Palavra chave: 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)(huì)議_________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________________，金笛短信