Nokia 810 Installation Manual page 55

Reference information
Low signal strength
Due to either distance from a base station or obstacles between
your car 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 phone:
Data and fax transmission will work best when the car is
stationary. Attempting cellular communication while in a
moving vehicle is not recommended. Fax transmission is more
easily impaired than data or text message transmission.
Check the signal strength on your car 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.
Data transfer over the RS232 interface
Connect your compatible laptop computer to the car phone
system with the adapter cable (D-SUB9 to 10-pin western)
supplied with the phone.
Should you wish to transfer data between your car phone and a
compatible laptop, plug the 10-pin western connector into the
port provided in the radio unit. The D-SUB9 connector plugs
into the laptop. A compatible mobile fax device can also be
connected. For further information, see "Overview of the car
phone and equipment" on page 7.
To use your modem, you must select the data transmission
speed Standard 19200 bps on the laptop. For more information,
see the Nokia Web site: http://www.nokia.com.
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