This Recommendation defines the control plane and control protocol interworking procedures for
ATM and frame relay connections across an IP/MPLS packet-switched network using pseudo
wires.
The following items are not within the scope of this Recommendation:
• Peer-partition interworking between ATM and frame relay control planes.
• Peer-partition interworking between ATM (or frame relay) and IP/MPLS control planes for
setting up and managing switched connections between ATM (or frame relay) and
IP/MPLS end-points.
• L2TPv3 pseudo wires [b-IETF RFC 3931].