受付 うけつけ不可 ふか信号 しんごうなら
kikōketsukefukashingōnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 着呼受付不可信号

1. If/when wearing a call receiver is not allowed.; If the call receiver is not wearable.

Nara Conditional
Computing