A-6
A
PPENDIX
A: S-R
EGISTERS
S13 0 Bit-mapped register. See the beginning of this appendix for
information about setting bit-mapped registers.
Bit Value Result
0 1 Reset when DTR drops.
1 2 Reverse normal Auto Answer
operation: On incoming RING, enter
Originate Mode and look for an
answer tone.
2 4 Disable 250 ms pause before result
code display.
3 8 On DTR signal, autodial the number
stored in NVRAM at position 0.
4 16 At power-on/reset, autodial number
stored in NVRAM at position 0.
5 32 Disable HST (used for testing
V.32terbo in Business Modems).
6 64 Disable MNP Level 3 (used for
testing Level 2).
7 128 Hardware reset (works like
powering off and then on).
S14 1 Bit-mapped register (See the beginning of this appendix for
information about setting bit-mapped registers).
Bit Value Result
0 1 Disconnect on escape code.
S15 0 Bit-mapped register. (See the beginning of this appendix for
information about setting bit-mapped registers).
Bit Value Result
0 1 Disable the Business Modem's extra
high-frequency equalization if it
causes problems on shorter-link
calls for HST modulation only.
1 2 Disable online fallback.
2 4 Disable 450 bps back channel* HST
only.
3 8 Reset non-ARQ mode Transmit
buffer from 1.5K bytes to 128.* (for
the convenience of BBS operators
taking calls from remote users of
slower modems).
Register Default Function
