逆方向通信路

ぎゃくほうこうつうしんろ

noun

•

backward channel(computer term)

逆	inverted, reverse, opposite, wicked
方	direction, person, alternative
向	yonder, facing, beyond, confront, defy, tend toward, approach
通	traffic, pass through, avenue, commute, counter for letters, notes, documents, etc.
信	faith, truth, fidelity, trust
路	path, route, road, distance