Comtrol AT Commands - Manual (Page 18)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant 102184B
2-4
2.4 Extended Syntax Commands
2.4.1 Command Naming Rules
Both actions and parameters have names, which are used in the related commands.
Names always begin with the character "+". Following the "+", from one to 16 additional
characters appear in the command name. These characters will be selected from the
following set:
A through Z (IA5 4/1 through 5/10)
0 through 9 (IA5 3/0 through 3/9)
! (IA5 2/1)
% (IA5 2/5)
- (IA5 2/13)
. (IA5 2/14)
/ (IA5 2/15)
: (IA5 3/10)
_ (IA5 5/15)
The first character following the "+" is an alphabetic character in the range of "A"
through "Z". This first character generally implies the application in which a command is
used (e.g., F for Fax or V for voice).
The modem considers lower-case characters to be the same as their upper-case
equivalents.
2.4.2 Values
When subparameters are associated with the execution of an action, or when setting a
parameter, the command may include specification of values. This is indicated by the
appearance of <value> in the descriptions below.
<value> consists of either a numeric constant or a string constant.
Numeric Constants
Numeric constants are expressed in decimal, hexadecimal, or binary.
Decimal numeric constants consist of a sequence of one or more of the characters "0"
through "9", inclusive.
Hexadecimal numeric constants consist of a sequence of one or more of the characters
"0" through "9", inclusive, and "A" through "F" inclusive. The characters "A" through
"F" represent the equivalent decimal values 10 through 15.
Binary numeric constants consist of a sequence of one or more of the characters "0" and
"1".
In all numeric constants, the most significant digit is specified first. Leading "0"
characters are ignored by the modem. No spaces, hyphens, periods, commas, parentheses,
or other generally-accepted numeric formatting characters are permitted in numeric
constants; note in particular that no "H" suffix is appended to the end of hexadecimal
constants.