Robotics Sportster Flash x2 Guía de usuario descargar pdf (Pagina 42)

Sportster MessagePlus38

V.32 bis

An ITU-T standard that extends the V.32 connection range: 4800,

7200, 9600, 12,000, and 14,400 bps. V.32 bis 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.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.

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Robotics Sportster Flash x2 Guía de usuario Pagina 42