October 2018
Intermediate to advanced
555 pages
17h 33m
English
Content preview from Principles of Synchronous Digital Hierarchy
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180 Principles of Synchronous Digital Hierarchy
the SDH transmission (see Section 11.5.1.4). However, SSM conveys the qual-
ity of the reference as it is at the reference node because SSM is formed at that
node. It has no information on the impairment of the clock due to transmis-
sion link (wander and jitter) between the two nodes, but still it is considered
better than switching over to one of the references without any knowledge
about their quality.
Review Questions
1. What do you understand about synchronization? What is its signi-
cance in digital communication? Explain with an example.
2. What is the difference between a symbol and a bit ...
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