Cortelco 2420 LCD Contrast, Time/Date, Call Wait ID ON/OFF, Message Waiting, Battery Compartment

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LCD CONTRAST

1.Press MENU until -3-and LCD CONTRASTappears. -3-flashes.

2.Use the dial pad to key in the value or press to increase the setting, to decrease the setting. The phone has five (1–5) display contrast settings.

3.Press OK or MENU to complete the setting and go to next setting, or press DELETE to complete the setting and return to standby mode.

4.The default LCD CONTRAST setting is 3.

TIME/DATE

NOTE: It is not necessary to set the time and date if you have Caller ID service.

1.Repeatedly press MENU button until “SET TIME/DATE“ appears and the hour flashes.

2.Press to increase the setting, to decrease the setting. Or use the keypad buttons to set the time and date

manually. Press or to choose AM, PM.

3.Press OK to move between the different settings. The default time/date setting is 12:00 am 01/01(hh:mm mm/dd). The local clock will also be updated automatically when a caller ID is received.

4.Press MENU to complete the setting and go to next setting, or press DELETE to fail the setting and return to standby mode.

CALL WAIT ID ON/OFF

1.Repeatedly press MENU until “CALL WAIT ID ON“ appears.

2.Press or to choose CALL WAIT ID ON/OFF. The default CALL WAIT ID setting is OFF.

3.Press OK or MENU to complete the setting, or press DELETE to complete the setting and return to standby mode.

MESSAGE WAITING

If you subscribe to your phone company's message waiting service, your phone will inform you when you have a message. When you receive a message, the display will show MSG WAITING ON and ￿ and the new call LED will flash. MSG WAITING ON disappears from the display after 8 seconds, but ￿ is displayed and the new call LED will flash until you retrieve the message.

NOTE:

The phone is compatible with both FSK and Stutter Dial Tone message waiting. There is a switch on the base of the phone to disable the Stutter Dial Tone message waiting.

BATTERY COMPARTMENT

Your phone has a battery compartment which will hold 4 AA batteries. These batteries are not necessary for normal operation. If the batteries are installed, the Caller ID and the handset amplifier will continue to work during a power failure.

RESETTING THE PHONE

If your phone stops working properly, use a straightened paper clip to press RESET on the back of the phone.

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Contents Big Button Caller ID Speaker Phone Contents Caller ID/Memory Manual Important Safety InstructionsTelephone Operation Read this Before Installation Installing Your PhoneMaking and Receiving Calls SpeakphoneConnecting AN Optional Headset Call TimerUsing Flash Using Tone Services on a Pulse LineMemory Operation Amplification FeaturesReview a Number from the Memory PauseDialing a Number from the Memory Using Caller ID Using the ONE-TOUCH Speed Dial MemorySetting the Long Distance Code Changing a Speed Dial NumberPhone Record Setting the Area CodeCaller ID on Call Waiting Caller ID SummaryDeleting ALL Calls Deleting a Call from the Call HistoryTransfering a Caller ID Number to Speed Dial Memory Speed Dialing from the Caller ID List Different Area CodeAdvanced User Options Menu Resetting the Phone Battery CompartmentLCD Contrast TIME/DATEFCC Information Industry Canada Information Limited Warranty