Synxcom SM9234D, User Manual

Page: 45 / 216

AT Commands
Page 45
+<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.
For example, the following are some examples of value range indications:
(0) Only the value 0 is supported.
(1,2,3) The values 1, 2, and 3 are supported.
(1-3) The values 1 through 3 are supported.
(0,4,5,6,9,11,12) The several listed values are supported.
(0,4-6,9,11-12) An alternative expression of the above list.
Compound Range of Values
When the action accepts more than one subparameter, or the parameter accepts
more than one value, the set of supported values is presented as a list of the
parenthetically-enclosed value range strings described above, separated by
commas. For example, the information text in response to testing an action that
accepts three subparameters, and supports various ranges for each of them, could
appear as follows:
(0),(1-3),(0,4-6,9,11-12)