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