This Recommendation addresses the transport of IP services over ATM. IP services in this Recommendation are defined as services provided at the IP layer. IP services in this Recommendation do not include those at the application layer (e.g., network banking).This Recommendation identifies the IP over ATM approach for public networks adopting ATMtechnology, including service provider networks and carrier networks, but does not preclude the same approach where applicable in access networks, private networks and end systems. Approaches taken into account include classical IPOA, MPOA, and MPLS. These approaches are described briefly in Appendix I.