こう帯域 たいいき総合 そうごうディジタル通信 つうしん もうだったら
kōtai iki sōgōdijitarutsūshimmo udattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 広帯域総合ディジタル通信網

1. If it were a broad-band integrated digital network.; If it was a broad-band integrated digital network.

Tara Conditional
Computing