By using ATM technology, variable
bit traffic is transport over SDH Network. In hybrid ATM, payload of SDH frame
are filled with ATM cells by using ATM cells. The bit rates are depends on the
number of ATM cells. In this system SDH traffic and ATM traffic are combined in
to same SDH bearer, Nodes have the visibility of ATM cells. Therefore they
separate the SDH traffic from ATMJ. And they route each one to their respective
switching fabric. After they have been swathed, they may recombine in a hybrid
payload, network element requires both SDH & ATM traffic management. ATM
cells are mapped in conceded STS-N payload.
 |
| SDH frames with ATM cells |
Voice
traffic ATM over SDH
ATM is a
core protocol used over the sonnet/SDH backbone of the ISDN. All the data
packets in the link always encounter full size under normal quinine conditions
so that experience maximum quinine delays, so that we need some technique to
avoid this. It is ATM. Reduction of this end to end delay is very much important
when carrying voice traffic, because the conversion of digitized voice in to an
analog audio signal is a hesitantly real time process. When there is a stream
of data and in they stream there is a space and patently they data is not
available. If it is valid able delayed due to quinine then we face a problem to
overcome that we uses ATM over SDH.
Throughout this article I hope you may get some thing.
This provides basic explanation and future will cover more. Comments are well come. Thank you.
