GSM/GPRS Module
M35 AT Commands Manual
M35_AT_Commands_Manual Confidential / Released 31 /
186
3
Serial Interface Control Commands
3.1. AT&C Set DCD Function Mode
Parameter
3.2. AT&D Set DTR Function Mode
Parameter
AT&C Set DCD Function Mode
Execution Command
AT&C[<value>]
Response
This parameter determines how the state of circuit 109(DCD)
relates to the detection of received line signal from the distant
end.
OK
Reference
V.25ter
<value>
0
DCD line is always ON
1
DCD line is ON only in the presence of data carrier
AT&D Set DTR Function Mode
Execution Command
AT&D[<value>]
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
Reference
V.25ter
<value>
0
TA ignores status on DTR
1
ON->OFF on DTR: Change to command mode with remaining the connected call