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本文就呼叫建立的全过程及可能引发故障的异常情况进行了分析,并就各种故障的原因及解决方法进行了探讨,并提出了相应的解决方案。
This paper analyzes the whole process of call establishment and the possible anomalies that may lead to failure, and discusses the causes and solutions of various failures, and puts forward the corresponding solutions.