Synxcom SM9234D, User Manual

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AT Commands
Page 33
Repeating a Command Line
If the prefix "A/" or "a/" is received, the modem 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 in this
manner.
Responses to the repeated command line are issued using format of the original
command line. If "A/" is received before any command line has been executed, the
preceding command line is assumed to have been empty (that results in an OK
result code).
Types of DTE Commands
There are two types of commands: action commands and parameter commands.
Commands of either type may be included in command lines, in any order.
Action commands may be "executed" (to invoke a particular function of the
equipment, which generally involves more than the simple storage of a value for
later use), or "tested" (to determine whether or not the equipment implements the
action command, and, if sub parameters are associated with the action, the ranges
of sub parameter values that are supported).
Parameters may be "set" (to store a value or values for later use), "read" (to
determine the current value or values stored), or "tested" (to determine whether or
not the equipment implements the parameter, and the ranges of values supported).
Basic Syntax Commands
Basic Syntax Command Format
The format of Basic Syntax commands, except for the D and S commands, is as
follows:
<command>[<number>]
where <command> is either a single character, or the "&" character followed by a
single character per V.250. In addition, <command> can be the "%" character
followed by a single character, the "*" character followed by a single character, or
the "^" character followed by a single character.