IITF
Information Infrastructure Task Force, USA
AAL
Asynchronous transfer mode (ATM) Adaptation Layer
AAL1
Asynchronous transfer mode (ATM) Adaptation Layer 1
AAL2
Asynchronous transfer mode (ATM) Adaptation Layer 2
AAL3
Asynchronous transfer mode (ATM) Adaptation Layer 3
AAL4
Asynchronous transfer mode (ATM) Adaptation Layer 4