Calculating the Number of Phones and Number of Calls from the 1 MHz Full Duplex Trunk Telephone System

Question

A simple telephone system consists of two end offices and a single toll office to which each end office is connected by a 1-MHz full-duplex trunk. The average telephone is used to make five calls per 8-hour workday. The mean call duration is 6 min. Ten percent of the calls are long-distance (i.e., pass through the toll office). What is the maximum number of telephones an end office can support? (Assume 4 kHz per circuit, and note that you may need to do some additional readings about transmission media and telephone systems).

Summary

The question belongs to Computer Science and particularly to Networking. The question here is about calculation of number of calls being transmitted through a telephone trunk line and the number of phones that are making the calls.

Total Word Count 78