TDF-U Traffic Detection Function User plane function
The TDF-U is located at the ingress and egress point to a PDN (Packet Data Network) such as the Internet when control and user plane separation is in place. Under the control of a TDF-C (Traffic Detection Function Control plane function) the TDF-U assists with bearer and APN (Access Point Name) policing, service data flow traffic detection, application detection, deep packet inspection and event reporting.
