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handover may also occur when the user is stationary due to
varying cellular traffic loads. Such handovers may cause delays.
Dead spots and dropouts
Dead spots are areas where radio signals cannot be received.
Dropouts occur when the car kit phone user passes through an
area where the radio signal is blocked or reduced by geographic
or man-made obstructions such as hills or high buildings. The
consequences may be interruptions in service or the connection
may fail.
Low signal strength
Due to either distance from a base station or obstacles between
your car kit phone and the base station, the radio signal
strength from a cell site may not be strong or stable enough to
provide a reliable cellular connection for trouble-free reception
or transmission. Therefore, to ensure the best possible
communication, remember to take the following points into
consideration when using your car kit phone:
Data and fax transmission will work best when the car is
stationary as this ensures that the signal strength will remain
constant. Attempting cellular communication while in a moving
vehicle is not recommended. Fax transmission is more easily
impaired than data or short message transmission.
Check the signal strength on your car kit phone display. If the
cellular signals are not strong enough to support a voice call,
data connection should not be attempted until you can find a
location with better reception.