Schlüsselwort: 即時(shí)(shí)通訊____________，企業(yè)(yè)(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)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________________，金笛短信