AAL 5 operation

H

SAR-PDU

CS-PDU info (< 65532 bytes)

             User info (e.g. IP packet)

SAR-PDU

SAR-PDU

Payload

SAR-PDUs

Last SAR-PDU => PTI LSB = 1

ATM cell

PTI LSB = 0

8 bytes: length of info field, CRC error checking

pad

N x 48 bytes

(PTI is in ATM cell header)

48 bytes