3.2.1.3. AT#/ - Repeat Last Command
The command immediately executes the previously issued command or commands.
AT#/
If AT#/ is issued, the device immediately executes once again the body of
the preceding command line. No editing is possible, and no termination
character is necessary. A command line may be repeated multiple times
through this mechanism, if desired.
If AT#/ is issued before any command line has been executed, the
preceding command line is assumed to have been empty (that results in
an OK result code).