AT&T 7400B Plus User Manual page 158

APPENDIX C: S-REGISTERS
Page C-2
Label
Register:
Description:
Range of
Values:
Description
The S-register is identified following this label. Note that the
names for S-registers 1 through 9 may be typed as two-digit
numbers with leading zeros, if desired, for readability (e.g., S01 is
equivalent to S1).
The purpose and use for the S-register is explained following this
label.
The range of values that may be assigned to the register is
explained following this label. The units for the value may be as
follows:
decimal—a one- to three-digit decimal number. Decimal
numbers are typically used to represent a count, seconds, or
fractions of a second.
ASCII—a one- to three-digit decimal number that represents
the decimal equivalent for an ASCII character (see ASCII
Character Table in Appendix E, "Quick-Reference
Summaries").
hexadecimal—a two-digit hexadecimal number used to
represent the contents of a bit-mapped S-register. Bit-
mapped S-registers are not usually set by entering a complete
value for the register, but are set one or more bits at a time by
various ''AT'' commands. Hexadecimal digits include the
decimal digits 0 through 9, and the letters A through F.
Notes:
A value typed as a decimal or ASCII argument to a
1
command may be entered as a one, two, or three
digit number, as required, but will always be
displayed as a three digit number (for example,
you type the command ATS0=3 to set automatic
answer feature to answer an incoming call on the
third ring, and then type the AT&V command to
verify the value, which is displayed as S00:003).
The &V command, which displays the contents of
2
all S-registers, presents the contents of bit-mapped
registers as two hexadecimal digits followed by an
uppercase letter H (for example, assuming that
S-register S14 contains the value AA hexadecimal,
the AT&V command displays S14:AAH).
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DEFINITY Communications System
7400B Plus Data Module
User´s Guide