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LOSSARY
LOSSARY
LOSSARY
LOSSARY
44
ITU-T
An international organization that defines
standards for telegraphic and telephone
equipment. For example, the Bell 212A
standard for 1200 bps communication in
North America is observed internationally
as ITU-T V.22. For 2400 bps
communication, most U.S. manufacturers
observe V.22bis.
LAPM
Link Access Procedure for Modems is an
error-control protocol defined in ITU-T
Recommendation V.42. Like the MNP
protocols, LAPM uses cyclic redundancy
checking (CRC) and retransmission of
corrupted data (ARQ) to ensure data
reliability.
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.
