
Mitel®INT4000 User Guide – Issue 6, December 2008 Page v
Privacy
Cordless endpoints are radio devices. Communications between the Handset and Base Unit of your cordless
telephone are accomplished by means of radio waves which are broadcast over the open airways. Because of the
inherent physical properties of radio waves, your communications can be received by radio receiving devices other
than your own cordless telephone unit. Consequently, any communications using your cordless telephone may not be
private.
Battery Packs
The Battery Packs contain rechargeable, sealed, Nickel-Metal Hydrate batteries. To reduce the risk of fire or injury to
persons by the battery, read and follow these instructions:
• Use only the appropriate type and size Battery Pack specified in this user guide.
• Do not dispose of the Battery Pack in a fire. The cell may explode.
• Do not open or mutilate the Battery Pack. Released electrolyte is corrosive and may cause damage to the eyes
or skin. It may be toxic if swallowed.
• Exercise care in handling the Battery Pack in order not to short the battery with conducting materials such as
rings, bracelets, and keys. The battery or conductor may overheat and cause burns.
• Do not charge the Battery Pack used in this telephone in any charger other than the one provided with it. Using
another charger may damage the battery, or cause the battery to explode.
• Observe proper polarity orientation between the Battery Pack and Battery Charger.
• Do not short circuit the Battery Pack.
Radio Interference
Radio interference may occasionally cause buzzing and humming in your cordless Handset, or clicking noises in the
Base Unit. This interference is caused by external sources such as TV, refrigerator, vacuum cleaner, fluorescent
lighting, computer equipment, or 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 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 unit is fully extended when needed.
In the unlikely event that you consistently hear other voices or distracting transmissions on your endpoint, you may be
receiving radio signals from another cordless telephone or other 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.
Range Limits
The INT4000 is designed for commercial use. Range has been approved for 150 feet per Base Unit. Actual range
may be less or greater than this distance depending on the environment. Building wiring, walls, elevators and other
electronic interference frequencies may limit the range of this telephone. Consult your telecommunications consultant
for testing of your location.
To maximize the range capability, do one of the following:
• Locate the Base Unit at the highest point possible in the center of your coverage zone. If you are planning to
cover an outdoor area, such as a car lot, building grounds, or campus, place the unit near a window and the
highest point within the building.
• Place the Base Unit away from any electronic device. This includes, but is not limited to, computer screens,
radios, electronic signs, coffee pots, microwaves, and other electronic devices.