A.HLR B.MSC C.BSC D.BTS
A.PACKET MOBILE TBF STATUS B.PACKET POWER CONTROL/TIMING ADVANCE C.PACKET SYSTEM INFORMATION TYPE 2 D.PACKET CHANNEL REQUEST
A.無源器件安裝時應用安裝件進行固定,并且垂直、牢固 B.無源器件嚴禁接觸液體,并防止端口進入灰塵 C.無源器件的設備控制端口應嚴禁匹配負載 D.無源器件應有清晰明確的標簽