AT&T ATCL2940, 210WH, 210 BLK user manual Display screen is blank, Operation during a power failure

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Appendix

Troubleshooting

Display screen is blank.

•Make sure you have properly installed four working alkaline batteries (See Battery installation on pages 4-5).

Operation during a power failure.

•This telephone operates during a power failure if a telephone line cord is plugged between the telephone wall jack and the telephone base. You are able to answer calls with the handset, and make calls using the dialing keys. No other features work unless batteries are installed. All settings in menu options are retained during a power failure if a telephone line cord is plugged between the telephone wall jack and the telephone base.

•If you neither install batteries nor a telephone line, after a few minutes, the telephone clears the directory, caller ID history, speed dial memory, and the last number dialed memory. At the same time, all settings in menu options change back to their default settings.

My caller ID features are not working properly.

•Caller ID is a subscription service. You must subscribe to this service from your telephone service provider for this feature to work on your telephone.

•The caller may not be calling from an area that supports caller ID.

•Both your and the caller’s telephone service providers must use equipment compatible with caller ID service.

•If you subscribe to high-speed Internet service (DSL - digital subscriber line) through your telephone line, you must install a DSL filter between the telephone line cord and the telephone wall jack (see Telephone installation on page 6). The filter prevents noise and caller ID problems caused by DSL interference. Please contact your DSL service provider for more information about DSL filters.

•Make sure the area codes are set correctly (see Home area code on page 13 and Local area code on page 14).

•Reset the telephone. See Common cure for electronic equipment on page 41.

The telephone does not receive caller ID or the telephone does not display caller ID during call waiting.

•Make sure you subscribe to caller ID with call waiting features provided by the telephone service provider.

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Contents User’s manual Congratulations Parts checklist Table of contents Index MENU/SELECT Quick reference guideVolume Stop InstallationBattery installation Battery installation Telephone installation Tabletop to wall mount installation Installation optionsInstallation options Wall mount to tabletop installation Installation options Set date and time Telephone settingsContrast Dial modeHome area code LanguageLocal Area Code Local area codeMaking a call Telephone operationOn hook dialing predialing Answering a callLast number redial Ringer volumeTo dial the last dialed number To delete the last dialed numberOptions while on call To access the speed dial memory while on a call To access the directory while on a callTo access the caller ID history while on a call Chain dialingTo turn the Audio Assist feature off To turn the Audio Assist feature onOptions while on calls Audio AssistCharacter chart DirectoryDirectory memory capacity Store a directory entry Create directory entriesReview the directory Review directory entriesSearch by name Dial a directory number Dial or edit directory entriesDirectory entries on Edit a directory entryDelete a directory entry Delete directory entriesSpeed dial memory overview Speed dialStore a speed dial entry Dial #1To dial a speed dial number To review a speed dial numberShow the desired speed dial entry Information about caller ID with call waiting About caller IDMissed new call indicator Caller ID historyHow the caller ID history caller ID log works Memory match Caller ID operationView dialing options Review the caller ID historyDial a caller ID log entry Delete call ID log entries To delete an entryTo delete all entries Save to DIR Save a caller ID log entry to the directoryAssign Spdial # Stored Save a caller ID log entry to a speed dial memory locationOn-screen message Reason Reasons for missing caller ID informationScreen icons Screen messages and icons USE/NO Line Screen display messagesMy telephone does not work at all TroubleshootingThere is no dial tone Cannot dial outTelephone does not ring when there is an incoming call Hear other calls when using the telephoneAppears on the screen Operation during a power failure My caller ID features are not working properlyDisplay screen is blank Common cure for electronic equipment General product care Safety information Important safety informationProduct identifier and REN information FCC and Acta informationPart 15 of FCC rules Programming/testing of emergency numbersWhat does this limited warranty cover? Limited warrantyHow do you get warranty service? Technical specifications Index