What Is Gx and Gy Interface?

Gx interface enables signaling of PCC decisions, negotiation of IP-CAN bearer establishment mode and termination of Gx session . Gy. It is online charging reference point. Gy lies between PCEF (Policy Control Enforcement Function) and OCS (Online Charging Function).

What is the difference between Gx and Gy interface?

The Gy reference the interface between a PGW and an OCS. Gx references the interface between PCRF and PGW/PCEF .

What is the Gy interface?

The Gy interface is the online charging interface between the PCEF/GW (Charging Trigger Function (CTF)) and the Online Charging System (Charging-Data-Function (CDF)). The Gy interface makes use of the Active Charging Service (ACS) / Enhanced Charging Service (ECS) for real-time content-based charging of data services.