User`s manual

U.S. Robotics I-modem Command Reference
Appendix A: Alphabetic Command Summary • Page A-17
&I4 Hewlett Packard-Terminal mode. Applies only to I-modems attached to ter-
minals in an HP system that uses the ENQ/ACK protocol
. Use in ARQ
mode only.
&I5 This setting is designed to enable ßow control on the phone link when the
connection is not under error control. For this to work, the remote device
must have &I5 capability.
&Kn Enable or disable data compression.
&K0 Disable data compression.
&K1 Use auto-enable/disable. The I-modem enables compression if the serial
port rate is Þxed (&B1) and disables compression if the serial port rate fol-
lows the connection rate (&B0) because compression offers no throughput
advantage when the serial port and connection rates are equal; in fact, com-
pression may degrade throughput.
&K2 Always enable data compression. Use this setting to keep the I-modem
from disabling compression.