Research And Design Of Broadband Integrated Data Optical Synchronous Network Voice Communication System

The Wideband Integrated Data Optical Synchronous Network(WIDOSNet) which is a fire-new integrated services industrial control network is based on SDH network technology,optical fiber communication,SOPC technology,and it uses the concept of on-chip data selection to complete the traditional functions of exchange,and a new set of dynamic data flow adjustment concept.It used high-speed programmable system-on-chip multiprocessor consisting of information processing system allowing the system to have sufficient information processing capability. Moreover,it also has the flexibility of variable data bandwidth.The WIDOSNet posed mainly by the part of network concentrator and the part of the user nodes.The completion of the main topics is the research and design for the basic features of the voice communications system.Combining the characterristics of the network,the voice communications system structure was put forward.The WIDOSNet voice communications system can be divided into the node analog voice communications baby boards which inserted in nodes motherboard and user terminals for the Subscriber Line Interface Circuit from the hardware structure. Used SOPC technology,The node analog voice communications baby boards embedded a 32 processor NIOSâ…¡in the FPGA,based on this,communications agreement can be achieved by use of IP Core technology and embedded software Quartus II programming.To the subscriber'S line interface circuit,chooses PBL38710 takes the core chip,carries on VHDL to CPLD the programming.The paper analyzes the model,protocol and the characteristics of other network in light of the network'S needs.the communication protocol applicated to this network structure and the structure of the voice communication system was designed,and a hadware circuit application of this agreement,verify the feasibility of the network structure and the voice communication protocol was produced.The article also emphasises on the difficults and solutions in the course of the design process,and some module doesn't has one design method,the article also gives each idea's advantages and disadvantages and points the ultimately adopted one.