Schlüsselwort: 即時(shí)(shí)(shí)通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)(shí)通__________，視頻會(huì)(huì)議____，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信