illustration.  
Horizontal Mounting  
Mounting  
Screws  
Mounting  
Holes  
Concrete,  
Wood, or  
Drywall  
1/4 in.  
(0.65 cm)  
Screw  
T11736  
38  
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How Do I Mount the Cable Modem on a Wall? (Optional)  
Using the Wall-Mounting Template  
The following illustration shows the wall-mounting template. Copy this page and  
use the measurements on the wall-mounting template as a guide to mark the  
mounting screw locations.  
DPX2203 Wall Mount Template  
1.2"  
30.48 mm  
.6"  
15.24 mm  
.6"  
15.24 mm  
Mounting  
Slot  
Mounting  
Slot  
1.3"  
33.02 mm  
4.0"  
101.6 mm  
1.3"  
33.02 mm  
Not Drawn To Scale  
T11737  
39  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Mounting the Cable Modem on a Wall  
To mount the cable modem on a wall  
Complete these steps to mount the cable modem on the wall.  
1. Using a drill with a 3/16-in. bit, drill two holes in the wall at the exact same  
height and 4 inches apart.  
Note: The graphic on the preceding page illustrates the location of the  
mounting holes on the back of the cable modem.  
2. Are you mounting the cable modem into a drywall or concrete surface where  
a wooden stud is available?  
•
If no, drive the anchor bolts into the wall, and install the mounting screws  
into the anchor bolts leaving a gap of about 1/4-in. between the screw  
head and the wall. Then, go to step 4.  
•
If yes, go to step 3.  
3. Install the mounting screws into the wall leaving a gap of about 1/4-in.  
between the screw head and the wall. Then, go to step 4.  
4. Verify that no cables or wires are connected to the cable modem.  
5. Lift the cable modem into position. Slip the large end of both mounting slots  
(located in the back of the cable modem) over the mounting screws, then  
slide the cable modem down until the narrow end of the keyhole slot contacts  
the screw shaft.  
Important: Verify that the mounting screws securely support the cable  
modem before you release the unit.  
40  
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Telephone Service Frequently Asked Questions  
Telephone Service Frequently Asked Questions  
This section provides answers to frequently asked questions regarding cable modem telephone service. For  
issues regarding cable modem Internet service, see Troubleshooting My Internet Service Installation, earlier  
in this guide.  
Frequently Asked Questions  
Q. What if I don't subscribe to telephone service from my cable operator,  
can I still use the cable modem to make and receive phone calls?  
A. No. Telephone service is enabled for each telephone port on the cable  
modem by the cable telephony service provider. Contact your cable telephony  
service provider to get telephone service through the cable modem.  
Q. How do I arrange for installation?  
A. Professional installation from your cable service provider may be provided. A  
professional installer can connect the telephone service to your existing  
telephone wiring in your home or install new wiring if needed. Professional  
installation also ensures proper cable connection to the modem and to your PC,  
and ensures proper configuration of all hardware and software settings. Contact  
your cable telephony service provider for more information about installation.  
Q. Can I use my existing phone number with the cable modem?  
A. Telephone numbers are portable in some areas. Contact your telephone  
service provider for more information about using an existing telephone number.  
Q. Do I automatically receive high-speed Internet service with the cable  
modem?  
A. Your cable modem may be used to provide telephone service, high-speed  
Internet service, or both services. Your cable service provider enables Internet  
service. Contact your cable service provider for more information if you are not  
currently subscribing to Internet service.  
Q. How many telephones can I connect?  
A. The RJ-11 telephone-style connectors on the cable modem can each provide  
telephone service to multiple telephones, fax machines, and analog modems.  
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.  
Q. Can I surf the Internet and make telephone calls at the same time?  
A. Absolutely! Telephone service is provided separately from Internet data  
services. Internet surfing and other data services do not affect the quality of your  
telephone calls. If these services are enabled by your cable service provider, you  
can make telephone calls and surf the net at the same time.  
41  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Having Difficulty?  
Common Troubleshooting Suggestions  
The modem does not register a cable connection.  
The modem works with a standard, 75-ohm, RF coaxial cable. If you are using a  
different cable, your cable modem will not function properly. Contact your cable  
service provider to determine whether you are using the correct cable.  
There is no dial tone when I lift the telephone handset.  
•
Your telephone wiring may be connected to the wrong RJ-11 port on the  
cable modem. The cable modem has two telephone ports. Verify that you are  
connected to the correct telephone port.  
•
•
There may be a problem with your telephone set. Use a different telephone  
set and listen to hear dial tone.  
There may be a problem with your home telephone wiring. Use a telephone  
and connect directly to the same RJ-11 port on the back of the unit. If the dial  
tone is working here but does not work at other locations in the home, a  
professional may need to diagnose and repair a problem with your telephone  
wiring.  
•
•
Verify that the phone company has removed the previous telephone service  
from your home telephone wiring.  
Your telephone service may not be enabled from your cable telephony  
service provider. Contact your cable telephony service provider for more  
information.  
Frequently Asked Questions  
Q. What if I don’t subscribe to cable TV?  
A. If cable TV is available in your area, data service may be made available with  
or without subscribing to cable TV service. Contact your local cable service  
provider for complete information on cable services, including high-speed  
Internet access.  
Q. How do I arrange for installation?  
A. Call your cable telephony service provider to inquire about professional  
installation. A professional installation ensures proper cable connection to the  
modem and to your PC, and ensures proper configuration of all hardware and  
software settings. Contact your cable service provider for more information about  
installation.  
Q. How does the cable modem connect to my computer?  
A. The cable modem connects to the USB port or the 10/100BaseT Ethernet  
port on your PC. If your PC is not equipped with an Ethernet interface, an  
Ethernet card is available from your local PC or office supply retailer, or from  
your cable service provider.  
42  
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Having Difficulty?  
Q. After my cable modem is connected, how do I access the Internet?  
A. Your local cable service provider becomes your Internet Service Provider  
(ISP). They offer a wide range of services including e-mail, chat, news, and  
information services. Your cable service provider will provide the software you  
will need.  
Q. Can I watch TV and surf the Internet at the same time?  
A. Absolutely! If you subscribe to cable television service, you can watch TV and  
use your cable modem at the same time by connecting your TV and your cable  
modem to the cable network using an optional cable signal splitter.  
Q. Can I run more than one device on the modem?  
A. Yes—a single WebSTAR cable modem will theoretically support up to 253  
Ethernet devices utilizing user-supplied Ethernet hubs or routers that you can  
purchase at your local PC or office supply retailer. Another user at your location  
can simultaneously connect to the USB port on the cable modem. Contact your  
cable service provider for further assistance.  
Common Troubleshooting Issues  
I don’t understand the front panel status indicators.  
See Front Panel LED Status Indicator Functions, later in this guide, for more  
detailed information on the front panel status indicator operation and function.  
The modem does not register an Ethernet connection.  
•
Verify that your computer has a 10/100BaseT Ethernet card and that the  
Ethernet driver software is properly installed. If you purchase and install an  
Ethernet card, follow the installation instructions very carefully.  
•
Verify the status of the front panel status indicator lights.  
The modem does not register an Ethernet connection after connecting to a hub.  
If you are connecting multiple PCs to the cable modem, you should first connect  
the modem to the up-link port of the hub. The LINK LED of the hub will illuminate  
continuously.  
The modem does not register a cable connection.  
•
The modem works with a standard 75-ohm RF coaxial cable. If you are using  
a different cable, your cable modem will not function properly. Contact your  
cable service provider to determine whether you are using the correct cable.  
•
•
Verify that you have followed the procedures in Troubleshooting My  
Internet Service Installation, earlier in this guide.  
Your NIC card or USB interface may be malfunctioning. Refer to the  
troubleshooting information in the NIC or USB documentation.  
43  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Tips for Improved Performance  
Check and Correct  
If your cable modem does not perform as expected, the following tips may help. If  
you need further assistance, contact your cable service provider.  
•
Verify that the plug to your cable modem AC adapter is properly inserted into  
an electrical outlet.  
•
Verify that your cable modem AC adapter is not plugged into an electrical  
outlet that is controlled by a wall switch. If a wall switch controls the electrical  
outlet, make sure the switch is in the ON position.  
•
•
Verify that the POWER and CABLE LED status indicators on the front panel  
of your cable modem are illuminated.  
Verify that all cables are properly connected, and that you are using the  
correct cables.  
•
•
Verify that your cable service is active and that it supports two-way service.  
Verify that your TCP/IP is properly installed and configured if you are using  
the Ethernet connection.  
•
•
•
Verify that you have followed the procedures in How Do I Install the USB  
Drivers, earlier in this guide, if you are using the USB connection.  
Verify that you have called your cable service provider and given them the  
serial number and MAC address of your cable modem.  
If you are using a cable signal splitter so that you can connect the cable  
modem to other devices, remove the splitter and reconnect the cables so that  
the cable modem is connected directly to the cable input. If the cable modem  
now functions properly, the cable signal splitter may be defective and may  
need to be replaced.  
44  
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Front Panel LED Status Indicator Functions  
Front Panel LED Status Indicator Functions  
Initial Power Up, Calibration, and Registration  
The following chart illustrates the sequence of steps and the corresponding  
appearance of the cable modem front panel LED status indicators during power  
up, calibration, and registration on the network. Use this chart to troubleshoot the  
power up, calibration, and registration process of your cable modem.  
Note: After the cable modem completes Step 7 (Registration Completed), the  
modem proceeds immediately to Normal Operations. See Normal Operations,  
next in this section.  
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration  
Step →  
1
2
3
4
5
6
7
Front Panel  
Indicator  
Self  
Test  
Downstream Downstream  
Ranging  
Requesting  
IP Address  
Registering  
Registration  
Completed  
Scan  
Signal Lock  
Power  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
1
Receive  
OFF  
OFF  
OCCASIONAL OCCASIONAL OCCASIONAL OCCASIONAL  
BLINKING  
2
BLINKING  
BLINKING  
BLINKING  
Send  
ON  
ON  
OFF  
OCCASIONAL OCCASIONAL OCCASIONAL  
ON  
ON  
3
BLINKING  
OFF  
BLINKING  
BLINKING  
Cable  
SLOW  
BLINKING  
1 blink  
MOMENTARY  
ON  
BLINKING  
2 blinks  
BLINKING  
4 blinks  
4
PC*  
ON  
ON  
or  
ON  
or  
ON  
or  
ON  
or  
ON  
or  
ON  
5
BLINKING  
BLINKING  
BLINKING  
BLINKING  
BLINKING  
Line 1  
On  
On  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
6
Line 2  
7
Battery  
Low  
8
Battery  
Replace  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
9
* The PC LED is on whenever a PC is connected to the modem, and it blinks to indicate that data is being transferred. If the  
modem is used to provide telephone service only and is not connected to a PC, the PC LED is off.  
45  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Normal Operations  
The following chart illustrates the appearance of the cable modem front panel  
LED status indicators during normal operations.  
Step →  
8
Front Panel LED Status Indicators During Normal Operations  
Front Panel  
Indicator  
Normal Operations  
Power  
ON  
1
Receive  
BLINKS – To indicate data is being transferred between the modem and  
the network  
2
Send  
BLINKS – To indicate data is being transferred between the modem and  
the network  
3
Cable  
ON  
4
PC  
5
ON – When a single device is connected to either the Ethernet or USB  
port and no data is being sent to or from the modem  
BLINKS – When only one Ethernet or USB device is connected and data  
is being transferred between the consumer premise equipment (CPE) and  
the cable modem  
OFF- When no devices are connected to either the Ethernet or USB ports  
NOTE: With both Ethernet and USB devices connected to the modem at  
the same time, when data is being transferred through only one of the  
devices (Ethernet or USB), the indicator will illuminate continuously.  
Whenever data is being sent through both data ports (Ethernet and USB)  
simultaneously, the indicator will blink as described above.  
Line 1  
ON when line 1 is in use  
ON when line 2 is in use  
6
Line 2  
7
Battery Low  
•
•
OFF when battery is charged  
ON when battery charge is low  
8
Battery  
Replace  
•
•
OFF when battery is charged  
9
ON when battery must be replaced  
46  
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Front Panel LED Status Indicator Functions  
Special Conditions  
The following chart describes the appearance of the cable modem front panel  
LED status indicators during special conditions to show that you have been  
denied network access.  
Front Panel LED Status Indicators During Special  
Conditions  
Front Panel Indicator  
Network Access Denied  
Power  
SLOW BLINKING  
1 time per second  
1
Receive  
SLOW BLINKING  
1 time per second  
2
Send  
SLOW BLINKING  
1 time per second  
3
Cable  
SLOW BLINKING  
1 time per second  
4
PC  
SLOW BLINKING  
1 time per second  
5
Line 1  
OFF  
OFF  
6
Line 2  
7
Battery Low  
•
•
OFF when battery is charged  
ON when battery charge is low  
8
Battery Replace  
•
•
OFF when battery is charged  
9
ON when battery must be  
replaced  
47  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
Notices  
Trademarks  
Scientific-Atlanta and the Scientific-Atlanta logo are registered trademarks of  
Scientific-Atlanta, Inc.  
DPX2203C, EPX2203C, and WebSTAR are trademarks of Scientific-Atlanta, Inc.  
DOCSIS is a registered trademark of Cable Television Laboratories, Inc.  
PacketCable is a trademark of Cable Television Laboratories, Inc.  
Other trademarks listed herein are the property of their respective owners.  
Disclaimer  
Scientific-Atlanta, Inc. assumes no responsibility for errors or omissions that may  
appear in this guide. Scientific-Atlanta reserves the right to change this guide at  
any time without notice.  
Documentation Copyright Notice  
© 2005 Scientific-Atlanta, Inc. All rights reserved.  
Printed in the United States of America.  
Information in this document is subject to change without notice. No part of this  
document may be reproduced in any form without the express written permission  
of Scientific-Atlanta, Inc.  
Software Use Notice  
The software described in this document is copyrighted and furnished to you  
under a license agreement. You may only use or copy this software in  
accordance with the terms of your license agreement.  
Firmware Use Notice  
The firmware in this equipment is copyrighted. You may only use the firmware in  
the equipment in which it is provided. Any reproduction or distribution of this  
firmware, or any portion of it, without express written consent is prohibited.  
FCC Radiation Exposure Statement  
This equipment complies with FCC radiation exposure limits set forth for an  
uncontrolled environment. This equipment should be installed and operated with  
minimum distance of 20cm between the radiator and your body.  
48  
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FCC Compliance  
FCC Compliance  
United States FCC Compliance  
This equipment has been tested and found to comply with the applicable limits of  
Part 15 of FCC Rules. These limits are designed to provide reasonable  
protection against harmful interference in a residential installation. This  
equipment generates, uses, and can radiate radio frequency energy and, if not  
installed and used in accordance with the instructions, may cause harmful  
interference to radio or TV reception, which can be determined by turning the  
equipment off and on. The user is encouraged to try to correct the interference by  
one or more of the following measures:  
•
•
Increase the separation between the equipment and receiver  
Connect the equipment into an outlet on a circuit different from that to which  
the receiver is connected  
•
Consult your cable company or an experienced radio/TV technician for help  
Any changes or modifications not expressly approved by Scientific-Atlanta could  
void the user’s authority to operate the equipment.  
The information shown in the FCC Declaration of Conformity paragraph below is  
a requirement of the FCC and is intended to supply you with information  
regarding the FCC approval of this device. The phone numbers listed are for  
FCC-related questions only and not intended for questions regarding the  
connection or operation for this device. Please contact your cable service  
provider for any questions you may have regarding the operation or installation of  
this device.  
FCC Declaration of Conformity  
This device complies with Part 15 of FCC Rules. Operation is subject to the  
following two conditions: 1) the device may not cause harmful interference, and 2)  
the device must accept any interference received, including interference that may  
cause undesired operation.  
WebSTAR Cable Modems with  
Embedded MTA  
Model DPX2203C and Model EPX2203C  
Scientific-Atlanta, Inc.  
5030 Sugarloaf Parkway  
Lawrenceville, Georgia 30044 USA  
Telephone: 770-236-1077  
Canada EMI Regulation  
This Class B digital apparatus complies with Canadian ICES-003.  
Cet appareil numérique de la class B est conforme à la norme NMB-003 du  
Canada.  
49  
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WebSTAR DPX2203C and EPX2203C VoIP Cable Modem User’s Guide  
FCC Part 68  
The Federal Communications Commission (FCC) of the United States restricts  
specific uses of modems, and places registration responsibilities on both the  
manufacturer and the individual user.  
1.  
2.  
3.  
The modem may not be connected to a party line or to a coin-operated  
telephone.  
The modem manufacturer must make any repairs to the modem to  
maintain valid FCC registration.  
Notification to the telephone company is no longer required prior to  
connecting registered equipment, but upon request from the telephone  
company, the user shall tell the telephone company which line the  
equipment is connected to as well as the registration number and ringer  
equivalence number of the registered protective circuitry. FCC  
information is printed on a label on the bottom of the modem.  
IC (Industry Canada) Notice  
Notice: The Industry Canada (formerly Canadian Department of  
Communications) label identifies certified equipment. This certification means  
that the equipment meets certain telecommunications network protective,  
operational, and safety requirements. The department does not guarantee the  
equipment will operate to the user’s satisfaction.  
Before installing this equipment, users should ensure that it is permissible to be  
connected to the facilities of the local telecommunications company. The  
equipment must also be installed using an acceptable method of connection. In  
some cases, the company’s inside wiring associated with a single-line individual  
service may be extended by means of a certified connector assembly (telephone  
extension cord). The customer should be aware that compliance with the above  
conditions may not prevent degradation of service in some situations.  
Repairs to certified equipment should be made by an authorized Canadian  
maintenance facility designated by the supplier. Any repairs or alterations made  
by the user may give the telecommunications company cause to request the user  
to disconnect the equipment. Users should ensure for their own protection that  
the electrical ground connections of the power utility, telephone lines and internal  
metallic water pipe system, if present, are connected together. This precaution  
may be particularly important in rural areas.  
CAUTION:  
Users should not attempt to make such connections themselves, but  
should contact the appropriate electric inspection authority, or  
electrician, as appropriate.  
50  
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For Information  
If You Have Questions  
If you have technical questions, contact your local cable service provider.  
Scientific-Atlanta, Inc.  
770.236.5000  
5030 Sugarloaf Parkway, Box 565447  
Lawrenceville, GA 30042  
www.scientificatlanta.com  
Product and service availability subject to change without notice.  
© 2005 Scientific-Atlanta, Inc. All rights reserved.  
May 2005 Printed in United States of America  
Part Number 4004835 Rev A  
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