User's Manual

33
Appendix II
AT COMMANDS
The table below lists the AT commands supported for establishing a connection via GSM
or 3G/GPRS separately. You can click the desired command as below for more
information.
AT Commands
Description
GSM
Mode
3G/GPRS
Mode
AT Get echo from the cradle. √ √
ATDT Dial out to establish a data connection via GSM or
3G/GPRS.
√ √
ATF Load factory defaults. √ √
ATW Write the current settings to flash. √ √
AT+APN? Get the Access Point Name (APN) currently in use. √
AT+APN= Set the Access Point Name (APN) you want to connect
to.
√
AT+CGSN? Get the 15-digit IMEI number. √ √
AT+CHAP? Get the Challenge-Handshake Authentication Protocol
(CHAP) setting.
√
AT+CHAP= Set the Challenge-Handshake Authentication Protocol
(CHAP) setting, enable or disable.
√
AT+CLCK=SC, 2 Get the information about whether PIN authentication is
applied to the facility lock of SIM card.
√ √
AT+CLCK=SC,
<Parameter>,
<PIN>
Set PIN authentication, enable or disable.
√ √
AT+CPIN? Get the information about whether PIN or PUK code is
required.
√ √
AT+CPIN= Set PIN code for authentication. √ √
AT+CPWD=SC Change PIN code of SIM card. √ √
AT+DHCP? Get the Dynamic Host Configuration Protocol (DHCP)
setting.
√
AT+DHCP= Set the Dynamic Host Configuration Protocol (DHCP)
setting, enable or disable.
√
AT+DLMT? Get the delimiter check status, as well as the used
delimiter character.
√ √
AT+DLMT= Set the delimiter check, enable or disable. √ √
AT+DOWNLOAD Download firmware to the cradle. √ √
AT+ERR? Get the last 4 digits of error code for the initialization
procedure.
√ √