(This paper combines the development trend of new network technology and the current situation of enterprise business development, fully considers the existing traditional voice telecom services of enterprises, and conducts a comprehensive analysis of user business needs. Based on Ericsson's EMM system, this paper designs a business experiment and implementation scheme, and conducts a detailed test of relevant new services. The EMM system for this test is version 2.1, which is built on the IPMM version 2.0.)
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