Radio Shack ET-598 - Manual (Page 4)

4
READ THIS BEFORE
INSTALLATION
Each device that you connect to the
phone line draws power from the
phone line. We refer to this power draw
as the device’s
ringer equivalence
number, or REN. The REN for your
ET-598 is located on the bottom of the
base.
If you are using more than one phone
or other device on the line, add up all
the RENs. If the total is more than five,
your phones might not ring. In rural ar-
eas, a total REN of three might impair
ringer operation. If ringer operation is
impaired, remove a device from the
line.
FCC STATEMENT
This telephone complies with Part 68
of
FCC Rules. Upon request, you must
provide the FCC Registration Number
and the REN to your phone company.
These numbers are located on the bot-
tom of the base.
Note: You must not connect your
phone to any of the following:
• coin-operated systems
• party-line systems
• most electronic key phone sys-
tems
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