scope:

This Recommendation defines the requirements and protocol for the Ru interface (identical to the TC-TC1 interface defined in [ITU-T Y.2012]) between a transport location management physical entity (TLM-PE) in a network attachment control entity (NACE) and a policy decision physical entity (PD-PE) in a resource and admission control entity (RACE) of ITU-T NGN release 1 architecture.

Whenever applicable, this Recommendation specifies the requirements for the Ru interface referring to the Diameter base specifications. Whenever needed, extensions to Diameter-based specifications are provided in this Recommendation.