Cisco Systems DPC3208, EPC3208 What Types of Service Accounts Do I Need?, Telephone Device Types

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Installation Preparations

The maximum number of telephone devices connected to each RJ-11 port is limited by the total Ringing Load of the telephone devices that are connected. Many telephone devices are marked with a Ringer Equivalent Number (REN). Each telephone port on the cable modem can support up to a 5 REN load.

The sum of the REN load on all of the telephone devices attached to each port must not exceed 5 REN.

Telephone Device Types

You can use telephone devices that are not labeled with a REN number, but the maximum number of attached telephone devices cannot be accurately calculated. With telephone devices that are not labeled, each device should be connected and the ring signal should be tested before adding more devices. If too many telephone devices are attached and the ring signal can no longer be heard, telephone devices should be removed until the ring signal works properly.

Telephones, fax machines, and other telephone devices use the center 2 pins of the RJ-11 connectors to connect to your primary telephone service. The outer 2 pins of the connector may be provisioned to provide a second telephone line. Contact your service provider for more information.

Dialing Requirements

All your telephones should be set to use Dual-Tone Multi-Frequency (DTMF) dialing. Pulse dialing may not be supported by your local service provider.

Telephone Wiring Requirements

The cable modem supports connecting to the interior telephone wiring as well as connecting directly to a telephone or fax machine. The maximum distance from the unit to the most distant telephone device must not exceed 1000 feet (300 meters). Use 26-gauge twisted-pair, or larger, telephone wiring.

Important: Connection to an existing or a new permanently installed home telephone wiring network should be done by a qualified installer or at the direction of your telephone service provider.

What Types of Service Accounts Do I Need?

Depending upon the features your service provider offers, you may need to establish one or both of the following accounts:

A high-speed Internet access account, if your cable modem supports an Internet connection

An account for telephone service, if your cable modem supports digital telephone service

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Page Page Please Read Software and Firmware Use Trademark AcknowledgmentsPublication Disclaimer Copyright Page Aviso a los instaladores de sistemas Catv Mitteilung für CATV-TechnikerPage Contents Customer Information Ground the Product Power Source WarningProtect the Product from Lightning Verify the Power Source from the On/Off Power LightBattery Safety Battery DisposalTelephone Equipment Notice Protect the Product When Moving ItProvide Ventilation and Select a Location Viii Rev a Important Safety Instructions RF Exposure Statements United States FCC ComplianceDeclaration of Conformity Canada EMI RegulationAustralia CanadaPage Rev a Xiii CE Compliance CEModem/EMTA Page Xvii Audience About This GuideIntroduction PurposeThis Chapter ChapterConnections IntroductionHigh-Speed Data Digital VoiceSoftware and Documentation ManagementWhats In the Carton? Front Panel Description Introducing the Docsis Cable Modem Back Panel Description Page Installing the Docsis Cable Modem What Are the Requirements for Telephone Service? Installation PreparationsWhat Are the System Requirements for Internet Service? Dialing Requirements What Types of Service Accounts Do I Need?Telephone Wiring Requirements Telephone Device TypesHigh-Speed Internet Access Account Telephone Service Where Is the Best Location for My Cable Modem?Install the Battery Optional Close the battery compartment door Installing the BatteryPosition the Cable Modem How Do I Mount the Cable Modem on a Wall? OptionalSelect an Appropriate Place to Mount the Cable Modem Equipment NeededLocation and Dimensions of the Wall-Mounting Slots Mounting the Cable Modem on a Wall Connect the Cable Modem Install the Cable ModemConnect Devices to the Cable Modem Install the Cable Modem Installing the Docsis Cable Modem Operation of Front Panel Indicators Operation of Front Panel Indicators Rev a Front Panel LED Status Indicators During Normal Conditions Normal Operations AC Power AppliedSpecial Conditions Page Maintaining the Battery Location of the Battery Removing and Replacing the Battery Battery MaintenanceCharging the Battery Using the Cable Modem Without a Battery Troubleshooting the Docsis Cable Modem How Do I Configure TCP/IP Protocol? Frequently Asked QuestionsConfiguring TCP/IP on Macintosh Systems How Do I Renew the IP Address on My PC? Can I Watch TV and Surf the Internet at the Same Time? How Do I Arrange for Installation?What if I Dont Subscribe to Cable TV? How Does the Cable Modem Connect to My Computer?How Many Telephones Can I Connect? Can I Use my Existing Phone Number with the Cable Modem?Cable Modem does not register an Ethernet connection Common Troubleshooting IssuesDont understand the front panel status indicators There is no dial tone when I lift the handsetTroubleshooting the Docsis Cable Modem Tips for Improved Performance Page Customer Information If You Have Questions Customer SupportAustralia Page Index Index