USRobotics V.34 - Manual (Page 116)

COURIER HIGH SPEED MODEMS
B-22 Summaries and Tables
Register Default Function
7 128 Unusual software incompati-
bility. Some software may not
accept 7200, 12000, 14400,
16800, 19200 and 21600 bps
result codes. This setting
disables the codes and displays
the 9600 code instead. The
call's actual rate can be viewed
on the ATI6 screen.
Error control handshaking options: select the
total values of bits 4 and 5.
Bit 4 Bit 5 Result
0 0 Complete handshaking
sequence: V.42 Detection,
LAPM error control, MNP
16 0 Disable MNP
0 32 Disable V.42 Detection and
LAPM
16 32 Disable Detection phase, if you
know that the remote modem
does LAPM, but not the
Detection phase.
S28 8 Sets the duration, in tenths of a second, of
the extra 3000/600 Hz answer tones sent
during V.32 handshaking. This gives V.32
modems additional time to connect in V.32
mode before timing out.
If there is difficulty answering older,
manually operated V.32 modems, for
example, modems that require a button to
be pushed in order to dial, try lengthening
the duration of the extra tones.