Palavra chave: 即時(shí)通訊_____________，企業(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)_____________________，金笛短信