Chapter 16 – Extended AT Commands in IS707.3
Multi-Tech Systems, Inc. CDMA Wireless AT Commands (PN S000294J)
115
Cellular Extension +CXT
Description
:
The numeric parameter is used for cellular extension.
Values: <Val>
0
Do not pass unrecognized commands to the IWF
1
When detecting an unrecognized AT command, open transport layer connection and pass
unrecognized command to the IWF.
Syntax:
Command syntax:
AT+CXT=<Val>
Command
Possible Responses
AT+CXT?
Note: Display the current setting.
+CXT: 0
OK
Note: Command is valid
AT+CXT=?
Note: Display the range of setting.
+CXT: (0-1)
OK
Note: Command is valid
AT+CXT=1
Note: Enable extension.
OK
Note: Command is valid
Configuration String +CFG
Description:
The string command is used to set configuration string. The string will be stored by the DCE and sent to the
base station prior to dialing. Each transmission of an AT+CFG command from DTE replaces the contents of
the previous string. The string may be up to 248 characters in length.
Syntax
:
Command syntax:
AT+CFG=<string >
Command
Possible Responses
AT+CFG?
Note: Display the current setting.
+CFG: “”
OK
AT+CFG=””
Note: Reset the configuration string.
OK
Note: Command is valid
AT+CFG=”data”
Note: Set the configuration string.
OK
Note: Command is valid
Query Service +CAD
Description:
The numeric parameter is used to query analog or digital service.
Values:
The command should return one of the following codes:
0
If no service is available
1
If CDMA digital service is available
2
If TDMA digital service is available
3
If analog service is available (values 4 to 255 reserved)
Syntax:
Command syntax:
AT+CAD
Command
Possible Responses
AT+CAD?
Note: Display the current service.
+CAD: 1
OK
Note: Command is valid
AT+CAD=1
Note: Set the current service.
ERROR
Note: Command is not valid
AT+CAD=?
Note: Display the available service
values.
+CAD:
OK
Note: Command is valid but no
value ranges are returned.
Note:
This is a read-only command.