キーワード: 即時(shí)(shí)通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通___________，龍笛即時(shí)(shí)通_______________，視頻會(huì)(huì)議_____________，集成開(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________，金笛短信