Traffic Capacity of a Probability-Engineered Trunk Group

Abstract

The grade of service of a probability-engineered trunk group is defined to be the 20-day average blocking during the busy hour of the busy season. In this paper, an improved model for calculating grade of service is developed and used to increase the accuracy of the existing trunk-engineering procedures. Using the new model, new traffic-capacity tables and trunk-estimation algorithms have been designed for use in the Bell System.