基站上报“RX通道增益异常”告警，使用showantpwr发现RRU的DetAntPwr和AntPwr异常小，可采用处理手段有（ ）
A、硬重启RRU
B、排查光口连接状态，光模块状态，尝试更换光模块
C、排查馈线连接，优先排查校准天线和其余馈线连接是否有误
D、更换RRU

A. A.铜轴电缆

B. B、双绞线

C. C、电话线

D. D、光纤

A. A、新建

B. B、修改

C. C、对比

D. D、删除

A. A、 S_serving< THRESH_2G_low 且 S_non-serving_LTE > THRESH_LTE_low

B. B、 S_serving< THRESH_2G_low 且 S_non-serving_LTE < THRESH_LTE_low 且 S_non-serving_LTE > S_serving + H_PRIO

C. C、 S_serving> THRESH_2G_low 且 S_non-serving_LTE > THRESH_LTE_low

D. D、 S_serving> THRESH_2G_low 且 S_non-serving_LTE < THRESH_LTE_low 且 S_non-serving_LTE > S_serving + H_PRIO

A. A、VoLTE

B. B、CSFB

C. C、SRVCC

D. D、双待机