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COURIER HIGH SPEED MODEMS
-
'-
Register
Default
Function
S25
0
Reserved.
S26
1
Sets the duration, in 10-millisecond units,
of the delay between RTS and the modem's
,
...
CTS response in synchronous mode.
S27
0
Bit-mapped register. To set the register,
see the instructions for S13.
-
Bit Value Result
0
1
Enable CCITT V.21 modulation
,.-
at 300 bps for overseas calls. In
V.21 mode, the modem an-
swers both Bell 103 and V.21
-
calls, but only originates V.21
calls.
1
2
Enable unencoded (non-trellis-
-
coded) modulation in V.32
mode; this option is part of the
CCITT V.32 recommendation,
but is rarely used.
2
4
Disable V.32 modulation; used
for testing HST modulation in
Dual Standard modems.
3
8
Disable 2100 Hz answer tone to
allow two V.42 modems to
connect more quickly.
4
16 See below.
5
32 See below.
6
64 Reserved.
7
128 Unusual software incompati-
bility. Some software may not
accept 7200, 12000, 14400 and
16800 bps result codes. This
setting disables the codes and
displays the 9600 code instead.
The call's actual rate can be
viewed on the A TI6 screen.
continued on following page
Summaries and Tables
B-17
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