キーワード: 即時(shí)通訊____________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________________，龍笛即時(shí)通_____________________，視頻會議____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________________________，金笛短信