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