In data communications, the action performed by the calling party, or the operations necessary in making a call, or the effective use made of a connection between two stations.是什么意思_In data communications, the action performed by the calling party, or the operations necessary in making a call, or the effective use made of a connection between two stations.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句