Saturday, August 29, 2009


ATM, which stands for Asynchronous Transfer Mode is a ”de facto standard” developed
by the ATM Forum and is a switching method of communication, which can be used in both
LANs and WANs.

ATM specifications are being written to ensure that ATM smoothly integrates numerous
existing network technologies.

Today, in many instances, separate networks are used to carry voice, data and video
information, mostly because these traffic types have different characteristics. For instance,
data traffic tends to be "bursty" while voice and video tend to be more "continuous".
With ATM, separate networks will not be required. ATM is the only technology which
from the beginning, was designed to accommodate the simultaneous transmission of data,
voice and video.

ATM is available at various speeds but the most commonly used are 25, 155 and 622 Mbps.

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