A.PSMM,HCM,GHDM B.PSMM,GHDM,HCM C.GHDM,PSMM,HCM D.GHDM,HCM,PSMM
A.前向業(yè)務(wù) B.反向業(yè)務(wù) C.反向接入 D.尋呼