The Design And Implement Of IMS Short Message Center

As the consumers’demand for telecommunications services continuously improve, the bottleneck of traditional telecommunications services will become increasingly prominent. Operators had to build a strong business support environment, providing diverse, personalized integration of telecommunications services to solve this problem, and Next Generation Network (NGN) solutions is a way to the problem.SIP is based communication protocol in IMS, as a traditional Internet communication protocol, it supports instant messaging, presence business well, but the short message and the other telecommunication business support badly, which hinders Softswitch network evolution to the IMS network.In this paper, I designed and implemented a Short Message Center (SMC) that converged Softswitch and IMS network, which supported the SMS smooth migration from the Softswitch to IMS. SMC played the role of application server in IMS architecture, which involves the third-party registration, IMS number and non-IMS address resolution, SIP protocol differences between Softswitch and IMS, and the other issues. The paper started from SMC’s position in IMS, then discussed the needs differences between Softswitch SMC and IMS SMC. Besides, proposed IMS SMC specific functional requirements, designed IMS SIP protocol adaptation methods, the third-party registration processing logic, ENUM address resolution processing logic, integration routing rules, so as to achieve the converged SMC equipment. Last, I tested the converged SMC.