US Robotics 005689-03 Manual page 29

MNP MNP
Microcom Networking Protocol, an error-
control protocol developed by Microcom,
Inc., and now in the public domain. There
are several different MNP protocols, but the
most commonly used protocol ensures
error-free transmission through error
detection (CRC) and retransmission of
errored frames.
Modem Modem
A device that transmits/receives computer
data through a communications channel
such as radio or telephone lines. It also
changes signals received from the phone line
back into digital signals before passing them
to the receiving computer.
Nonvolatile Memory (NVRAM) Nonvolatile Memory (NVRAM)
User-programmable random access memory
whose data is retained when power is turned
30
off. On the Sportster, it includes four stored
phone numbers and the modem settings.
OFF/ON Hook OFF/ON Hook
Modem operations that are the equivalent of
manually lifting a phone receiver (taking it
off-hook) and replacing it (going on-hook).
Online Fallback/Fall Forward Online Fallback/Fall Forward
A feature that allows high-speed, error-
control modems to monitor line quality and
fall back to the next lower speed in a
defined range if line quality diminishes; as
line conditions improve, the modems switch
up to the next higher speed.
Originate Mode Originate Mode
The mode used by your modem when
initiating an outgoing call to a destination
modem. The transmit/receive frequencies
are the reverse of the called modem, which
is in Answer mode.