APPENDIX A: AT COMMAND SET
DEFINITY Communications System
7400B Plus Data Module
Page A-17
User´s Guide
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Command:
&F
Function:
Load the factory-default configuration.
Type:
immediate
Arguments:
none
S-Register:
none
Example:
at&f
(
Enter
)
fffffff
bbbbbbb
Comments:
The factory-default configuration values are permanently stored
in ROM and can be recalled at any time. No reset or self-test is
initiated by issuing the
&F
command.
See Also:
Chapter 3, "Configuration and Operation."
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Command:
&S
Function:
Data Set Ready (DSR) options.
Type:
configuration
Arguments:
The
&S
command accepts one of two arguments as follows:
0 - (or no argument) the DSR circuit is maintained on at all
times (factory-default setting)
1 - the DSR circuit operates according to the EIA-232-D
standard.
S-Register:
Bit 6 of S21 is set according to the argument used with the
&S
command.
Example:
at&s1
(
Enter
)
fffffff
bbbbbbb
Comments:
In the example, the DSR circuit is configured to operate
according to the EIA-232-D standard. Regardless of which
option is currently in effect, the DSR circuit of the 7400B Plus is
always off during self-test.
See Also:
Chapter 3, "Configuration and Operation."
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RAFT
