what is sdh,pdh?how exactly the call get connected?
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Answer Posted / anamika pandey
SDH :-synchronous digital hiearchy,in which a master clock
regulates all the information that may or may not be at
same rate,rate is maintained to be in the multiples of
64kbps.
PDH :- Pelisochronous digital hiearchy,it is predecessor of
SDH,it is nearly synchronous.in this maintaining data rate
to be 64kbps was difficult due to diffrent clock pulses.
| Is This Answer Correct ? | 26 Yes | 6 No |
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