Longshine LCS-8056C2 - Manual (Page 16)

Commands for Host-Processed Modems Reference Manual
2-6 Conexant 100498E
If all other relevant criteria are met (e.g., the modem is in the proper state), the command is
executed with any indicated subparameters. If <name> is not recognized, the modem issues
the ERROR result code and terminates processing of the command line. An ERROR is also
generated if a subparameter is specified for an action that does not accept subparameters, if
too many subparameters are specified, if a mandatory subparameter is not specified, if a value
is specified of the wrong type, or if a value is specified that is not within the supported range.
Action Test Command Syntax
The DTE may test if an action command is implemented in the modem by using the syntax:
+<name>=?
If the modem does not recognize the indicated name, it returns an ERROR result code and
terminates processing of the command line. If the modem does recognize the action name, it
returns an OK result code. If the named action accepts one or more subparameters, the modem
sends an information text response to the DTE, prior to the OK result code, specifying the
values supported by the modem for each such subparameter, and possibly additional
information. The format of this information text is defined for each action command.
2.4.4 Parameter Commands
Parameter Types
Parameters may be defined as "read-only" or "read-write". "Read-only" parameters are used to
provide status or identifying information to the DTE, but cannot be set by the DTE;
attempting to set their value is an error. In some cases (specified in the description of the
individual parameter), the modem may ignore attempts to set the value of such parameters
rather than respond with an ERROR result code, if the continued correct operation of the
interface between the modem and DTE will not be affected by such action. Read-only
parameters may be read and tested.
"Read-write" parameters may be set by the DTE, to store a value or values for later use. Read-
write parameters may be set, read, and tested.
Parameters may take either a single value, or multiple (compound) values. Each value may be
either numeric or string; the definition of the parameter will specify the type of value for each
subparameter. Attempting to store a string value in a numeric parameter, or a numeric value in
a string parameter, is an error.
Parameter Set Command Syntax
The definition of the parameter indicates, for each value, whether the specification of that
value is mandatory or optional. For optional values, the definition indicates the assumed
(default) value if none is specified; the assumed value may be either a previous value (i.e., the
value of an omitted subparameter retains its previous value), or a fixed value (e.g., the value
of an omitted subparameter is assumed to be zero). Generally, the default value for numeric
parameters is 0, and the default value for string parameters is "" (empty string).
The following syntax is used for parameters that accept a single value:
+<name>=[<value>]
The following syntax is used for parameters that accept more than one value:
+<name>=[<compound_value>]
For each implemented parameter, if all mandatory values are specified, and all values are
valid according to the definition of the parameter, the specified values are stored. If <name>