Motorola MA560 Series Start Here Manual page 22

The FCC requires this product to be serviced only by Motorola
or its authorized service agents.
CAUTION / WARNING: Changes or modifications not
expressly approved by Motorola could void not only the
user's authority to operate the equipment, but also the
limited warranty.
Hearing Aid Compatibility
This telephone system meets the FCC standards for hearing
aid compatibility.
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