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