Nokia ?110 User Manual page 7

Data connections can be made from most locations where your wireless
LAN card operates. However, it is recommended that you move the wireless
LAN card to a location where the strongest possible network signal can be
obtained. When the signal is strong, data transmission is efficient.
The following factors may impair wireless connections:
Noise
Electronic appliances and equipment can cause radio interference. Also in
areas where wireless LAN cards are prevalent, other wireless LAN cards can
impair the wireless connection.
Roaming
As the wireless LAN card user moves from one access point coverage area to
another, the signal strength of the channel drops. As a consequence, the
network may hand the user over to a coverage area and frequency where the
signal is stronger. Due to varying network traffic loads, roaming may also
occur when the user is stationary.
Electrostatic discharge
A discharge of static electricity from a finger or a conductor may cause
erroneous functions in electrical devices. The discharge may result in
unstable software operation. Network connections may become unreliable,
data may be corrupted, and the transmission halted. In this case, end the
existing connection (if any), stop the wireless LAN card, and remove it from
the PC card slot. Then re-insert the wireless LAN card into the PC card slot
and try connecting again.
Dead spots and dropouts
Dead spots are areas where radio signals cannot be received. Dropouts occur
when the wireless LAN card user passes through an area where the radio
signal is blocked or reduced by geographical or structural obstructions, such
as concrete walls.
Signal impairment
Distance and obstacles can cause out-of-phase reflected signals that result in
a loss of signal strength.
Low signal strength
Due to either distance or obstacles, the radio signal strength from an access
point may not be strong or stable enough to provide a reliable wireless
connection for communication. Therefore, to ensure the best possible
communication, remember to consider the following points:
• Data connection works best when the wireless LAN card is in a stationary
position.
• Do not place the wireless LAN card on a metal surface.
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