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)議___________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信