キーワード: 即時(shí)(shí)通訊____________________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)通___，視頻會(huì)議________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信