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)議______________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________，金笛短信