Schlüsselwort: 即時(shí)(shí)通訊_______________，企業(yè)(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)(fā)___________________，金笛短信