AT&T 7400B Plus User Manual page 167

DEFINITY Communications System
7400B Plus Data Module
User´s Guide
Register:
Description:
Range of
Values:
Storable:
Comments:
See Also:
Register:
S16
This S-register stores test function status in a bit-mapped format
as follows:
bit 0 — local digital loop test; 0 = test disabled, 1 = test in
progress (default = 0, see the &T1 and &T2 commands)
bit 1 — not used (always set to 0)
bit 2 — local data loop test; 0 = disabled, 1 = test in progress
(default = 0, see &T3 command)
bit 3 — status bit for remote digital loop initiated by remote
system; 0 = off, 1 = in progress (default = 0, see &T4 and &T5
commands)
bit 4 — remote digital loop; 0 = disabled, 1 = in progress
(default = 0, see &T6 command)
bit 5 — remote digital loop with self-test; 0 = disabled, 1 = in
progress (default = 0, see &T7 command)
bit 6 — local digital loop with self-test; 0 = disabled, 1 = in
progress (default = 0, see &T8 command)
bit 7 — not used (always set to 0)
Value may be 00 to FF hexadecimal; factory-default settings
produce a value of 00 (see comment 1).
no
Only one of the tests may be in progress at any time. The
1
T0 command terminates any locally initiated test in
progress and sets S-register 16 to 00.
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."
S17 — not used
APPENDIX C: S-REGISTERS
Page C-11