Product data

USRobotics
Command Reference
Syntax and Procedures - 10
In case of an error, all previous values of the parameter are unaffected.
Parameter Read Command Syntax
The DTE may determine the current value or values stored in a parameter by
using the following syntax:
+<name>?
The modem responds by sending the current values stored for the parameter to
the DTE in an information text response. The format of this response is described
in the definition of the parameter. Generally, the values are sent in the same form
in which they would be issued by the DTE in a parameter setting command; if
multiple values are supported, they will generally be separated by commas, as in
a parameter setting command.
Parameter Test Command Syntax
The DTE may test if a parameter is implemented in the modem, and determine
the supported values, 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 parameter name, it returns an information text response to the DTE,
followed by an OK result code. The information text response indicates the values
supported by the modem for each such subparameter, and possibly additional
information. The format of this information text is defined for each parameter.
Additional Syntax Rules
Concatenating Commands after Extended Syntax Commands
Additional commands may follow an extended-syntax command on the same
command line if a semicolon (";") is inserted after the preceding extended
command as a separator. The semicolon is not necessary when the extended
syntax command is the last command on the command line.
Concatenating Commands after Basic Format Commands
Extended syntax commands may appear on the same command line after a basic
syntax command without a separator, in the same manner as concatenation of
basic syntax commands.
Issuing Commands
All characters in a command line must be issued at the same data rate, and with