B.不推荐仅从一钠设备注入时间信号
C.优先考虑从网络的非同站点的两端设备注入。时间服务器的输出信号分主备优先级。其次考虑从网络的同站虑的不同设备注入。时间服务器的输出信号分主备优先级。
A.No, only possible for the TCH
B.Yes, but a BTS technician must be on site to assist with the OMT.
C.Yes D.Yes, but the condition is that there are no traffic in the cell.
D.Yes, but the condition is that there are no half-rate traffic in the cell
A.1001P100
B.1010P010
C.1101P010
D.1011P100O
A.成对主备用冗余工作方式的通信设备,主备用设备的供电应分别从不同的开关电源系统引接;
B.单台设备,原则上接入不同PDF不同开关电源系统
C.口字形拓扑‖的对角线设备必须分接不同开关电源系统;
D.单台设备,原则上接入同一PDF同一开关电源系统