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随着社会的进步和通信事业的发展,现代电信网服务已遍布世界各个角落,深刻影响着每个人的日常生活[1],所以人们对电信网的服务质量要求越来越高。为了满足现代电信网用户灵活的组网要求,程控交换机提供多种号码变换技术供用户选择,如号码准备、主叫号码分析、号首处理、中继承载等。由于不同号码变换方法原理不同,可能会对电信网产生不同程度的影响,因此选择正确的号码变换方法对电信网的正常稳定运行有重要意义[2]。现简要介绍程控交换机不同号码变换实现方法的原理,分析、比较其优缺点及使用原则。并以目前电信网常用的CC08型程控交换机为平台,对主要的号码变换方法进行应用举例,为用户在实际工作中快速、准确的选择合适的号码变换方法提供借鉴。
With the progress of society and the development of communication, modern telecommunication network services have spread all over the world and have a profound impact on everyone’s daily life [1]. Therefore, the service quality of telecommunication networks is increasingly demanding. In order to meet the requirements of modern telecom network users flexible networking, program-controlled switches provide a variety of number conversion technology for the user to choose from, such as number preparation, caller ID analysis, number first processing, relay bearer and so on. Because different numbers change the principle of different ways, may have different degrees of influence on the telecommunication network, so choosing the correct number to change the method is important to the normal and stable operation of the telecommunication network [2]. Briefly introduce the program-controlled switches, different numbers of the realization of the principle of change, analysis, comparison of their advantages and disadvantages and the use of principles. At the same time, CC08 PBX, which is commonly used in telecom network, is used as a platform to provide examples of the main methods for number conversion. It provides a reference for users to select the appropriate number conversion method quickly and accurately in practical work.