| AAL
2 |
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| When
transmitting many low/variable bit rate signals |
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| between two
end-points using ATM, AAL 2 provides |
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| low
packetization delay and high bandwidth |
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| efficiency at
the same time |
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| AAL 1 used =>
low delay means low efficiency: |
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| h |
| payload |
| h |
| payload |
| h |
| payload |
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| AAL 2 used =>
multiplexing of different signals |
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| into ATM cell payloads in
a flexible manner |
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| h |
| payload |
| h |
| payload |
| h |
| payload |