Test Command

Syntax: <CMD_NAME>=?

This command is sent by the DTE to determine if the named command is implemented in the DCE, and, if so, the range of values supported. If the named command is supported, the DCE returns the OK result code; ERROR otherwise.

If the command supports a range of values or compound value strings, the DCE reports the range of values or compound value string as described below, then returns the OK result code.

The supported values are presented in info-text format, as an ordered list preceded by a ( (left parenthesis character) and followed by a ) (right parenthesis character), ASCII 40 and 41 (decimal). If the value is a compound one, the supported values are reported, enclosed in parentheses and separated by commas. An ordered list consists of a single value, a set of values separated by commas, or as two values separated by a hyphen to denote an inclusive range of values.

An example DCE response to a parameter test is:

<CR><LF>(0-255),(0-2,5)<CR><LF>

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