Cortelco 8780 instruction manual Telephone Service Problems, Troubleshooting

Models: 8780

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TELEPHONE PART IDENTIFICATION

1.Liquid Crystal Display (Multi-Angle LCD) - Displays the phone number, date and time and other information.

2.One-Touch Memories - Phone numbers can be stored for speed dialing.

3.Del/Set - Press and Hold for 3 seconds to bring up menu. Press to enter and confirm settings. Press to delete or edit the telephone number when reviewing caller IDs.

4.Call Back - When reviewing Caller ID records, press to dial the saved number.

5. - Press to enter the phone book.

6.VIP - Press to enter, set or remove VIP numbers.

7.Store - Press to store the one-touch speed dial memories.

8.AUTO RD (Auto Redial/Change Ring Tone)

a.Press to auto redial the last dialed number continuously until the phone is answered.

b.Press and hold for 3 seconds to change ring tone.

9.Redial/Pause - Press to redial and review the last dialed numbers.

10.Hold - Press to place the line on hold.

TELEPHONE SERVICE PROBLEMS

If you have any problems with your telephone equipment service, determine if the problem is with your unit or the telephone company lines. BEFORE CALLING THE TELEPHONE COMPANY. Be aware that they may charge you for a service call if the problem is caused by your telephone equipment.

TROUBLESHOOTING

PHONE DOES NOT RING

Line cord is disconnected at telephone outlet or at telephone end.

Phone is OFF HOOK. Make certain the hookswitch is depressed when the handset is in the cradle.

SPEAKERPHONE is on. Turn off speakerphone.

NO DIAL TONE

Wire is disconnected at telephone jack or at wall jack. Test the telephone in a different wall jack. If it works, the first jack may

be defective.

HAVE DIAL TONE BUT CANNOT DIAL OUT

Incorrect dialing mode. Switch to DTMF or PULSE mode as

needed.

BLANK SCREEN

Since this unit is line powered, the screen is blank while not on a call.

CALLERS ARE NOT DISPLAYED ON THE SCREEN

Verify that you have subscribed to the appropriate service (Caller ID and Call Waiting Caller ID) from your telephone company. If you only subscribed to Caller ID service this unit will not display the call waiting caller ID information.

Check if your answering machine is set to answer the call before 2 rings.

Always disconnect all the telephone cords, and then reinstall the unit step by step per this instruction manual before asking for service.

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Cortelco 8780 instruction manual Telephone Service Problems, Troubleshooting