CALLERSARENOTDISPLAYEDONTHESCREEN

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 the 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.

NO CALLER INFORMATION IS DISPLAYED WHEN HEARING THE CALLWAITINGAUDIO SOUND Verify that you have subscribed to the Call Waiting Caller ID service from your telephone company.

NETWORKSERVICECODESNOTFUNCTIONAL

Verify that you have subscribed to the appropriate Network Service Features from your telephone company.

MAINTENANCE INFORMATION

Treat your telephone equipment with care for trouble-free performance. Avoid dropping the handset. Carefully place the handset on-hook after use.

Avoid putting near heating appliances and devices that generate electrical noise (for example, motors and florescent lamps).

Clean your telephone equipment with a damp cloth. Stains may be removed with a mild soap. Do not use liquid or aerosol detergents or cleaning agents.

Do not expose to direct sunlight or moisture.

Retain the original package in case you need to ship it at a later date.

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Cortelco 3719 instruction manual Maintenance Information, Callersarenotdisplayedonthescreen