Need a solu 14. A PABX provides queuing and automatic call back facility for outgoing calls. If there are20 outgoing call requests per hour and if the average call duration is three minutes, howmany trunks are needed to ensure delays less than 30 minutes for 90 per cent of therequests?1

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Answered: 14. A PABX provides queuing and…

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter25: Television, Telephone, And Low-voltage Signal Systems

Section25.1: Television Circuit

Problem 15R

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14. A PABX provides queuing and automatic call back facility for outgoing calls. If there are 20 outgoing call requests per hour and if the average call duration is three minutes, how many trunks are needed to ensure delays less than 30 minutes for 90 per cent of the requests? 1