Overloading

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 operating instructions for those products. 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.
Preventing Power Cord Damage
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. Arrange all power cords so that pets cannot walk on or disturb the cords. Do not place objects on or lean objects against the cords, which can damage the cords.
Handling Replaceable Battery Pack
This product contains 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 battery. Do not disassemble it or attempt to recharge it outside the system. Do not crush, puncture, dispose of in fire, short the external contacts, or expose to water or other liquids. Dispose of the battery in accordance with local regulations and instructions from your service provider.

Usage Warnings

Providing Ventilation
Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. Do not place this apparatus on a bed, sofa, rug, or similar surface. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not install this apparatus in an enclosure, such as a bookcase or rack, unless the installation provides proper ventilation. 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 use this apparatus near water.
Selecting a Proper Location
WARNING: Avoid personal injury and damage to this product! An unstable surface may cause this product to fall. Place this product on a stable surface. The surface must support the size and weight of this product. Any mounting accessory used must be recommended by the manufacturer. The product should be mounted to a wall or ceiling only as recommended by the manufacturer. Important! The power cord is the mains power supply disconnect device. 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.

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, unplug this apparatus during lightning storms or when unused for long periods of time. In addition to disconnecting the AC power from the wall outlet, disconnect the signal inputs. This may prevent damage to the apparatus due to lightning and power-line surges. Plugging this apparatus into a surge protector may reduce the risk of damage.

20060712MDBR

FCC Compliance
United States FCC Compliance
This device has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against such interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television 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: Reorient or relocate the receiving antenna. 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 the cable company or an experienced radio/television technician for help. Any changes or modifications not expressly approved by Scientific-Atlanta, Inc., 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.
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. DPC2203 or EPC2203 Cable Modem with Embedded MTA DPC2203/EPC2203 Manufactured by: 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 numrique de la class B est conforme la norme NMB-003 du Canada.

20060628FDC

Introduction
Welcome to the exciting world of high-speed Internet and high-quality digital telephone service. Your new DPC2203 or EPC2203 Voice-over-Internet Protocol (VoIP) Cable Modem is a modem that meets industry standards for high-speed data connectivity along with reliable digital telephone service. With cable modem, your Internet enjoyment, home and business communications, and personal productivity will surely soar. This guide provides procedures and recommendations for placing, installing, configuring, operating, and troubleshooting your DPC2203 or EPC2203 cable modem for high-speed Internet or digital telephone service for your home or office. Refer to the appropriate section in this guide for the specific information you need for your situation. Contact your service provider for more information about subscribing to these services.

Benefits and Features

Your new cable modem offers the following outstanding benefits and features: Includes an embedded media terminal adapter (EMTA) supporting two-line voice services Provides a high-speed broadband Internet connection that energizes your online experience, which makes downloading and sharing files and photos with your family and friends hassle free Includes 10/100BaseT Ethernet and USB ports to provide connectivity for highspeed data services or to other Internet devices Assures a broad range of interoperability with most service providers by complying with Data Over Cable System Interface Specifications (DOCSIS) 1.0, 1.1, and 2.0 standards along with PacketCable 1.0 specifications to deliver high-end performance and reliability Includes two RJ-11 telephony ports for connecting conventional telephones or fax machines Allows you to attach multiple devices in your home or office to the cable modem for high-speed networking and sharing of files and folders without first copying them onto a CD or diskette Features Plug and Play operation for easy set up and installation Provides parental control and advanced firewall technology
Uses an attractive compact design that allows for vertical, horizontal, or wallmount placement Allows automatic software upgrades by your service provider Includes one or two optional internal Lithium-Ion cartridge-style batteries for convenient and long-lasting backup power

What's In the Carton?

When you receive your 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 DPC2203 or EPC2203 VoIP Cable Modem

Optional battery model

One AC power adapter with power cord
One Ethernet cable (CAT5/RJ-45)

One USB cable

One CD-ROM containing the user's guide and the USB drivers

One or two Lithium Ion cartridge batteries (not provided with all models) If any of these items are missing or damaged, please contact your service provider for assistance.
Notes: You need a 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 wireless home gateway. 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.

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 (on page 53) for more information on front-panel LED status indicator functions.

Standard model

Battery backup model
POWER Illuminates solid green to indicate that AC power is being applied to the cable modem. AC power must be available to recharge the optional battery. DS (Downstream) Indicates the status of the connection for receiving data. Illuminates during normal operation US (Upstream) Indicates the status of the connection for sending data. Illuminates during normal operation ONLINE 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
LINK 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 TEL 1 Illuminates solid green when telephony service is enabled. Blinks when line 1 is in use TEL 2 Illuminates solid green when telephony service is enabled. Blinks when line 2 is in use BATTERY (optional models only) Illuminates solid green to indicate that the battery is charged. Blinks to indicate that the battery charge is low. Off when operating from battery power or when the battery charge is depleted or the battery is defective
Notes: After the cable modem is successfully registered on the network, the POWER (LED 1), DS (LED 2), US (LED 3), and ONLINE (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-optional model only). Most LEDs are disabled if the unit is operating on battery power. In this mode, the POWER LED blinks to indicate that the unit is operating under battery power but AC power has failed

Back Panel Description

The following illustration shows the description and function of the back panel components on the DPC2203 and EPC2203.
Important! Do not connect your PC to both the Ethernet and USB ports at the same time. Your modem will not function properly if both the Ethernet and USB ports are connected to your PC at the same time. 1 POWER Connects the cable modem to the AC power supply that is provided with your cable modem
CAUTION: Avoid damage to your equipment. Only use the AC power adapter that is provided with your cable modem.
TEL 1/TEL 2 RJ-11 telephone ports connect to home telephone wiring to conventional telephones or fax machines ETHERNET RJ-45 Ethernet port connects to the 10/100baseT Ethernet port on your PC or your home network USB 12 Mbps USB 1.1 port connects to the USB port on your PC
REBOOT EMTA Pressing this switch reboots the EMTA. Pressing this switch for more than three seconds resets the device to factory default values and reboots the EMTA
CAUTION: The Reboot EMTA 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 cable modem settings you have selected.
CABLE F-Connector connects to an active signal from your 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'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 CD-ROM drive
Minimum System Requirements for Macintosh

MAC OS 7.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
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 or your Apple Macintosh computer
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 service provider. Choose one of the two options in this section.
I Do Not Have a High-Speed Internet Access Account
If you do not have a high-speed Internet access account, your service provider will set up your account and become your Internet Service Provider (ISP). Internet access enables you to send and receive e-mail, access the World Wide Web, and receive other Internet services. You will need to give your service provider the following information: The serial number of the modem The Media Access Control (MAC) address of the modem 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.
Write down these numbers in the space provided here. Serial Number _______________________ MAC Address ________________________
I Already Have an Existing High-Speed Internet Access Account
If you have an existing high-speed Internet access account, you must give your service provider the serial number and the MAC address of the cable modem. Refer to the serial number and MAC address information listed previously in this section. Note: You may not be able to continue to use your existing e-mail account with your cable modem. Contact your service provider for more information.

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 to access the Internet. Professional installation may be available. Contact your local service provider for further assistance. To connect devices The following diagram illustrates one of the various networking options that are available to you.
Connecting the Modem for High-Speed Data Service
WARNING: To avoid personal injury or damage to your equipment, follow these steps in the exact order shown.
Power off your PC and unplug it from the power source. 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. 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 cord into the POWER connector on the back of the cable modem, and then plug the cord 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 ONLINE LED status indicator on the front panel stops blinking and illuminates continuously. 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? (on page 21). 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? (on page 24).
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.

Installing USB Drivers on Windows 2000 Systems 1 Insert the USB Cable Modem Driver Installation Disk into the CD-ROM drive of your PC. Wait until the POWER and ONLINE LED status indicators on the front panel of the cable modem illuminate solid green. 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. 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. Click Yes to continue the installation. The Found New Hardware Wizard window reopens with a message that the installation is complete. 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.
10 Try to access the Internet. If you cannot access the Internet, go to Having Difficulty? (on page 44). If you still cannot access the Internet, contact your service provider for further assistance. Installing USB Drivers on Windows XP Systems 1 Insert the USB Cable Modem Driver Installation Disk into the CD-ROM drive of your PC. Wait until the POWER and ONLINE 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. 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? (on page 44). If you still cannot access the Internet, contact your service provider for further assistance.
What Are the Requirements for Ethernet Network Devices?
How Many Ethernet Network Devices Can I Connect?

Read the warnings and caution on this page. Then, follow the installation procedures later in this guide to ensure proper cable modem operation when connecting Ethernet network devices.
Select locations for Ethernet network devices. For more information, see How Do I Select and Place Ethernet Network Devices? (on page 27). 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. 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 settop converter, or a VCR. After all connections are complete, insert the AC power cord into the POWER connector on the back of the cable modem, and then plug the cord into an AC power source. 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 ONLINE LED status indicator on the front panel stops blinking and illuminates continuously. 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.
What Are the Requirements for USB Network Devices?
How Many USB Devices Can I Connect?
You can connect one PC or other USB device to the USB port on the EMTA.
What Are the Wiring Requirements?
Scientific Atlanta recommends that you use the USB 1.1 cable provided with your modem.
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? (on page 24), for information on installing USB drivers.
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 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? (on page 32).

Note: Professional installation may be available. Contact your service provider for further assistance.

Installation Diagram

The following diagram illustrates one of the various connection options that are available to you.
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 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 cord into the power connector on the back of the cable modem, and then plug the cord into an AC power source. 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 ONLINE LED status indicator 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. 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. This process may take several minutes. Notes: The TEL 1 and TEL 2 LED status indicators on the front panel of the cable modem illuminate when telephony service is enabled. The TEL 1 or the TEL 2 LED status indicators on the front panel of the cable modem blink when the attached device is off the hook.
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 How Do I Troubleshoot My Internet Service Installation? (on page 34)
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 telephony 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.

How Do I Maintain the Battery (Optional Model Only)
Your modem includes up to two rechargeable Lithium-Ion batteries to provide stand-by operation in the event of an AC power failure. You can replace one or both of the batteries without the use of any tools.
WARNING: There is danger of explosion if the battery is mishandled or incorrectly replaced. Replace only with the same type of battery. Do not disassemble it or 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.

Charging the Batteries

The batteries begin to charge automatically as soon as you attach the modem to the AC electrical outlet. When you first plug in the modem, the POWER LED status indicator illuminates. Important! It may take as long as 24 hours for each battery to charge fully.
Using the Modem Without a Battery
If you want, you can use the modem without a battery. If you need to remove the batteries, follow the procedures found in Removing and Replacing the Batteries. Important! If you choose to operate your modem without a battery, you risk losing your telephone service during a power outage.

Replacing the Batteries

Under normal circumstances, the battery should last for several years. The BATTERY LED status indicator turns off to indicate that the battery should be replaced soon. Contact your service provider to obtain replacement batteries and for disposal instructions. Note: Follow the steps found in Location of Batteries (Single Battery Model) (on page 48) or Location of Batteries (Double Battery Model) (on page 49) to remove and replace one or both of the batteries.
Location of Batteries (Single Battery Model)
The following illustration shows the location of the batteries on the DPC2203/EPC2203 or DPC2100 with one battery.
Removing and Replacing the Battery You can remove and replace the battery without disconnecting the AC power source. 3 Carefully turn the modem over. Gently release the latch to open the battery cover and gain access to the battery compartment. Grasp the plastic strip on the front of the battery and gently slide the battery forward to remove it from the battery compartment. Important! It can take as long as 24 hours for the battery to charge fully. Insert a new battery into the battery compartment. Close the battery compartment door. The battery lock will automatically reengage. Note: Dispose of the battery in accordance with local regulations and instructions from your service provider.

Location of Batteries (Double Battery Model)
The following illustration shows the location of the batteries on the DPC2203/EPC2203 with two batteries.
Removing and Replacing the Batteries You can remove and replace the batteries without disconnecting the AC power source. 3 Gently press the battery cover on the front of the modem to open the battery cover and gain access to the battery compartment. Slide the battery lock upward (toward the front panel LEDs) to disengage the battery lock. Grasp the plastic strip on the front of the battery and gently slide the battery forward to remove it from the battery compartment. Note: Dispose of the battery in accordance with local regulations and instructions from your service provider. 6 Insert a new battery into the battery compartment. Repeat steps 3 and 4 if you are replacing both batteries. Close the battery compartment door. The battery lock will automatically engage. Important! It may take as long as 24 hours for each battery to charge fully.
How Do I Mount the 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 be mounted vertically or 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 illustrations shown on the following pages
Mount the modem as shown in the following illustration.
Location and Dimensions of the Wall-Mounting Slots