The last stage is frequency planning evaluation.It includes MRR voice quality assessment, analysis of statistical indicators of STS, voice quality assessment of DT, etc.The desired effect is acquired.

• 最后第四部分频率规划效果评估,对MRR通话质量评估,STS统计指标分析,测试话音质量评估等进行了评估,取得了预期的效果。