Signalling requirements and protocol at the M13 interface between the transport location management and network information distribution physical entities (Study Group 11)
Recommendation ITU-T Q.3230 provides the protocol for the interface between the transport location management physical entity (TLM-PE) of the network attachment control entity (NACE) and the network information distribution physical entity (NID-PE) of the mobility management control entity (MMCE). The M13 interface provides the keying material,derived from the user equipment (UE) authentication procedure,in support of the security association required between the NID-PE and the UE. This Recommendation supports information flows providing the keying material via the M13 reference point as specified in Recommendation ITU-T Y.2018.