The paper mainly does the research on the Missing Call Notice (MCN) service, it is a kind of the Message value-added service, which is generated for the sake of solving the problem how mobile users can get the dismissed messages when the mobile phone was shutdown or out of service.Firstly, the paper studies the all designed scheme of the MCN service, which main contents are the realization theory based on Missing Call Notice (MCN) service of call forwarding, the key problem of technique, all architecture of system, basic operation function, and so on.Secondly, on the base of all designed scheme of the MCN service, the paper shows the design of software and hardware in the MCN, the programmer of each subsystem, and the testing of every subsystem is done. The correctness of procedure is validated.Thirdly, the paper expatiates the limitations of the MCN system during the actual operation situation, presents the corresponding optimized strategies of the system. This includes two aspects: the cluster scheduling algorithm of the service processing nodes is used to the optimization of MCN, which is aiming at solving the problem between the unbalance load of each services processing node and the containing disaster of unable carrying out services processing node; Aiming at the problem of the low processing ability of the single service processing node, this paper realizes the system optimization strategy which adds memory database on the system service processing node to reduce the times of disk IO.Finally, the test is done on the improved MCN, and the validity of this software is also validated. |