GSM data transmission
The Nokia 9210 Communicator employs the data transmission capabilities of the
GSM network to send faxes, short messages, and e-mail, and to establish
connections with remote computers.
Wireless data connections can be made from most locations where your phone
operates. However, it is recommended that you move the communicator to a
location where the strongest possible wireless signal can be obtained. When the
signal is strong, data transmission is efficient. In general, you should not expect
the same performance from wireless data communications as from landline
communications, due to the inherent characteristics of the wireless environment.
The following factors may impair wireless connections:
Noise
Radio interference from electronic appliances and equipment, as well as from
other phones will affect the quality of wireless data transmission.
Cell handover
As the phone user moves from one network cell to another, the signal strength of
the channel drops and the wireless telephone exchange may handover the user 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 wireless traffic loads. Such
handovers may cause slight delays in the transmission.
©2001 Nokia Mobile Phones. All rights reserved.
9
Intr
od
uctio
n
Electrostatic discharge
A discharge of static electricity from a finger or a conductor may cause erroneous
functions in electric devices. The discharge may result in distorted display and
unstable software operation. Wireless connections may become unreliable, data
may become corrupted, and the transmission halted. In this case you need to end
the existing call (if any), close the cover and switch off the phone (if on) and
remove the battery. Then replace the battery and establish a new wireless
connection.
Dead spots and dropouts
Dead spots are areas where radio signals cannot be received. Dropouts occur when
the phone user passes through an area where the radio signal is blocked or reduced
by geographical features or large structures.
Signal impairment
Distance and obstacles can cause signals to become out-of-phase. They can also
cause reflected signals. Both situations result in a loss of signal strength.
Low signal strength
Due to either distance or obstacles, the radio signal strength from a cell site may
not be strong or stable enough to provide a reliable data connection for
communication. Therefore, to ensure the best possible communication, remember
the following points:
©2001 Nokia Mobile Phones. All rights reserved.
10
Intr
od
uctio
n
• The data connection works best when the communicator is in a stationary
position. Attempting wireless data communication while in a moving vehicle is
not recommended. Fax transmission is more easily impaired than data or short
message transmission.
• Do not place the communicator on a metal surface.
• Check that the signal strength on the communicator display is sufficient.
Moving the communicator within a room, especially towards a window, may
result in a stronger signal. If signals are not strong enough to support a voice
call, data connection should not be attempted until you can find a location with
better signal reception.
Note: When the antenna is up, the signal is stronger.
©2001 Nokia Mobile Phones. All rights reserved.
11
G
enera
l informa
tion