Benq Corporation 56D98 Manuel D’Utilisation

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Determines whether synchronization is conducted through the
USB data cable or IRDA.

This Baud rate setting option is used to adjust transmission speed
between your phone and PC.
The baud rate varies according to different types of computers.
Older computers may not be able to transmit data at the highest
speed. You should adjust the baud rate accordingly. After you make
adjustment to the baud rate of your phone, you need to re-
configure the baud rate on your PC as well.

Sets the above settings to their factory default values.

To enable the IrDA function, set IrDA as the interface of PC
synchronization, 

then you can synchronize the phone with a computer

through the phone's infrared port.