Getting started
Battery installation
Before using the telephone, you should install four good AA alkaline batteries (not included) to provide memory backup and enable the use of some features. The four AA batteries are required for the following features to work: speakerphone, hold, mute, flash, caller ID, screen display, feature options menu, directory, clock, and the CALL INFO light.
If you unplug the telephone from the wall jack, or you lose telephone service for a few minutes, and good batteries are not installed, the following information is lost: call list, numbers stored in the directory, redial list, and all settings in the feature menu. We recommend that you initially install new batteries and change the batteries soon after the low battery icon 
appears.
CAUTION: Always unplug the telephone line cord before installing new batteries.
1. Press down on the battery compartment cover tabs as shown and pull to open the battery compartment cover.
2. Insert four AA alkaline batteries (not included) following the polarity markings in the battery compartment.
3. Close the battery compartment cover as shown, making sure the cover snaps into place.
NOTE: If there are no batteries installed and the telephone is plugged into a telephone wall jack, the screen display operates using the power from the telephone line when you lift the handset. When operating in this mode, the screen display may be dimmer than usual.