Palavra chave: 即時(shí)(shí)(shí)通訊______________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通________________，龍笛即時(shí)(shí)(shí)通___________，視頻會(huì)(huì)(huì)議______________，集成開(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________________，手機(jī)(jī)(jī)端