PPPoA

PPP over ATM (PPPoA) enables ATM to carry PPP protocol packets. With PPPoA, PPP packets, in which IP packets or other protocols' packets are encapsulated, are encapsulated in ATM cells. In this approach, ATM is the carrier of PPP packets and the communication process of PPPoA is managed by PPP, which allows for flexibility and rich applications. To transmit PPP packets across ATM, a virtual-template (VT) interface is required.