Radio Shack AFX-300 - Manual (Page 4)

4
READ THIS BEFORE INSTALLING
Each device that you connect to the phone line draws power
from the phone line. We refer to this power draw as the de-
vice’s ringer equivalence number, or REN. The REN is shown
on the bottom of your AFX-300.
If you are using more than one device on the line, add up all
the RENs. If the total is more than five, your phone might not
ring and your answering machine might not answer. In rural
areas, a total REN of three might impair ringer operation. If
ringer operation is impaired, remove a device from the line.
Your AFX-300 complies with Part 68 of FCC Rules . You must,
upon request, provide the FCC registration number and the
REN to your phone company. Both numbers are shown on the
bottom of your AFX-300.
You must not connect your AFX-300 to:
• Coin-operated systems
• Party-line systems
• Most electronic key phone systems
The AFX-300 is not compatible with:
• Voice mail services
• Call forwarding services
• Call waiting services
• Fax machines or modems that have a REN greater than
2.0B.
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