短語詞組短語virtual voice group call 虛擬組呼Voice Group Call Service 呼叫服務;話音組呼叫業(yè)務;話路群呼叫業(yè)務;話音群呼業(yè)務Dynamic Voice Group Call Service 動態(tài)語音組呼業(yè)務vgcs voice group call service 話路群呼叫業(yè)務 返回 voice group call