VOIP has become a way of resource optimization, in does not affect the meaning of the original author and function, but also the development of new network application content, improving the efficiency of the campus network, reduce the operation cost of the school, this paper introduces the solution to solve: education network phone within the network can realize the free exchange; Through the education network GK to centralized management for Internet phone within the campus network; Infomation IPPhone can by telecom landing GW and PSTN fixed-line and mobile communication; Figure in the campus network N before the realization of the network, there has been a traditional PSTN and VOIP solutions, after GK adjacent, new line after the network can be achieved with the new campus VOIP network interoperability,
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