Lucent Technologies AT&T 7400B User Manual
Page 79
APPENDIX B: S-REGISTERS
DEFINITY Communications System
7400B Data Module
Page B-14
User’s Guide
Register:
S23
Description:
This S-register is used to store the status of bit-mapped options as
follows:
bit 0 — allow remote loop request from remote system; 0 = disabled,
command)
bits 1, 2, and 3 — local communications speed (see comment 1)
0 = 300 bps
1 = not used
2 = 1200 bps
3 = 2400 bps (factory-set default)
4 = 4800 bps
5 = 9600 bps
6 = 19200 bps
7 = not used
bits 4 and 5 — local parity setting; 0 = even, 1 = space, 2 = odd, and
3 = mark/none (default = 0)
bit 6 and 7 — not used (see comment 2)
Range of
Values:
Storable:
Comments:
Value may be 00 to FF hexadecimal; factory-default settings produce a
value of 07 hexadecimal (see comment 3).
yes
1.
Hayes compatible modems use only bits 0, 1 and 2 for speeds up
to 2400 bps. The 7400B Data Module uses bit 3 to support
speeds above 2400 bps.
2 .
Bits 6 and 7 are set by the appropriate command, but there will
be no other effect.
3 .
Refer to the explanation of hexadecimal values under the Range
of Values label description at the beginning of this appendix.
See Also:
Chapter 4, “Operation and Configuration”; refer to the indicated AT
command in Appendix A, “AT Command Set.”
Register:
S24
— not used