With the growing popularity of mobile communication

users require service quality and performance increasingly.Voice service which as the users basic business is the most important aspect of the evaluation of user-perceived quality.How to objective assessment of voice quality

find the causes of the problems efficiently in the existing voice services network

position mobile communication network maintenance

now facing new challenges.Content of this study is to analyze the existing network of voice media stream

to assess the quality of the user’s call

the cause of the fault and the point positioning voice degradation

and media flow analysis can be combined with the needs of practical work

to provide voice quality core network

wireless network support services

research network transformation to solve the new program namely.