W&T 58620, Руководство пользователя

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40
W&T
Modem Operation
• Omitting a numerical parameter has the same effect as
indicating a
0 .
• The boldface parameters are the standard values that are
created by
AT&F .
In addition to these commands, A/ (without a preceding AT or
concluding < cr >) is accepted as an entry to completely repeat
the last command line again.
5.4.1 A (ATA)
Accept incoming call
If the serial application detects an incoming call by means of
the RING sequences send by the LAN-Modem, the call can be
picked up by sending this command. After the network
connection with the communication partner has been
established, the LAN-Modem sends the message
CONNECT over
the serial interface and automatically switches to data mode.
Along with each serial output of the RING character string, an
incoming connection request causes the interface signal RI
(=Pin 9) to be set high for approx. 1s.