The Sandvine Policy Traffic Switch (PTS) embeds the Sandvine Policy Engine in network data planes to make policy decisions locally without unnecessary signaling. PTS software performs deep packet inspection and provides standard interfaces to acquire additional information for decision making. PTS measures subscriber usage in real-time and communicates with charging systems online using Diameter Gy and offline using file-based protocols. PTS platforms are available in different throughput capacities and can be clustered for additional scalability.