はん じゅう通信 つうしんじゃありませんでした
hannijūtsūshinjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 半二重通信

1. Was not a half-duplex communication.; Was not a semi-duplex communication.

Past/Perfective
Negative
Polite
Terminal Form
Computing