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