Interphase-tech RAS Communications Controller 5536 Manuale Utente Pagina 237

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Vedere la pagina 236
Glossary
5536 PRI RAS Communications Controller Users Guide 217
X.21 bis (Packet data networking) International recommendation
that defines the most popular physical interface for X.25. Equivalent to
RS-232 and V.24.
X.21 (bis) link Commonly used in European countries, this is a pay
as you go link. When a signal is raised, the network automatically
establishes a link to the remote unit.
X.25 Packet switching protocol that lets computers communicate
via wide area packet switched data networks
XID See exchange identification.
Vedere la pagina 236

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