Table of Contents
Advertisement
AT%D
This command allows to activate a DATA or VOICE autocall to the number stored in the first
location of the SIM phonebook; or the automatic sending of an SMS stored in the SIM first location.
The number is dialed when DTR passes from OFF to ON status; the short message is sent when
DTR passes from OFF to ON status.
Command
AT%D0
AT%D1
AT%D1;
AT%D2
Default: AT%D0
AT&C
This command defines the management of the DCD (C109) on the modem serial port. If controlled
(AT&C1), the DCD ON indicates the connection with a remote device. If forced (AT&C0) regardless
of the status (connected/disconnected), the DCD is always ON.
Note: Data Carrier Detect can be controlled in DATA and FAX modes only.
Command
Possible answers
AT&C0
OK
AT&C1
OK
Default: AT&C1
AT&D
This command defines the management of the DTR (C108) on the modem serial port. The DTR
comes from the DTE (e.g. PC) to the modem, for this reason the criterion can be present or
absent. If absent, the modem must be configured to ignore the criterion (AT&D0). If present, the
modem will accept the call only if the criterion is ON.
For further information on AT&D command, see chapter "Functional Examples".
Command
Possible answers
AT&D0
OK
AT&D1
OK
AT&D2
OK
Default: AT&D2
AT&F
This command is used to load the factory settings for the command listed in the table.
Command
AT&F
Q
S0
+CMGF
+CNMI
+ECHO
+ILRR
20
Automatic dialing with DTR (C108)
Possible answers
OK
OK
OK
OK
Data Carrier Detect (C109)
Data Terminal Ready (C108)
Restore factory settings
Possible answers
OK
Commands restored with AT&F
V
+COPS
+SIDET
+SPEAKER
Action
Function disabled
Enables automatic dialing (DATA)
Enables automatic dialing (VOICE)
Enables automatic sending of the SMS
Action
Data Carrier Detect always ON
Data Carrier Detect is controlled and follows
the connection status
Action
DTR is ignored
Modem switches from data to command
mode when DTR switches from ON to OFF.
When DTR switches from ON to OFF, the
modem disconnects.
Action
Loads the factory configuration
%D
+CBST
+CR
+CRC
+VGR
+CLIP
+CMEE
+CREG
+CSMP
+VGT
Advertisement
Table of Contents
