User`s manual

U.S. Robotics I-modem Command Reference
Glossary • Page G-31
online fallback
A feature that allows high-speed error-control modems to monitor line quality and fall
back to the next lower speed if line quality degrades. The modems fall forward as line
quality improves.
Online mode
When the I-modem is in Online mode, it is connected over telephone lines with another
device.
originate mode
A state in which the modem transmits at the predeÞned low frequency of the communica-
tions channel and receives at the high frequency. The transmit/receive frequencies are the
reverse of the called modem which is in Answer mode
.