The invention discloses a method, a device and a
system for optimizing network access performance, which are used for improving network optimization efficiency and accurately and effectively optimizing the network. The method comprises the following steps of: generating a detailed call tracking
record according to the received call trigger message, wherein the detailed call tracking
record is used for recording detailed information of the whole call flow, and at least comprises a call
reason code; after the release of the current call, acquiring the detailed call tracking
record, and judging whether the current call is successfully accessed according to the
reason code therein; and counting the network access
failure rate based on the judgment result, evaluating the network access performance according to the access
failure rate, and selecting a corresponding reference optimization scheme for network optimization according to the
evaluation result. Therefore, the automatic network evaluation can be realized, the accurate and effective network optimization can be automatically carried out, and the
system maintenance cost is reduced. The invention also discloses a device and a
system for optimizing network access performance.