For such applications you should use the peripheral attached directly to your COM port.
For any application to use the card it is necessary to install the appropriate device driver.
To use or configure the peripheral device it is necessary to connect it either to an ASCII terminal or a COM port of a PC on which there is installed some communication software.
The data sent by the DTE device to the modem is transmitted through to the remote modem/DTE device.
Note it is possible to alter the guard time.
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