![background image](http://html1.mh-extra.com/html/3com/005687-03/005687-03_manual_440884126.webp)
G
LOSSARY
122
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.42 bis
An extension of
ITU-T
V.42 that defines a
specific data compression scheme for use
during V.42 connections.
Xmodem
The first of a family of
error control
software
protocols
used to transfer files between
modems. These protocols are in the public
domain and are available from many bulletin
board services.
XON/XOFF
Standard
ASCII
control
characters
used to
tell an intelligent device to stop/resume
transmitting data.
Ymodem
An error-checking
protocol
that can send
several files of data at a time in 1024-
byte
(1K) blocks. This protocol can use either
checksums or CRC for error checking.