構内交換機

こうないこうかんき

noun

•

private branch exchange, PBX(computer term)

構	posture, build, pretend
内	inside, within, between, among, house, home
交	mingle, mixing, association, coming & going
換	interchange, period, change, convert, replace, renew
機	loom, mechanism, machine, airplane, opportunity, potency, efficacy, occasion