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LOSSARY
LOSSARY
LOSSARY
LOSSARY
49
V.29
An ITU-T standard for facsimile
operations that specifies modulation at 9600
bps, with fallback to 7200 bps.
V.32
An ITU-T standard for modem
communications at 9600 bps and 4800 bps.
V.32 modems fall back to 4800 bps when
line quality is impaired.
V.32bis
An ITU-T standard that extends the V.32
connection range: 4800, 7200, 9600,
12,000, and 14,400 bps. V.32bis modems
fall back to the next lower speed when line
quality is impaired, fall back further as
necessary, and also fall forward (switch
back up) when line conditions improve.
See online fall back/fall forward.
V.34
An ITU-T standard that currently allows
data rates as high as 28,800 bps.
V.34+
An enhancement to V.34 that enables data
transfer rates as high as 33,600 bps.
V.42
An ITU-T standard for modem
communications that defines a two-stage
process of detection and negotiation for
LAPM error control.
V.42bis
An extension of ITU-T V.42 that defines a
specific data compression scheme for use
during V.42 connections.
