Radio Shack ET-2105 - Manual (Page 4)

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READ THIS BEFORE INSTALLATION
We have designed your phone to conform to federal regulations,
and you can connect it to most telephone lines. However, each
phone (and each device, such as a telephone or answering ma-
chine) that you connect to the telephone line draws power from
the telephone line. We refer to this power draw as the device's
ringer equivalence number, or REN. The REN is on the bottom of
your phone’s base.
If you use more than one phone or other device on the line, add
up all of the RENs. If the total is more than five (or three in rural ar-
eas), your telephones might not ring. If ringer operation is im-
paired, remove a device from the line.
Your phone complies with Part 68 of FCC Rules. You must, upon
request, provide the FCC registration number and the REN to
your telephone company. Both numbers are on the bottom of your
phone’s base.
Note: You must not connect your phone to:
• coin-operated systems
• party-line systems
• most electronic key telephone systems
This symbol is intended to inform you that impor-
tant operating and maintenance instructions are
included in the literature accompanying this prod-
uct.
!