Cortelco 3719 instruction manual Messageerror, Nodatasent

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If a local call, and its 7-digit number is displayed:

Pressing 7-10-11 once will change it to a 10 digit format.

Pressing 7-10-11 twice will change it to an 11 digit number.

Pressing 7-10-11 three times will go back to the original 7 digit telephone number.

The LCD can only display 10 digit telephone numbers, when you change the format to 11 digits, only the first 10 digits can be seen, but it will dial 11 digits after you press DIAL.

If a long distance call, and its 10 digit number is displayed:

Pressing 7-10-11 once will change it to an 11 digit number.

Pressing 7-10-11 twice will remove the 3 digit area code and change to display only the 7 digit number.

Pressing 7-10-11 three times will go back to the original 10 digit telephone number.

When the desired format of the telephone number is reached, press DIAL to dial the displayed number.

In idle mode, the 7-10-11 button can be used to adjust the LCD contrast. There are 4 different contrast levels.

MESSAGEERROR

The display indicates [-MESSAGE ERROR-]” if your unit receives a call that has an error in the transmission or reception.

NODATASENT

[-NO DATA SENT-] will be displayed if there is no caller ID (CID) number sent from the telephone company while ringing.

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Contents OWNER’S Page Table of Contents Usingthedirectory Usingthecalleridfunction Importantsafetyinstructions Page Introduction 3719FEATURESCheckthecontents InstallingyourtelephoneChoosealocationforthetelephone PlugintheadapterWallmountinstallation Installthetelephonelinecord DesktopinstallationREMOVINGTHEDESKTOP/WALLMOUNTWEDGE Setup FactorypresetsEnter 2ND Code Enter 3RD Code Enter 4TH Code VM Access NUM Telephonefeatures Receivingaphonecall Usingyour TelephonePlacingaphonecall SpeakerphonebuttonVolumeswitch VolumebuttonDurationcounter REDIAL/PAUSEBUTTONFlashbutton HoldbuttonCallwaitingdisplay RingervolumeMutebutton Dataport Headsetcompatible10-11BUTTON/CONTRAST VoicemailbuttonReviewbuttons NetworkservicesDirectorybutton MemorybuttonToStoreANewNumberAndNameIntoTheDirectory Using the DirectoryDialingTelephoneNumbersInTheDirectory Messagelight Using the Caller IdfunctionMessagewaiting Reviewingcalls ReceivingcallsCallbackdial DeletingcallsNodatasent MessageerrorUnknowncalls PrivatecallsUsing the Network Service Function To select the alternate Network Serv. Codes Phonedoesnotring Telephone Service ProblemsCallersarenotdisplayedonthescreen Maintenance InformationRepair Ofyour Telephone FCC Wants YOU to Know Limited Warranty