A2-12 429850
Trend AuroraPlus User Guide
U
U interface The demarcation point between the customer premises
equipment and the ISDN line from the exchange.
V
VN1 VN is the national ISDN protocol for France and it is
also used in private networks utilising equipment of
French origin.
Video text Usually refers to an interactive communication
application in which a user can communicate with a
video terminal.
X
X.25 An internationally recognized standard for
transmitting packet switched data.
App02.P65 01/05/01, 09:2012
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