Why atm over sonet

They sound alike in that they are fast ways of sending information across a line. But their names are contradictory asynchronous vs. What is going on? ATM is the switching technology. SONET is the transmission technology. ATM is a logical way to organize the bits on a wire, but ATM does not care what kind of wire it is on.

SONET, however, is concerned with getting the bits from one end of the line to the other, and it is very concerned with the wire type: it must run on fiber optics its name stands for Synchronous Optical Network after all. It is hoped and believed that these technologies will eventually replace out current worldwide network phones, cable, and more.

But it will not happen all at once, and it will not happen soon. The costs are high, and the technology is new. There is a good side and a bad side to waiting: the good side is that by waiting, we don't find out that a new network is obsolete right after we put it in, but the bad news is that if we always wait for the next good thing to come along, we will never get around to installing a new network. Oh ok. What about telephony. Voice needs framing, too.

ATM brings muxing, qos, etc. Remember, ATM was primarily designed for voice traffic -- short chunks to avoid delay and jitter. Oh, so ATM was developed for telephony. So does it mean telephony will not work without ATM? Hari Hari 1. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

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