Schlüsselwort: 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