Extended Syntax Commands; Command Naming Rules; Values; Numeric Constants - Conexant H08-15355F Reference Manual

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 "+" must be 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.

2.4.2.1 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.

2.4.2.2 String Constants

String constants consist of a sequence of displayable IA5 characters, each in the range from 2/0 to 7/15, inclusive, except for
the characters '"' (IA5 2/2) and "\" (IA5 5/12). String constants are bounded at the beginning and end by the double-quote
character ('"', IA5 2/2).
Any character value may be included in the string by representing it as a backslash ("\") character followed by two
hexadecimal digits. For example, "\0D" is a string consisting of the single character <CR> (IA5 0/13). If the "\" character itself
is to be represented in a string, it is encoded as "\5C". The double-quote character, used as the beginning and ending string
delimiter, is represented within a string constant as "\22".
A "null" string constant, or a string constant of zero length, is represented by two adjacent delimiters ("").
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Command Reference Manual
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