キーワード: 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