Typical ATM network connection

Upper layers

Upper layers

AAL

AAL

ATM layer

ATM layer

ATM layer

Phy

Phy

Phy

Originating node

ATM network nodes

User to Network Interface (UNI)

ATM layer

 ATM switching within the   ATM layer

Phy

Phy

Phy

Terminating node

User to Network Interface (UNI)

Network to Network Interface (NNI)