Radio Shack TAD-716 - Manual (Page 5)

5
READ THIS FIRST
We have designed the TAD-716 to conform to federal
regulations, and you can connect it to most telephone
lines. However, each device 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 is on the bottom of the TAD-716.
If you are using more than one device on the line, add up
all the RENs. If the total is more than five (three in rural
areas), your phones might not ring and the TAD-716
might not answer. If ringer operation is impaired, remove
a device from the telephone line.
FCC STATEMENT
The TAD-716 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
on the bottom of the TAD-716.
Note: You must not connect the TAD-716 to:
• coin-operated systems
• party-line systems
• most electronic key phone systems