Chapter 9, Problem 8Q

Explanation of Solution

Differences between T-1, T-2, T-3, T-4 circuits:

T-1 circuit	T-2 circuit	T-3 circuit	T-4 circuit
A T-1 circuit provides a data rate of 1.544 Mbps.	A T-2 circuit provides a data rate of 6.312 Mbps.	A T-3 circuit provides a data rate of 44.376 Mbps.	A T-4 circuit provides a data rate of 274.176 Mbps.
It is used to transmit data, but is frequently used to transmit both data and voice	It is a multiplexed pack of four T-1 circuits...