Schlüsselwort: 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_____________________，視頻會議_______________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信