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)議___________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________________，金笛短信