| Why
use ATM ? |
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| Circuit
switched connections: |
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| After initial
setup no processing in network nodes |
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| Fixed bit
rates, fixed time delay |
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| Packet
switched connections: |
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| Flexible
bandwidth allocation due to statistical |
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| multiplexing,
varying time delay |
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| Complex
processing in network nodes |
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| ATM is based
on virtual connections: |
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| Minimal node
processing, statistical multiplexing |
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