Question: Answer the following questions about the digital hierarchy in Figure 6.23: a. What is the overhead (number of extra bits) in the DS-1 service? b.

Answer the following questions about the digital hierarchy inFigure 6.23:

6.312 Mbps DS-0 4 DS-1 44.376 Mbps 7 DS-2 т DS-1 24 D т DS-2 274.176 Mbps D 6 DS-3 M т DS-3 D м 64 kbps т DS-4 D 1.

a. What is the overhead (number of extra bits) in the DS-1 service?
b. What is the overhead (number of extra bits) in the DS-2 service?
c. What is the overhead (number of extra bits) in the DS-3 service?
d. What is the overhead (number of extra bits) in the DS-4 service?

6.312 Mbps DS-0 4 DS-1 44.376 Mbps 7 DS-2 DS-1 24 D DS-2 274.176 Mbps D 6 DS-3 M DS-3 D 64 kbps DS-4 D 1.544 Mbps 24 DS-0

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