高速 こうそく伝送 でんそうではありませんでした
kōsokudensōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 高速伝送

1. Was not high-speed transmission.; It was not a high-speed transfer.

Past/Perfective
Negative
Polite
Formal Register
Computing