キーワード: 即時(shí)(shí)通訊____________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____________________，龍笛即時(shí)(shí)通__________，視頻會(huì)(huì)議______________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________，金笛短信