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Showing posts from 2015

B0 byte

J0 byte in STM frame

Purpose of A1, A2 bytes of STM frame

STM frame structure

How SDH works?

Why SDH?

PDH ( Plesiochronous Digital Hierarchy)

E carrier hierarchy

DS hierarchy

Difference between DS1 and T1

E1 and DS1

What is a frame?

Modes of signal transmission

Analyzing the speech signal and introducing the standards!

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