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