US Robotics 3Com Manuale Utente Scaricare il pdf (Pagina 52)

GLOSSARY

7-10

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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US Robotics 3Com Manuale Utente Pagina 52