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)議____________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________________，金笛短信