Jiaozuo City Softswitch-Based Network Of Local Test The Next Generation Network Design

The next generation network (NGN) includes construction of the network are taking place in a variety of changes in the way. Soft-Switch is the national telecommunications sector of hot and telecommunications networks will also be the development trend of China's telecom operators have also launched a soft-exchange network building. The design includes four parts, first of all the local networks provide an overview of the status quo. The second part of the basic principles of NGN, as well as domestic and foreign concept for the development of note. The third part is the design of the main contents of the study, including the purpose of design, business forecast and demand analysis, network design, network design parameters specific terms. The fourth part of network testing and performance analysis, introduced a specific test tools and testing methods, and to study the IP network transmission latency, packet loss of voice quality. I am in this mainly involved in the design of the following work, the design of network topology, soft switching platform BHCA demand, the media gateway in the relay in a different way when the compression rate of input and output relay IP packet rate (or bandwidth ) Correspondence between the analysis and calculations, access media gateways in a different way when the coding rate of input and output relay IP packet rate (or bandwidth) of the relationship, broadband multimedia access bandwidth required for the analysis and calculation, Signaling Gateway in the different signaling link rate and output IP packet rate (or bandwidth) and calculation of the relationship, IP network transmission of the packet loss rate of voice quality analysis and the impact of different network conditions voice signal transmission quality MOS Grading of the test contents. This paper through a lot of analysis, the project for the selection of equipment and computing capacity to provide detailed information and the scientific basis for the successful completion of this project has laid a solid foundation.