1vv0301515 Rev.1
Page 12 of 59
2018-07-18
2.
AT COMMANDS
After power on, the module is in sleep mode by default. To exit from this mode, and enter
the full functionality mode, must be followed these steps:
1. Connect, for example, the Telit AT Controller tool to the module
2. Select on the tool the hardware handshaking
3. Power on the module
4. Activate the connection. If the connection is successfully done, the tool shows
information about the module that is in sleep mode. To exit sleep mode, enter the
following AT command:
AT+ESLP=0
to go back, enter:
AT+ESLP=1
Serial Port Speed
Here is the V.24 serial interface standard provided by the Main Serial Port of the modules. To
have hardware information refer to document [1].
After power on, the module is ready to receive AT commands on its Main Serial Port.
Its second
serial port, called Auxiliary, is used for factory test.
For example, type in the following AT command to verify if the DTE/DCE connection is working.
AT
OK
Use the following AT command to configure the Main Serial Port speed.
AT+IPR=<rate>
Use the Test command to get the Main Serial Port speed range expressed in bps; 0 =
autobauding
.
DTE (User Application)
DCE (Telit Module)
TxD
RxD
RTS
CTS
DTR
DSR
RI
DCD
GND
TxD
RxD
RTS
CTS
DTR
DSR
RI
DCD
GND
