音声 おんせい応答 おうとうユニットでしょう
onseiōtōyunittodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 音声応答ユニット

1. Voice response unit, likely.; Probably a voice response unit.

Polite
Presumptive
Conjecture
Computing