name: PCN
full_form: Packet switched Core network Node (SGSN, SâGW, PâGW, TDF)
context: As described in TS 32.240 [1], the CTF (an integrated component in each charging relevant NE) generates charging events and forwards them to the CDF. The CDF, in turn, generates CDRs which are then transferred to the CGF. Finally, the CGF creates CDR files and forwards them to the BD. If the PCN generating the charging information has an integrated CDF, then the PCN can produce CDRs. The CGF may also be integrated in the PCN, or it may exist as a physically separate entity. If the CGF is external to the PCN, then the CDF forwards the CDRs to the CGF across the Ga interface. In this case, the relationship between PCN/CDF and CGF is m:1. If the CGF is integrated in the PCN, then there is only an internal interface between the CDF and the CGF. In this case, the relationship between PCN/CDF and CGF is 1:1. An integrated CGF may support the Ga interface from other PCN/CDFs. If the CDF is external to the PCN, the charging events are transferred from the PCN to the CDF via the Rf interface
description: A Packet switched Core network Node (PCN) refers to a set of network functions within the core network that manage packet-switched data, including SGSN, S-GW, P-GW, and TDF. These nodes play a crucial role in handling charging information, generating charging events, and forwarding them to the Charging Data Function (CDF) for further processing.
explanation: The text describes PCN as a set of network functions within the core network responsible for managing data and handling charging information. This clearly classifies it as a Network Function.
section_title: 4.2PS domain offline charging architecture
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