
For Best Performance
Operating Range
•The range of operation depends on the topography
of your office, weather, or usage conditions,
because signals are transmitted between the CS
and the handset by radio waves.
•Normally, you get greater range outdoors than
indoors. If there are obstacles such as walls, noise
may interfere with your telephone calls. In
particular, high metal shelves or reinforced concrete
walls will restrict your operating range.
•A handset may not work when it is too far from the
CS depending on the structure of the building.
•We strongly suggest you hold the bottom half of the
handset to ensure better call quality. Because, the
antenna is located in the upper half of the handset.
Noise
Occasional noise or interference may occur due to
electromagnetic radiation from objects such as
refrigerators, microwave ovens, faxes, TVs, radios, or
personal computers. If noise disturbs your telephone
calls, keep the handset away from these electrical
appliances.
Environment
•Keep the product away from heating appliances
and devices that generate electrical noise, such as
fluorescent lamps and motors. These noise sources
can interfere with performance of the product.
•Do not place the product in rooms where the
temperature is less than 0 °C (32 °F) or greater than
40 °C (104 °F).
•Allow 10 cm (3-15/16 in) clearance around the
product for proper ventilation.
•Avoid environments with excessive smoke, dust,
moisture, mechanical vibration, shock, or direct
sunlight.
•The apparatus is designed to be installed and
operated under controlled conditions of ambient
temperature and a relative humidity.
Routine Care
•Unplug the charger from the AC outlet before
cleaning.
•Wipe the product with a soft cloth.
•Do not clean the product with abrasive powder or
with chemical agents such as benzine or thinner.
•Do not use liquid cleaners or aerosol cleaners.
•Clean the terminal of the charger periodically.
Placement
•Do not place heavy objects on top of the handset
and charger.
•Care should be taken so that objects do not fall onto,
and liquids are not spilled into, the product.
•Place the charger on a flat surface. If the charger is
mounted on the wall, install it straight.
Battery Information
After your batteries are fully charged (at 25 °C [77 °F]):
Operation Operating Time
While Talking
(Backlight off*1, Narrowband
Mode)
Up to about 11 h
While Talking
(Backlight on*2, Wideband
Mode)
Up to about 8 h
While not in use
(Standby) Up to about 200 h
*1 When the "Talking" setting of "Backlight" is set to "Off". For
details, see "Display Option (Page 43)".
*2 When the "Talking" setting of "Backlight" is set to "On". For
details, see "Display Option (Page 43)".
•Operating time may be shorter than listed above
depending on usage conditions and ambient
temperature.
•The batteries will drain slowly even while the
handset is turned off.
•The handset can receive calls while charging.
•Battery consumption increases when the handset is
out of range (if " " flashes, turn the handset off).
•Clean the handset and the charger contacts
with a soft, dry cloth once a month. Clean more
often if the unit is subject to grease, dust or high
humidity. Otherwise the batteries may not charge
properly.
Low Battery Warning
The batteries need to be charged in the following
situations:
•The battery level indicator displays as empty (" ")
and the alarm sounds*1.
•"Charge Battery" is displayed. In this situation,
the handset cannot be operated.
*1 If the low battery warning occurs during a conversation, the
handset will turn off in one minute.
Document Version 2013-03 Operating Instructions 11
Important Information