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__________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)______，金笛短信