Why is sonet called a synchronous network

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Reference no: EM131306283

1. How is an STS multiplexer different from an add/drop multiplexer since both can add signals together?

2. What is the relationship between STS signals and OC signals?

3. What is the purpose of the pointer in the line overhead?

4. Why is SONET called a synchronous network?

Reference no: EM131306283

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