GE 29875 Guide De L'utilisateur page 27

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REN Number
On the bottom of this equipment is a label indicating, among other information, the Ringer
Equivalence Number (REN) for the 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, you
should contact your local telephone company.
REN Number is located on the cabinet bottom.
Hearing Aid Compatibility (HAC)
This telephone system meets FCC/Industry Canada standards for Hearing Aid Compatibility.