キーワード: 即時(shí)(shí)通訊_______，企業(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)_________________，金笛短信