Getting started
Introduction
This AT&T CL4939 big button big display telephone has a large tilt display for easy viewing and extra large buttons for easy viewing and dialing.
You must use the supplied power adapter to use most features of this telephone. In the event of power failure, this telephone works only to make or answer calls with the handset. Refer to Line power mode (no AC power) on page 26 for more details.
This telephone is
This telephone also features 10
This telephone supports caller ID with call waiting service. (Caller ID services are subscriber services available from your telephone service providers and fees may apply.)
This telephone also features a
This user’s manual contains detailed instructions for using your AT&T CL4939 big button big display telephone. Please read this user’s manual before using this CL4939 telephone.