多项选择题
A.E1 B.T1 C.STM-1 D.FE
A.信令处理板,即SPB2(SignalingProcessingBoard2) B.双速率变换板,即DRTB2(DualRateTranscoderBoard2) C.Gb接口处理板,即GIPB2(GbInterfaceProcessingBoard2) D.LAPD协议处理板,即LAPD2
A.Abis接口处理板,即BIPB2(AbisInterfaceProcessingBoard2) B.BSCIP接口板,即BIPI(BSCIPInterfaceboarD. C.LAPD处理板,即LAPD2 D.双速率变换板,即DRTB2(DualRateTranscoderBoard2)
A.控制框BCTC B.资源框BGSN C.分组交换框BPSN D.基带框BABN
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