Diameter Interfaces List : Free Guide 2020

Diameter Interfaces

Diameter Interfaces Base Protocol – IETF RFC 3588

InterfaceNetwork LocationSupported version
Diameter Commands for 3GPPIETF RFC 3589
Diameter Credit Control AppIETF RFC 4006
NASREQ Support for Network Access ServerIETF RFC 4005
EAP Support for Extensible Authentication ProtocolIETF RFC 4072
Mobile IPv4 Support for Diameter Mobile IPv4IETF RFC 4004
Diameter Mobile IPv6IETF RFC 5447
Diameter SIP ApplicationIETF RFC 4740
Re interfaceBetween OCF and Rating function3GPP TS 32.296
Rx+ interfaceRx reference point for EPC3GPP TS 32820, 3GPP TS 23.203 & TS 29.214
Gy interfaceBetween OCS and PCEF3GPP TS 32.29, TS 32.251 & RFC 4006
Gz interfaceBetween PCEF and OFCS3GPP TS 32.240, TS 32.295
Gq interfaceBetween AF and PDF3GPP TS 29.209
Gi interfaceBetween Packet Domain and an external packet data network3GPP TS 29.061
SGi interfacebetween the EPC based PLMN and the packet data network3GPP TS 29.061
Dz interfaceBetween BSF and SLF3GPP TS 29.109 & TS 33.220
Zn interfaceBetween BSF and NAF3GPP TS 29.109 & TS 33.220
Zn’ interfaceBetween BSF and Zn Proxy3GPP TS 29.109 & TS 33.220
Gmb interfaceBetween GGSN and BM-SC3GPP TS 29.061
Mz interfaceMz is the roaming variant of the Gmb reference point with the same functionality3GPP TS 29.061
Bi interfaceCCF to BS3GPP TS TS 32.225
MM10 interfaceMultimedia Messaging Service (MMS)OMA MM10 interface
S13 interfaceBetween MME and EIR3GPP TS 29.272
Gxb interfaceBetween ePDG and vPCRF3GPP TS 23.203
SWn interfaceBetween Untrusted Non-3GPP IP Access and ePDG3GPP TS 23402
Gq’ interfaceBetween AF and RACSETSI TS 183.017
E2 interfaceBetween AF and NASSETSI TS 283 035
E4 interfaceBetween NASS and RACSETSI TS 283 034
E5 interfaceBetween UAAF – UAAFETSI TS 282 004
Re interfaceBetween RCEF and RACSETSI TS 183 060
A3 interfaceBetween UAAF and AMFETSI TS 282 004
A4 interfaceBetween CLF and UAAFETSI TS 282 004
Rr interfacex-RACF03196-NGN-R3
Zh interfaceGeneric Authentication Architecture (GAA)PKT-SP-29.109
Zn interfaceGeneric Authentication Architecture (GAA)PKT-SP-29.109
CSCF- SLFPKT-SP-29.229
pkt-laes-2 interfaceSession Control Element — DF (electronic surveillance requirements)
pkt-mm-2 interfacePolicy Server — CMTS3GPP TS 29.212 & TS 23.203
TC-6Based on 3GPP RxMSF-IA-DIAMETER.010-FINAL
TC-7Based on 3GPP TyMSF-IA-DIAMETER.014-FINAL
TC-8Based on 3GPP TxMSF-IA-DIAMETER.013-FINAL
TC-9Based on 3GPP RqMSF-IA-DIAMETER.005-FINAL
TC-10Based on 3GPP GxMSF-IA-DIAMETER.012-FINAL
TC-11Based on 3GPP e4MSF-OA-DIMATER.011-FINAL
DB-0Based on 3GPP Cx/DxMSF-IA-DIAMETER.006-FINAL
DB-2Based on 3GPP Sh/DhMSF-IA-DIAMETER.003-FINAL
BI-1Based on 3GPP RfMSF-IA-BILLING.001-FINAL
Diameter Interfaces
Diameter Interfaces

Diameter AS Interfaces

Sh interface

Between AS and HSS, Subscription and Authentication Data – IMS

3GGP TS 29.328 & TS 29.329

Dh interface

Between AS and SLF

3GPP TS 29.328 & TS 29.329

Ro interface

Between AS and OCS, online charging in IMS & LTE

RFC 4006

3GPP TS 32.225 & TS 32.299

Rf interface

Between AS and OFCS

RFC 4006

3GGP TS 32.225 & TS 32.299


Diameter HSS Interfaces

Cx interface

Between CSCF and HSS

3GPP TS 29.228 & TS29.229

Zh interface

Between BSF and HSS

3GPP TS 29.109 & TS 33.220

Zh’ interface

Between BSF and HSS (used between operators)

3GPP TS 29.109 & TS 33.220

Wx interface

Between the 3GPP AAA Server and the HSS

3GPP TS 29.234

S6a interface

Between MME and HSS

3GPP TS 29.272

S6d interface

Between MME and HSS

3GPP TS 29.272


Diameter PCRF Interfaces

Sp interface

Between PCRF and SPR

3GPP TS 23.203, TS 29.328 & TS 29.329

Rx interface

Between AF and the PCRF

3GPP TS 23.203 & TS 29.214

Gx interface

Between PCEF and the PCRF

3GPP TS 29.212 & TS 23.203

Ty interface

Between AGW and PCRF

3GPP2 TSG-X X.S0013-014

Tx interface

Between AF and PCRF

3GPP2 TSG-X X.S0013-013

S7c interface

Transfer of (QoS) policy information from PCRF to the S-GW.

3GPP TS 32820, TS 23402

S9 interface

Between PCRF in the HPLMN (H‑PCRF) and a PCRF in the VPLMN (V‑PCRF)

3GPP TS 23.203 & TS 29.215

Gxa interface

PCRF and the BBERF

3GPP TS 23.203

Gxb interface

Between ePDG and vPCRF

3GPP TS 23.203


Diameter CSCF Interfaces

Dx interface

Between CSCF and SLF

3GPP TS 29.228 & TS29.229

P-CSCF- PAM Interface

Between P-CSCF – PAM

PKT-SP-QOS-I02-080425

3GPP TS 23.203 & TS 29.214

Diameter 3GPP AAA Interfaces

Dw interface

Between the 3GPP AAA Server and an SLF

3GPP TS 29.234

Wa interface

Between the WLAN AN and the 3GPP AAA Proxy

3GPP TS 29.234

Wd interface

Between the 3GPP AAA Proxy and 3GPP AAA Server

3GPP TS 29.234

Wm interface

Between the 3GPP AAA Server and the PDG

3GPP TS 29.234

Wg interface

Between the 3GPP AAA Server/Proxy and the WAG

3GPP TS 29.234

Pr interface

Between the 3GPP AAA Server and the PNA

3GPP TS 29.234

Wm interface

Between the 3GPP AAA Server and the PDG

3GPP TS 29.234

SWa interface

Between an un-trusted non-3GPP IP access and the 3GPP AAA Server/Proxy

3GPP TS 23402

SWd interface

Between the 3GPP AAA Proxy and 3GPP AAA Server

3GPP TS 23402

SWm interface

Between the 3GPP AAA Server/Proxy and the ePDG

3GPP TS 23402

SWx interface

Between the 3GPP AAA Server and the HSS

3GPP TS 23402

STa interface

Between a trusted non-3GPP IP access and the 3GPP AAA Server/Proxy

3GPP TS 23402

H2 interface

Between the 3GPP AAA Server and the HA

3GPP TS 23402


Rs interface

Between Service Control Physical Entity (SC-PE) and Resource and Admission Control Physical Entity (RAC-PE)

ITU Q.3301

Rw interface

Decision Physical Entity (PD-PE) and the Policy Enforcement Physical Entity (PE-PE)

ITU Q.3303.3

LOC-1 Interface

Based on 3GPP e2 – MSF-IA.DIAMETER.008-FINAL

Lawful Interception

Pkt-laes-2 interface

Session Control Element — DF (electronic surveillance requirements)

PKT-SP-ES-INF-I01

Amazing Diameter Messages command codes list | Update 2020

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