高度 こうど通信 つうしんシステム相互 そうご接続 せつぞく
kōdotsūshinshisutemu sō gosetsuzokuno

Noun
Da Copula

Attributive form: modifies a following noun of 高度通信システム相互接続

1. High-level communication system interconnection; High-level intercommunication system

Attributive
Computing