The methods used in local network planning for the public telecommunications network in China are discussed. Network modeling, computer simulation, and planning software used in the planning process are described. A computer-aided planning tool for local telephone networks (CAPTLN), composed of three software modules that provide traffic forecasting, network optimization, and network economic analysis for the local network of the public switched telephone network (PSTN), is also discussed. Other tools are similarly used for all other parts of the PSTN network, such as international access, toll switching and trunking, signaling and synchronization.
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