系统容量 ：在保证通信质量的前提下，功率控制算法能够支持的用户数量和数据传输速率。The voice part can both be sent as Voice over Net Protocol (VoIP) or over a separate fallback provider committed to voice-only, i.e. CDMA2000 one x provider. EVDO won't deliver integrated voice and only concentrates on providing
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