Robotics Sportster Flash x2 Guide de l'utilisateur télécharger pdf (Page 46)

42 Sportster Flash x2 - User’s Guide

V.42

A 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.

Ymodem G

Similar to Ymodem, except it includes no error checking, which makes

it faster.

Zmodem

Similar to Xmodem and Ymodem, except it includes batch transfer, the

ability to recover from a partially complete transfer, an autostart

feature, and improved efficiency.

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Robotics Sportster Flash x2 Guide de l'utilisateur Page 46