Iwatsu DCKT970 Owner's Manual page 19

Chapter 2 Introduction
If you are having trouble with your telephone service, you
must first disconnect your phone to determine if it is the
cause of your problem. If you determine that it is the cause,
you must leave it disconnected until the trouble has been
corrected.
Radio Interference
Radio interference may occasionally cause buzzing and
humming in your DCKT970 Digital Wireless Key Telephone,
or clicking noises in the Base Unit. This interference is
caused by external sources such as a TV, refrigerator, vacuum
cleaner, fluorescent lighting, computer equipment or an
electrical storm. Your unit is NOT DEFECTIVE. If these
noises continue and are too distracting, please check around
your office to see what appliances may be causing the
problem. In addition, we recommend that the Base Unit not
be plugged into a circuit that also powers a major appliance
because of the potential for interference. Be certain that the
antenna on the Base Unit is fully extended when needed.
In the unlikely event that you consistently hear other voices
or distracting transmissions on your phone, you may be
receiving radio signals from another cordless telephone or
another source of interference. If you cannot eliminate this
type of interference, you need to change to a different
channel.
Finally, it should be noted that some cordless telephones
operate at frequencies that may cause interference to nearby
TVs and VCRs. To minimize or prevent such interference,
the base of the cordless telephone should not be placed near
or on top of a TV or VCR. If interference is experienced,
moving the cordless telephone farther away from the TV or
VCR will often reduce or eliminate the interference.
More Than One DCKT970
If you want to use more than one DCKT970 Digital Wireless
Key Telephone in your office, they must operate on different
11