interfaces

C Interface

C interface is between the MSC and HLR.

Gn Interface

Gn interface is between the SGSN and GGSN.

Gr Interface

Gr interface is between the SGSN and HLR.

Gx Interface

Gx interface is between the PCEF and PCRF.

Gy Interface

Gy interface is between the PCEF and OCS.

S1 Interface

S1 interface is between the eNB (eNodeB) and the MME (Mobility Management Entity).

S10 Interface

S10 interface is between the MME and MME.

S11 Interface

S11 interface is between the MME and SGW.

S12 Interface

S12 interface is between the RNC and SGW.

S2b Interface

S2b interface is between the PGW and ePDG.

S3 Interface

S3 interface is between the MME and SGSN.

S4 Interface

S4 interface is between the SGSN and SGW.

S5/S8 Interface

S5/8 interface is between the SGW and PGW.

S6a Interface

S6a interface is between the MME (Mobility Management Entity) and HSS (Home Subscriber Server).

S9 Interface

S9 interface is between the Visiting PCRF and Home PCRF.

Tsp Interface

Tsp interface is between the MTC-IWF (Machine Type Communication-Interworking Function) and SCS (Service Capability Server).

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