AT&T 7400B Plus User Manual page 170

APPENDIX C: S-REGISTERS
Page C-14
Register:
Description:
Range of
Values:
Storable:
Comments:
See Also:
S22
This S-register is used to store the status of bit-mapped options
as follows:
bits 0 and 1 — not used (default = 2, see comment 1)
bits 2 and 3 — not used (default = 1, see comment 1)
bits 4, 5 and 6 — result codes; value depends on argument of
result code options command (default = 0, see X command)
bit 7 — not used (default = 0, see comment 1)
Value may be 00 to FF hexadecimal; factory-default settings
produce a value of 76 hexadecimal (see comment 2).
yes
For the 7400B Plus, bits 0 through 3 and bit 7 will be set by
1
the appropriate command, however, there will be no other
effect.
Refer to the explanation of hexadecimal values under the
2
Range of Values label description at the beginning of this
appendix.
Chapter 3, "Configuration and Operation;" refer to the indicated
''AT'' command in Appendix A, "AT Command Set."
DEFINITY Communications System
7400B Plus Data Module
User´s Guide