A.Umf BSAck Order B.Umf Pilot Measurement Request Order C.Umf Handoff Completion Msg D.Umf Pilot Strength MeasurementMsg
A.開機注冊指示 B.非漫游注冊指示 C.登記周期 D.登記距離
A.物理層 B.MAC層 C.會話層 D.連接層