3) Make sure that the charge/in use LED and 
LED illuminate. If the LED does not illuminate, check to see that the AC adapter is plugged in and that the handset makes good contact with the cradle’s charging contacts.
Note:
• Connect the AC adapter to a continuous power supply (not controlled by a wall switch).
• Place each cradle close to the AC outlet to avoid long extension cords.
•Charge your handsets at least 15 - 20 hours before plugging into the phone line.
4) Once the handset battery packs are fully charged, connect the telephone line cord to the TEL LINE jack and a telephone outlet. If your telephone outlet isn't modular, contact your telephone company for assistance.
Modular
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