Motorola g20 - Table 70. &D Parameters

98-08901C68-O 155
AT Commands Reference
4.7.1.10 &D, Circuit 108 Behavior
This command determines how the g20 responds when the DTR (Data Terminal Ready) status is changed from ON to OFF
during the online data state. The DTR is an input line that indicates that the terminal is ready.
The DTR line must be active (low) in order for the g20 to recognize the terminal. This signal is raised by the terminal when a
process activates the serial port. If the DTR is not used by the application, it should connect this line to ground (DTR active).
The default value is active (low).
Set Command
Read Command
Test Command
The following table shows the &D parameters.
Command Response/Action
AT&D<param> OK
Command Response/Action
AT&D? &D:<param>
Command Response/Action
AT&D=? &D:(list of supported <param>s)
Table 70. &D Parameters
<Parameter> Description
<param> The g20’s reaction when the DTR status is changed from
ON to OFF.
In CSD calls:
0 Ignores DTR changes.
1 Switches the CSD call to asynchronous command
mode (the call remains connected).
2 Disconnects the call and returns to the command
mode.
In GPRS calls:
0 Ignores DTR changes.
1-2 Deactivates the GPRS and returns to command
mode.
The default value is 2.