数字交换机话务处理能力的分析

ANALYSIS OF TRAFFIC-HANDLING CAPACITY OF DIGITAL SWITCHING SYSTEMS

程控数字交换机的话务处理能力,在话路系统表征为话务负荷容量;在控制系统表征为呼叫处理能力。本文分析在TDM电路交换条件下,数字交换机话务量分布的新特点,导出话路系统与信令系统话务负荷容量的分析方法。然后,在定义呼叫处理能力的测度方法的基础上,导出BHCA的一般算法。并通过建立呼叫处理能力的线性模型,给出了系统实际呼叫处理能力的计算方法。最终阐明了数字交换机呼叫处理能力、话务负荷容量以及系统用户终端纳入量之间的数学关系。

Traffic-handling capcaity of digital switching systems can be manifested as traffic capacity(TC) or call-handling capacity(CHC) according to the speech-path system or the control system respectively. In this paper,a new features of traffic distribution in digital switching systems under TDM virtual circuit switching are ana-lyzed and a method for calculating TC in speech-path and signalling system are derived. Than,on the basis ofdefine the measuring method and developing linear model of CHC,a general algorithms for BHCA and realCHC are created. At last,mathematic relations among CHC,TC and the capacity of subscriber terminals are ex-pounded.