Panasonic KX-TGM420 Operating Instructions Manual page 189

(5.0). To be certain of the number of devices that may
be connected to a line, as determined by the total
RENs, contact the local telephone company. For
products approved after July 23, 2001, the REN for the
product is part of the product identifier that has the
format US:AAAEQ##TXXXX. The digits represented by
## are the REN without a decimal point (e.g., 03 is a
REN of 0.3).
If this equipment causes harm to the telephone
network, the telephone company will notify you in
advance that temporary discontinuance of service may
be required. But if advance notice isn't practical, the
telephone company will notify the customer as soon as
possible. Also, you will be advised of your right to file a
complaint with the FCC if you believe it is necessary.
The telephone company may make changes in its
facilities, equipment, operations or procedures that
could affect the operation of the equipment. If this
happens the telephone company will provide advance
notice in order for you to make necessary
modifications to maintain uninterrupted service.
If trouble is experienced with this equipment, for repair
or warranty information, please contact a Factory
Service Center or other Authorized Servicer. If the
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