USRobotics V.34 User Manual
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COURIER HIGH SPEED MODEMS
Glossary J-15
V.34
An ITU-T standard that allows data rates as high as 28.8K 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 com-
pression scheme for use with V.42 error control. V.42
bis is only
supported with LAPM and HST.
V.8
ITU-T recommendation that defines procedures for starting and
ending sessions of data transmission.
V.Fast Class (V.FC)
Proprietary modulation scheme developed by Rockwell
International for data communication speeds up to 28.8K bps.
Word Length
The number of bits in a data character without parity, start or
stop bits.
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. In most systems
typing
including the Courier, understand
interpret the pressing of any key after