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