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Siemens M1 User Manual

Page 28

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GSM M1 Module, English: A24859-N4000-A100-1-7677

gsm-m1-e.fm

Technical reference section

6.3.96

This command affects the DCD line connected to the computer’s serial interface.

ATXn - Extended connect message

Control line options

AT&Cn - Data Carrier Detect (DCD) options

ATXn [n=0..4]

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.

AT&Cn

[n=0,1]

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.