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