| 术语 | hypothetical reference connection |
| 释义 | hypothetical reference connection 假设参考连接模型 An imaginary international connection specified by the CCITT to enable admini- strations to study the possible effects on overall transmission quality of changes in the planning parameters of their national networks. Such a model can also be used to test national planning rules against any performance criteria recommended by the CCITT for national systems. Various types of reference connection are specified according to length and the kind of service provided. 由CCITT提出的一种假想的国际性连接模型,用于研究在国家网络规划的参数中对总传输 质量改变可能产生的影响。也可以用这样的一种方式,对照由CCITT推荐的国家级性能准则, 检验国家制定的规则,按照连接长度和所提供的业务种类来规定各种类型的参考连接模型。 |
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