3Com Courier Reference page 148

A-6 A A: S-R
PPENDIX EGISTERS
Register Default Function
0
1
2
3
4
5
6
7
S14 1 Bit-mapped register ( See the beginning of this appendix for
information about setting bit-mapped registers).
Bit
0
S15 0 Bit-mapped register. ( See the beginning of this appendix for
information about setting bit-mapped registers).
Bit
0
1
2
3
4
1 Reset when DTR drops.
2 Reverse normal Auto Answer operation:
On incoming RING, enter Originate
Mode and look for an answer tone.
4 Disable 250 ms pause before result code
display.
8 On DTR signal, autodial the number
stored in NVRAM at position 0 (external
Courier V.Everything modem only).
16 At power-on/reset, autodial number
stored in NVRAM at position 0.
32 Disable HST (used for testing V.32terbo
in Dual Standard Courier V.Everything
modems).
64 Disable MNP Level 3 (used for testing
Level 2).
128 Hardware reset (works like powering off
and then on).
Value Result
1 Disconnect on escape code.
Value Result
1 Disable the Courier V.Everything
modem's extra high-frequency
equalisation if it causes problems on
shorter-link calls for HST modulation
only.
2 Disable online fallback.
4 Disable 450 bps back channel* HST only.
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).
16 Disable MNP Level 4; retransmitting the
larger Level 4 data blocks may be a
problem if you expect a great number of
errors during a call.