Data Sheet

Smart Machine Smart Decision
detection are both disabled.
1 CONNECT<text> result code only returned, dial tone and
busy detection are both disabled.
2 CONNECT<text> result code returned, dial tone
detection is enabled, busy detection is disabled.
3 CONNECT<text> result code returned, dial tone
detection is disabled, busy detection is enabled.
4 CONNECT<text> result code returned, dial tone and
busy detection are both enabled.
Parameter Saving AT&W_SAVE
Mode
Max Response -
Time
Reference Note
V.25ter
2.2.27 ATZ Reset Default Configuration
ATZ Reset Default Configuration
Response
TA sets all current parameters to the user defined profile.
OK
ERROR
Execution
Command
ATZ[<value>]
Parameters
<value> 0 Restore profile 0
Parameter Saving NO_SAVE
Mode
Max Response -
Time
Reference Note
V.25ter
Parameter impacted by Z command: refer to AT&W
NOTE:
Parameters related to uart operation, like ipr, icf, ifc and cmnrp, will not be reset to default
configuration.
2.2.28 AT&C Set DCD Function Mode
AT&C Set DCD Function Mode
Execution Response
This parameter determines how the state of circuit 109 (DCD) relates to the
Command
AT&C<value>
detection of received line signal from the distant end.
SIM800 Series_AT Command Manual_V1.05 44 2014-07-31