AT&T 983 - Manual (Page 7)

4
Getting started
Choose a central location close to a telephone jack. The telephone base can be
placed on a flat surface or mounted on a standard wall plate.
Avoid placing the telephone base too close to:
• Excessive heat sources.
• Excessive dust sources such as a workshop or garage.
• Excessive moisture.
• Extremely low temperature.
• Mechanical vibration or shock such as on top of the washing machine or
work bench.
Before you install
To use this product as a two-line telephone, you must have a two-line modular
wall jack or two separate one-line modular wall jacks. To use both lines of a
two-line telephone, your local telephone company must provide two telephone
numbers.
This product is designed to operate optimally with two telephone lines. If
you choose to install only one telephone line, the telephone will continue to
operate normally as long as the unused line is not selected. For example, if you
press
LINE 2 when there is only one line installed and that line is connected to
the L1 or L1/L2 jack, the telephone does not function properly. Simply press
LINE 1 and begin again.