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USRobotics
Command Reference
Syntax and Procedures - 14
duplication of basic format result codes specified in TIA-602. Following the "+"
character, the name of the result code appears; result code names follow the
same rules as command names.
Extended syntax result codes may include the reporting of values. The definition
of the result code specifies whether or not values are appended to the result code,
and, if so, how many, their types, and their assumed default values if omitted.
Data/voice Modes. When no values are to be reported, the result code appears in
the simplest form:
+<name>
If a single value is to be reported, the form of the result code is:
+<name>: <value>
A single space character separates the colon character from the <value>; no
space appears between the result code name and the colon. If multiple values are
to be reported with the result code, the form is:
+<name>: <compound_value>
Fax Modes
If a single value is to be reported, the form of the result code is:
<value> or (<value>)
+<name>: <compound_value>Information Text Formats for Test Commands
In general, the format of information text returned by extended syntax commands
is described in the definition of the command.
The modem may insert intermediate <CR> characters in very long information
text responses in order to avoid overrunning DTE receive buffers. If intermediate
<CR> characters are included, the modem does not include the character
sequences "0 <CR>"or "OK<CR>", so that DTE can avoid false detection of the
end of these information text responses.
Range of Values
When the action accepts a single numeric subparameter, or the parameter
accepts only one numeric value, the set of supported values may be presented in
the information text as an ordered list of values. The list is preceded by a left
parenthesis (() , and is followed by a right parenthesis ()). If only a single value is
supported, it appears between the parentheses. If more than one value is
supported, then the values may be listed individually, separated by comma
characters, or, when a continuous range of values is supported, by the first value
in the range, followed by a hyphen character (-), followed by the last value in the
range. The specification of single values and ranges of values may be intermixed
within a single information text. In all cases, the supported values are indicated in
ascending order.