Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 35 2012.12.10
ATE <echo> 0x01
ATQ <result> 0x00
ATV <format> 0x01
ATX <result> 0x04
AT&C <behavior> 0x01
AT&D <behavior> 0x01
AT+IFC <TA_by_TE> 0x00
AT+IFC <TE_by_TA> 0x00
AT+FCLASS <class> 0x00
ATS0 <num> 0x00
ATS3 <char> 0x00
ATS4 <char> 0x0D
ATS5 <char> 0x0A
ATS7 <time> 0x08
ATS8 <time> 0x32
ATS10 <time> 0x0E
2.2.28 AT&C Set DCD Function Mode
AT&C Set DCD Function Mode
Response
This parameter determines how the state of circuit 109 (DCD) relates to the
detection of received line signal from the distant end.
OK
ERROR
Execution
Command
AT&C[<value>]
Parameter
<value> 0 DCD line is always ON
1 DCD line is ON only in the presence of data carrier
Reference
V.25ter
Note
2.2.29 AT&D Set DTR Function Mode
AT&D Set DTR Function Mode
Response
This parameter determines how the TA responds when circuit 108/2 (DTR)
is changed from the ON to the OFF condition during data mode.
OK
ERROR
Execution
Command
AT&D[<value>]
Parameter