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

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.

MESSAGE WAITING LIGHT DOES NOT WORK

Verify that the Message Waiting Switch (see Page 6) is set

to the correct position for the MW signalling being delivered.

CANNOT MAKE CALLS ON HEADSET

Verify that the headset is firmly plugged into the headset jack on the base of the unit.

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 8782 instruction manual Telephone Service Problems, Troubleshooting