キーワード: 即時(shí)(shí)通訊_________________________，企業(yè)(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)(fā)_______________________，金笛短信