Why are base stations sometimes cascade connected? （） A:To save antennas B:To share PCM links C:To share RBS equipment D:To simplify the installation E:To be able to reuse frequencies

Why are base stations sometimes cascade connected? （）
A:To save antennas
B:To share PCM links
C:To share RBS equipment
D:To simplify the installation
E:To be able to reuse frequencies

出自：中国移动网络维护生产岗位

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