The Study Of Terminal Unit In Computer Network Telephone Systems

Telephone Communication is adopted as the main ways of communication at home and abroad presently, which plays a very important role in the modern information society. With the improvement of the people's life and the development of the socialist market economy, people's demand about telephone becomes progressively. Every field has its own special computer network, however they still use the switching network of programming control which is provided by the post telephone and telegraph system. The cost of the telephone is a large part in the spending of every department. Instructing the switching network to realize the telephone communication needs much of equipment charges, lines charges, protection charges , project charges and time.With the popularity of the computer, the computer network has become the absolutely necessarily office tool. Adopting the existing network resources to instruct the telephone communication system is a new way for telephone communication. This telephone communication system can use the computer network to transmit and switch the data stream for the telephone subscriber in a high speed. In this paper the telephone termination of the telephone communication system which adopts the technic of the computer,electronic and communication is designed. The hardware and software are designed after designing the system's organization in the article. The measures of resisting interference are taken in both hardware and software, and the transmission format of the system signaling is provided. The experimental research is carried out.The system is using the existing the network resources to obtain the prominent economic benefit through organizing the telephone communication without putting on the lines and purchasing the telecommunication network equipments, which is saved much costs such as equipment charges, lines charges , and project charges. The system without putting on the lines is convenient for realizing the telephone communication, increasing the telephone users, and shorting the time limited for the project and improving the efficient for the network resources. It can receive the best social efficient.. This system has a future prospect and using value in the area of Education, Science, Technology, Electric power, Bank, Police and etc.