AAL2 is further separated into two sub-layers that helps with the mapping from upper layer services to ATM cells: the Service Specific Convergence Sub-layer (SSCS) and the Common Part Sub-layer (CPS).
AAL2 is further separated into two sub-layers. AAL2 is further separated into the Service Specific Convergence Sub-layer (SSCS). AAL2 is further separated into the Common Part Sub-layer (CPS). These two sub-layers helps with the mapping from upper layer services to ATM cells.