Diameter Glossary Interfaces

Diameter Interfaces

Interface	Meaning	Standard
BP	Base Protocol	RFC 6733
Cx	3GPP user's data management interface (in IMS between CSCF and HSS)	TS 29.229
Dh	3GPP user's data management interface between the AS and the SLF	TS 29.328 TS 29.329
Diameter EAP	Diameter Extensible Authentication Protocol (EAP) Application	RFC 4072
Dx	3GPP user's data management interface between the CSCF and the SLF	TS 29.229
e2	Policy management interface between the Connectivity Session Location and Repository Function (CLF) and an Application Function (AF) in the TISPAN Architecture	ES 283.035
e4	Policy management interface between the Connectivity Session Location and Repository Function (CLF) and the RACS in the TISPAN Architecture	ES 283.034
Gi	Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)	TS 29.061
Gq	3GPP policy management interface between PDF and AF in the IMS architecture	TS 29.209
Gq'	Policy management interface between Service Policy Decision Function (SPDF) and AF in the TISPAN Architecture	TS 183.017
Gx	3GPP provisioning interface between the Policy and Charging Rules Function (PCRF) and the Policy and Charging Enforcement Function (PCEF)	TS 29.212
Gxx	3GPP interface allowing for a PCRF to have a dynamic control over the Bearer Binding and Event Report Function (BBERF) behaviour	TS 29.212
Gy	3GPP Online charging interface between a PCEF and an OCS	TS 32.240 TS 32.299
H2	3GPP interface between the 3GPP AAA Server and the HA. It is used to transport authentication, authorization and charging-related information in a secure manner	TS 29.273
NASREQ	Diameter Network Access Server Application	RFC 4005
Ph	3GPP interface between the Presence Network Agent and the HSS	TS 29.328 TS 29.329
Px	3GPP interface between the Presentity presence proxy and the HSS	TS 29.229
Rf	3GPP Offline Accounting, i.e a charging method which does not affect, the rendered service in real-time	TS 32.299
Ro	3GPP Online Accounting, i.e. a charging method which is able to control the rendered service in real-time	TS 32.240 TS 32.299
Rx	3GPP Policy and Charging Control interface	TS 29.214
SCAP	Ericsson's Service Charging Application Protocol	Ericsson CCN
S6a	3GPP interface enabling the transfer of subscriber related data between the MME and the HSS	TS 29.272
S6b	3GPP interface between the 3GPP AAA Server and the PDN-GW. It is used to authenticate and authorize the UE, and update the PDN-GW address to the 3GPP AAA server and HSS	TS 29.273
S6c	Diameter based protocols to support Short Message Service (SMS) capable Mobile Management Entities (MMEs)	TS 29.338
S6d	3GPP interface enabling the transfer of subscriber related data between the SGSN and the HSS	TS 29.272
S6m	Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications	TS 29.336
S6n	Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications	TS 29.336
S6t	Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications	TS 29.336
S7a	Evolved Packet System (EPS); Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol	TS 29.272
S7d	Evolved Packet System (EPS); Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol	TS 29.272
S9	3GPP interface between a HPLMN and a VPLMN for roaming scenarios.	TS 29.215
S13	3GPP interface enabling the ME Identity check procedure between the MME and the EIR	TS 29.272
S13'	3GPP interface enabling the ME Identity check procedure between the SGSN and the EIR	TS 29.272
S15	3GPP interface enabling provisioning and removal of dynamic QoS rules between the HNB GW and the PCRF and between the HNB GW and the V-PCRF	TS 29.212
Sd	3GPP interface between the PCRF and the TDF. It is used for the management of TDF sessions	TS 29.212
SGd	Diameter based protocols to support Short Message Service (SMS) capable Mobile Management Entities (MMEs)	TS 29.338
Sgi	Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)	TS 29.061
Sh	3GPP user's data management interface between AS and HSS in the IMS architecture	TS 29.328 TS 29.329
SLg	Location Services (LCS); Evolved Packet Core (EPC) LCS Protocol (ELP) between the Gateway Mobile Location Centre (GMLC) and the Mobile Management Entity (MME)	TS 29.172
SLh	Location Services (LCS); Diameter-based SLh interface for Control Plane LCS	TS 29.173
STa	3GPP interface between a non-3GPP IP access network and the 3GPP AAA Server or between a non-3GPP IP access network and the 3GPP AAA Proxy. It is used to authenticate and authorize the UE	TS 29.273
SWa	3GPP interface between the untrusted non-3GPP IP access and the 3GPP AAA Server or Proxy. It is optionally used to authenticate and authorize the UE for the access to the EPS	TS 29.273
SWd	3GPP interface between the 3GPP AAA Proxy and 3GPP AAA Server. It is used to transport AAA messages	TS 29.273
SWm	3GPP interface is between the ePDG and the 3GPP AAA Server or between the ePDG and the 3GPP AAA Proxy. It is used to authenticate and authorize the UE	TS 29.273
SWx	3GPP interface between the 3GPP AAA Server and the HSS. It is used to authorize the UE and to transport PMIPv6 related mobility parameters in the chained tunnel cases	TS 29.273
Sy	3GPP interface enabling transfer of policy counter status information relating to subscriber spending from OCS to PCRF	TS 29.219
T4	Diameter-based T4 interface for communications with packet data networks and applications	TS 29.337
T6a	Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications	TS 29.128
T6b	Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications	TS 29.128
T6ai	Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications	TS 29.128
T6bi	Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications	TS 29.128
T7	Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications	TS 29.128
Tsp	Tsp interface protocol between the MTC Interworking Function (MTC-IWF) and Service Capability Server (SCS)	TS 29.368
Tx	3GPP2 interface between an Application Function (AF) and a Policy and Charging Rules Function (PCRF) in support of Service Based Bearer Control	X.S0013.013-0
V4	V2X Control Function to Home Subscriber Server (HSS) aspects (V4); Stage 3	TS 29.388
Zh	3GPP bootstrapping interface between the BSF and the HSS	TS 29.109
Zh'	3GPP bootstrapping interface between the BSF and the HLR	TS 29.109
Zn	3GPP GAA applications interface between the BSF and the NAF	TS 29.109
Zpn	3GPP GBA push nterface between the BSF and the NAF	TS 29.109

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