Slajd PPT

A.A.L. 1 Functions:

ATM

Layer

AAL

Layer

AAL 1 Data 48 Bytes

SAR-SDU 47 Bytes.

ATM Header

5 Bytes

CSI

SN

SNP

1 Bit

3 Bits

4 Bits

CSI = Convergence Sublayer Indicator - Clock Recovery.

SNP = Sequence Number Protection. - Lost Cell Detection.

SN = Sequence Number.

SAR-SDU = Segmentation & Reassembly Service Data Unit.

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