Bedienungsanleitung Nokia 9500 Communicator (Seite 99 von 108) (Englisch)

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22. Data transmission

This device employs the data transmission capabilities of the GSM and WLAN networks to send multimedia messages, short

messages and e-mail, and to establish connections with remote computers, for example.

Wireless data connections can be made from most locations where your device operates, but it is recommended that you move

the device to a location where the strongest possible wireless signal can be obtained. When the signal is strong, data

transmission is efficient. Wireless data communications may perform differently from data communications transmitted over

wires. This is due to the inherent characteristics of the wireless environment. Wireless connections may experience "noise", low

or lost signals, and distortions.

Noise

Radio interference from electronic appliances and equipment, as well as from other phones may affect the quality of wireless

data transmission.

Roaming

As the device user moves from one network cell or WLAN access point coverage area to another, the signal strength of the

channel may drop. The network may hand over the user to a coverage area and frequency where the signal is stronger. Network

roaming may also occur when the user is stationary, due to varying network traffic loads. Such roaming may cause slight delays

in transmission.

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 distorted display and unstable software operation. Wireless connections may become unreliable, data may become

corrupted, and transmission halted. In this case you need to end the existing call (if any), switch off the device (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 device 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 WLAN access point or a cell site may not be strong enough

or stable enough to provide a reliable data connection for communication. Therefore, to ensure the best possible

communication, remember the following points:

• The data connection works best when the device is in a stationary position. Attempting wireless data communication while

in a moving vehicle is not recommended.

• Do not place the device on a metal surface.

• Check on the device display that the signal strength is sufficient. Moving the device within a room, especially towards a

window, may result in a stronger signal. If a signal is not strong enough to support a voice call, data connection should not

be attempted until you can find a location with better signal reception.

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