Since there are no implementation methods in SIP standards (RFC3261), a finite state machine of client's transaction and its dataflow diagram are designed with rollback pointers algorithm.

因为SIP协议标准本身（RFC3261）并没有给出实现方法，本文通过采用指数后退算法设计SIP客户事务的有限状态机及其流程图。

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Carry out relevant training to ensure the correct implementation of the testing methods, and monitor the testing process to ensure conformance to ISO and Secco standards.

开展培训确保采用正确的测试方式，监督测试过程确保符合ISO和赛科标准。

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Then introduced the small and medium-sized logistics enterprises in the Union, the logistics information system standards and the implementation of the amendment process, methods.

随后介绍了在中小物流企业联盟中，物流信息标准体系的实施及修订。

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