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