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Technical reference section
ATXn - Extended connect message
Option
Result
ATX0
The GSM module returns only the CONNECT code as soon as a satisfac-
tory connection has been set up. A busy signal is ignored.
ATX1
The GSM module transmits an extended connect message with transfer
rate information (CONNECT xxxx) as soon as a satisfactory connection has
been set up. For more information on extended result codes, see the ATV1
command. A busy signal is ignored.
ATX2
Same as ATX1.
ATX3
As in the case of ATX1, the GSM module transmits an extended connect
message. A busy signal is detected and, if applicable, the BUSY code is
returned.
ATX4
As in the case of ATX1, the GSM module transmits an extended connect
message. A busy signal is detected and, if applicable, the BUSY code is
returned.
Control line options
AT&Cn - Data Carrier Detect (DCD) options
This command affects the DCD line connected to the computer's serial interface.
Option
Result
AT&C0
The GSM module sets the DCD control line connected to the computer's
serial interface to ON regardless of the data carrier status of the distant
station.
AT&C1
DCD specifies the data carrier status of the distant station. DCD ON
indicates that a connection exists.
ATXn
AT&Cn
[n=0..4]
[n=0,1]
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