Your Display Telephone

555-1234.Use any button labeled with a phone number to make or receive outside calls only. This is called a personal line because it appears only on your phone or a particular group of phones.

WATS. Use buttons labeled with special service names like WATS to make and receive outside calls at a reduced cost.

Line Buttons 1-23

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AT&T MLX-10D, MLX20L, MLX-28D manual Your Display Telephone