User`s guide

56K Professional Message Modem46
local echo
A modem feature that enables the modem to display keyboard
commands and transmitted data on the screen. See command
En
.
MNP
Microcom Networking Protocol is 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 one ensures
error-free transmission through error detection (
CRC
) and
retransmission of erred
frames
.
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 to
digital signals
before passing them to the receiving computer.
nonvolatile memory (NVRAM)
User-programmable random access memory whose data is retained
when power is turned off. On the Message modem, it includes four
stored phone numbers and the modem settings.
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 fall back/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
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
.