User's Manual

37
TECHNICAL INFORMATION
REN Number:
The Ringer Equivalence Number
(REN) assigned to each terminal’s
device provides an indication of the
maximum number of terminals
allowed to be connected to a
telephone interface.
The REN number of this phone is lo-
cated on the bottom of the base unit.
The termination on an interface may
consist of any combination of device
subject only to the requirement that
the sum of the Ringer Equivalence
Numbers of all the devices does not
exceed 5.
CAUTION
This product is intended for use in the
USA and CANADA only. Sale or use
in other countries may violate local
laws.
Cordless telephones use radio
frequencies to allow mobility. This af-
fects the performance of your phone.
1. NOISE
Electrical pulse noise is present in
most homes at one time or another.
This is most intense during electri-
cal storms. Certain kinds of electrical
equipment, such as light dimmers,
uorescent bulbs, motors, fans, etc.,
also generate pulse noise.
Because radio frequencies are sus-
ceptible to this, you may on occasion
hear pulse noise through the handset.
This is usually only a minor annoy-
ance and should not be interpreted
as a defect of the phone.
2. RANGE
Because radio frequencies are used,
the location of the base station can
affect the operating range of the
phone. Try several locations and
choose the one that gives the clear-
est signal to the handset. (Turning
in a circle while holding the handset
may also increase the operating
range.)
3. INTERFERENCE
Electronic circuits activate a relay to
connect the unit to your telephone
line. These electronic circuits oper-
ate in the radio frequency spectrum.
While several protection circuits are
used to prevent unwanted signals,
there may be periods when these
unwanted signals enter the base
station. You may hear a click or hear
the relay activate when you are not
using the cordless handset. If this oc-
curs frequently, you can minimize or
eliminate the problem by lowering the
height of the base station or relocat-
ing the base station. It may also be
helpful to change the operating chan-
nel and/or the security code setting.
Operation is subject to the following
two conditions: (1) this device may
not cause interference, and (2) this
device must accept any interference,
including interference that may cause
undesired operation of the device.
manual-en-pm5851-re1.indd 37 2006/9/7 19:02:25