通信 つうしん制御 せいぎょ機構 きこうじゃなかったです
tsūshinseigyo kikōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 通信制御機構

1. Was not a communication control mechanism.

Past/Perfective
Negative
Polite
Casual Register
Computing