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)(huì)議_____________________，集成開(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________，金笛短信