Cortelco 2720 Manuel d'instructions télécharger pdf (Page 16)

Troubleshooting Guide

Phone Does Not Ring

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

2. Phone is OFF HOOK. Make certain the hook switch is depressed when the

handset is in the cradle.

3. SPEAKERPHONE indicator is on. Turn off speakerphone.

No Dial Tone

Wire is disconnected at telephone or at wall jack. Test the telephone in a

different wall jack. If it works, the rst jack may be defective.

Redial Button Does Not Function

The telephone may be momentarily disconnected from the telephone jack.

Blank Screen

1. Check if the adapter is connected properly.

2. Press the contrast button to see if contrast level is set correctly.

Callers Are Not Displayed on the Screen

1. Verify that you have subscribed to the appropriate service (Caller ID and Call

Waiting Caller ID) from your phone company. If you only subscribed to Caller

ID service, the unit will not display Call Waiting Caller ID information.

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

No Caller Information Is Displayed When Hearing the Call Waiting Beep

Verify that you have subscribed to Call Waiting Caller ID service from your

telephone company.

Message Error Happens Frequently

Caller information was not transmitted properly. Check with your telephone

company to see if there is a problem with your phone line. Since our special

design will retain your stored call records even with the power adapter

disconnected, we encourage you to disconnect all the telephone cords and

adapter; then reinstall the unit step by step per the instruction manual before

you ask for service.

Reporting Trouble

For help, please call Cox Business Customer Care at 623-322-2000.

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Cortelco 2720 Manuel d'instructions Page 16