Nokia RV-1 Manual Do Utilizador

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Reference information
70
Handovers
As the car kit user moves from one network cell to another, the 
signal strength of the channel drops and the cellular telephone 
exchange may hand the user over to a different cell and 
frequency where the signal is stronger. A cell 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 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 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: 
Data and fax transmissions work best when the car is stationary 
as this helps to maintain the signal strength. Attempting 
cellular data 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 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.