36
SPEEDSTER 288 INTERNAL FAX/MODEM
Register
Default
Function
S27
0 (zero)
Bit-mapped register setup. To set the register,
see instructions for S13.
Bit
Value
Result
0 (zero)
1
only originates V.21 calls.
(Default Bell 103.)
1
2
Enables unencoded (non-
trellis coded) modulation in
V.32 mode; rarely used part
of ITU-TSS Recommen-
dation V.32.
2
4
Disables V.32 modulation.
3
8
Disables 2100-Hz answer
tone to allow two V.42
modems to connect more
quickly.
4
16
Enables V.23 fallback mode.
5
32
Disables V.32 bis mode.
6
64
Reserved.
7
128
Software compatibility
mode. This setting disables
the codes and displays the
9600 code instead. The
actual rate of the call can be
viewed on the AT16 screen.
Used for unusual software
incompatibilities. Some
software may not accept
7200, 12,000, and
14,400 bps or greater result
codes.
