ATM网络中各种业务呼叫之间的相互阻塞作用

研究了CAC的使用方法，当网络流量比较大甚至接近满负荷时，简单地使用这些CAC会出现窄带业务与宽带业务呼叫之间的不平衡现象。文中首先对各业务的接入概率、宽带业务和窄带业务的呼叫之间相互阻塞的概率作了较详细的分析，采用了按呼叫接入的状态来使用CAC的新方法，从而实现公平接入的平衡机制。

Mutual blocking probabilities between various calls in ATM networks

This paper studied the using manner of CAC. When the network traffic is heavy and even near to the system capacity, directly and simply using the CAC, it will emerge the phenomenon of unbalance that the narrow band calls block the broad band calls accessing into the network. The paper analyzes the accessing probabilities of various services, the blocking probabilities between the wide band service calls and the narrow band service calls in multi-services networks under the traffic approaching to the system capacity. Upon these analyses, taking a new manner to use the CAC according to the states of the call accessing, so it realizes the balancing accessing machinery to guarantee all the services calls accessing into the network fairly.