Lub tuam txhab kev sib txuas lus huab-raws li RingCentral tau ntxiv rau hauv cov npe ntawm "zombie" cov khoom lag luam muab tso ua ke los ntawm lub tuam txhab tshawb fawb kev ncaj ncees Tshiab Tsim. Lub tuam txhab tshawb fawb, uas siv tshuab kev kawm thiab ntuj ...