In recent years, with the development of technology, VoIP and gradually replace the traditional long-distance business, a corresponding demand for VoIP business monitoring is applied, the more devices are often through the routers, firewalls, such as, but to meet the demand of OC192 line speed of equipment price is very high, often for the entire network to conduct a comprehensive monitoring of inputs is very large, so the use of special algorithms and devices to carry on the analysis of the network data and lower equipment prices for VoIP in the entire network monitoring is a feasible solution, based on the solution actual problem and puts forward a new algorithm and structure, for the current network measurement, network billing can be as a reference method,
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