The present document describes the Diameter-based interfaces between the SCEF/IWK-SCEF and other network entities such as MME/SGSN for the Architecture enhancements to facilitate communications with packet data networks and applications.
In particular, this document specifies the T6a
interface between the MME and the SCEF, the T6ai
interface between the MME and the IWK-SCEF, the T6b
interface between the SGSN and the SCEF, the T6bi
interface between the SGSN and the SCEF and the T7
interface between the SCEF and the IWK-SCEF. The procedures over those interfaces are defined in TS 23.682