Information - Motorola MA560 Series Start Here Manual

The digits represented by ## in the product identifier indicate
the Ringer Equivalency Number (REN) for this equipment. The
REN is useful in determining the number of devices you may
connect to your telephone line and still have all of these
devices ring when your telephone number is called. In most
(but not all) areas, the sum of the RENs of all devices
connected to one line should not exceed 5. To be certain of the
number of devices you may connect to your line as determined
by the REN, contact your local telephone company.
Note: This equipment may not be used on coin service
provided by the telephone company.
Connection to party line service is subject to state tariffs.
Contact the state public utility commission, public service
commission or corporation commission for information.
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