Ericsson HM410dp Podręcznik Użytkownika Pobierz pdf (Strona 75)

Glossary

1553-ZAT 759 94 Uen A – October 2004

71

VPI and VCI

A VPI (Virtual Path Identifier) is an 8-bit field

while VCI (Virtual Channel Identifier) is a 16-

bit field in the ATM cell header. A VPI

identifies a link formed by a virtual path and a

VCI identifies a channel w ithin a virtual path.

In this way, the cells belonging to the same

connection can be distinguished. A unique

and separate VPI/VCI identifier is assigned in

advance to indicate which type of cells follow.

WAN – Wide Area Network

Any network spread over a large

geographical area, such as a country or

continent. With respect to the HM410dp,

WAN refers to the Internet.

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