noun
virtual path identifier; VPI
Technical term in ATM networking; a field in the cell header that identifies the virtual path.
ATMネットワークでは、仮想パス識別子がセルの経路選択に使われる。
In ATM networks, the virtual path identifier is used for cell routing.
Compound of 仮想 (virtual) + パス (path) + 識別子 (identifier), a direct translation of the English term.