Longshine LCS-8056C2 - Manual (Page 13)

Commands for Host-Processed Modems Reference Manual
100498E Conexant 2-3
2.3 Basic Syntax Commands
2.3.1 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.
<number> may be a string of one or more characters from "0" through "9" representing a
decimal integer value. Commands that expect a <number> are noted in the description of the
command. If a command expects <number> and it is missing (<command> is immediately
followed in the command line by another <command> or the termination character), the value
"0" is assumed. If a command does not expect a <number> and a number is present, an
ERROR is generated. All leading "0"s in <number> are ignored by the modem.
Additional commands may follow a command (and associated parameter, if any) on the same
command line without any character required for separation. The actions of some commands
cause the remainder of the command line to be ignored (e.g., A).
See the D command for details on the format of the information that follows it.
2.3.2 S-Parameters
Commands that begin with the letter "S" are known as "S-parameters". The number following
the "S" indicates the "parameter number" being referenced. If the number is not recognized as
a valid parameter number, an ERROR result code is issued.
Immediately following this number, either a "?" or "=" character must appear. "?" is used to
read the current value of the indicated S-parameter; "=" is used to set the S-parameter to a
new value.
S<parameter_number>?
S<parameter_number>=[<value>]
If the "=" is used, the new value to be stored in the S-parameter is specified in decimal
following the "=". If no value is given (i.e., the end of the command line occurs or the next
command follows immediately), the S-parameter specified may be set to 0, or an ERROR
result code issued and the stored value left unchanged. The ranges of acceptable values are
given in the description of each S-parameter.
If the "?" is used, the modem transmits a single line of information text to the DTE. The text
portion of this information text consists of exactly three characters, giving the value of the S-
parameter in decimal, with leading zeroes included.