ATM technology in SDH

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.