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Jumper
A small plastic plug that fits over a pair of pins. When the plug straddles two pins it makes an
electrical connection. The computer makes decisions based on whether the connection is made
or not. A group of jumper pins is called a jumper block.
LAPM
Link Access Procedure for Modems. The error correction protocol preferred by the V.42bis
modem protocol. BTLZ connections require LAPM error correction.
Local Echo
A modem feature that enables the modem to send copies of keyboard commands and
transmitted data to the screen.
Local Modem
Your modem.
MNP
Microcom Networking Protocol. Protocols providing error correction (MNP 2-4, MNP 10) and
2:1 data compression (MNP 5).
Modem/Fax Modem
A modem (MODulator/DEModulator) is a device that can take computer data (a series of "1"s
and "0"s) and convert it to tones that can be transmitted/received through a communications
channel such as radio or telephone lines. Another modem at the other end can decode the
tones back into the original data. Fax modems are modems that can also communicate with
fax machines in addition to their data communications.
NVRAM
Nonvolatile random access memory. User-programmable memory whose data is retained if the
device is turned off.
Negotiation
The process where your modem and the remote modem determine what type of connection to
make.
Synonyms:
Detection, Detection Phase.
Normal Connection
Same as a Direct connection, but with the addition of flow control, which allows the computer
and connection rates to be different. A Normal connection does not support error correction or
data compression.
Online State
Operating mode where your modem can communicate with the remote computer.
See also
Command State.
Plug and Play
Plug and Play automatically manages the communication between the system and the new
device. Windows™ 95 takes over all necessary work from loading the correct drivers to the
most optimal connection between hardware and software.
