AT&T 7400B Plus User Manual page 136

APPENDIX A: AT COMMAND SET
Page A-4
Command:
Function:
Type:
Arguments:
S-Register:
Example:
Comments:
See Also:
A/
Re-execute the last valid command line.
immediate
none
none
a/
This is one of the two commands that does not require the ''AT''
prefix (+++ is the other one). To repeat the previously executed
command line exactly, type A/ without pressing the Return or
Enter key. This command cannot be combined with any other
command.
Chapter 3, "Configuration and Operation."
DEFINITY Communications System
7400B Plus Data Module
User´s Guide