Data Format - US Robotics COURIER User Manual

COURIER HIGH SPEED MODEMS
4. Your software does not support a fixed rate:
&BO Factory setting. The serial port rate switches to
match the connection rate of each call. This does
not affect error control or flow control. You will
not, however, gain the throughput efficiency pos-
sible with a serial port rate fixed higher than the
link rate. In addition, at the factory setting for data
compression, &Kl, the modem disables compres-
sion when the link rate is set to &BO.
5. Your maximum computer rate is 9600 bps:
S34=3 This disables higher-speed V.32
bis modulation.
The modem operates as a V.32 modem, with a
maximum serial port and link rate of 9600 bps.
(Does not apply to HST modems.)
&Hl Hardware flow control (CTS), or &H2 for software
flow control.
&Bl Fixed serial port rate of 9600 bps, recommended for
HST modems.
&M4 Error control factory setting required, or &MS.
6. You are calling a non-MNP modem:
S27=16 Disable MNP handshaking. A non-MNP modem
may misinterpret the MNP link request and
prevent a successful connection. This does not
apply for remote V.42 modems with error control
enabled.
7. You are transferring compressed files:
&K3
DATA FORMAT
This disables MNP compression, which does not
work successfully with files that are already
compressed. If V.42 bis compression is negotiated,
you will gain optimal throughput.
The Courier and the remote modem must use the same ten-bit
data format. One Start bit is universal and not programmable.
The following table lists the allowable word lengths, parity and
Stop bits.
3-4 Quick Start
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