Ericsson T39 - Receiving a Call; Turning Your Phone Off

AT Commands 12
To set the built-in modem to operate with autobaud over an asynchronous connection, the command line would
be:
AT+CBST=0,0,1
However, the commands also have default settings. These are values which are assumed to have been entered
when no actual value is placed in the command line.
For example, the above command can be entered as:
AT+CBST=,,1
The default values used by the commands are indicated by bold text in the following descriptions.
When the parameter is a character string (for example “<name>”) then the value should be entered between
quotes. For example “Peter”.
Optional parameters are shown in square brackets. For example [<value>].
2. Entering an execute command
Execute commands are very similar to set commands. They usually do not require any parameters and are used to
obtain information about the mobile phone or built-in modem or to execute an event.
For example, to find out information about the mobile phone battery, enter the +CBC command:
AT+CBC
The built-in modem responds:
+CBC: 0,60
indicating that the mobile phone battery is connected (0) and that the remaining charge is 60%.
To answer an incoming call, you execute the A command:
ATA
3. Using read command to view the command settings
To check the current settings of a command, use the ‘?’ option.
For example, to check the current settings of the +CBST command, enter:
AT+CBST?
If CBST has been set according to the previous example, the settings are displayed as
+CBST: 0,0,1
4. Using test command to request command help
To test the availability of a command and the range of parameters, use the ‘=?’ option with the command.
For example, to check the parameters available to the command line in the example above, enter:
AT+CBST=?
The line:
+CBST: (0,4,6,7,68,70,71),(0),(1)
is displayed indicating the range of valid entries that can be set for the parameters <data rate>,
<bearer service>, and <connection element>.