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12.8 Traffic measurements on a PBX-to-central-office trunk group indicate that dur- ing the busiest hour of the day the trunks are 80% utilized. If there are eight trunks in the group, what is the blocking probability, assuming blocked calls do not return? How many trunks must be added to achieve a maximum block- ing probability of 5%?

12.8 Traffic measurements on a PBX-to-central-office trunk group indicate that dur- ing the busiest hour of the day the trunks are 80% utilized. If there are eight trunks in the group, what is the blocking probability, assuming blocked calls do not return? How many trunks must be added to achieve a maximum block- ing probability of 5%?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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12.8 Traffic measurements on a PBX-to-central-office trunk group indicate that dur- ing the busiest hour of the day the trunks are 80% utilized. If there are eight trunks in the group, what is the blocking probability, assuming blocked calls do not return? How many trunks must be added to achieve a maximum block- ing probability of 5%?
Transcribed Image Text:12.8 Traffic measurements on a PBX-to-central-office trunk group indicate that dur- ing the busiest hour of the day the trunks are 80% utilized. If there are eight trunks in the group, what is the blocking probability, assuming blocked calls do not return? How many trunks must be added to achieve a maximum block- ing probability of 5%?
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