name: ECF
full_form: Event Charging Function
context: The AS and MRFC are able to distinguish whether to apply offline or online charging, i.e. whether to send charging information on the Rf interface to the CCF or on the Ro interface to the ECF (or to use both). The decision of which interface to use is based on the information (CCF and/or ECF address) the AS/MRFC receive in the SIP signalling and the system configuration as provisioned by the operator. If the AS/MRFC only receive the CCF address and do not receive an ECF address then they use only the Rf interface. If only the ECF address was provided then they use only the Ro interface. In cases where both CCF and ECF addresses are provided it is possible to use both interfaces simultaneously. However, operators may overrule the addresses received via the SIP signalling and use their own configured rules instead. Operators may configure locally on the AS/MRFC an ECF and/or CCF address. The CCF address may be locally configured on all other IMS nodes. The choice of whether the IMS nodes
description: The Event Charging Function (ECF) is a network function responsible for handling charging information in the IMS network, specifically through the Ro interface. It works in conjunction with the CCF (Charging Collection Function) to enable offline or online charging based on system configuration and SIP signalling.
explanation: The context explicitly states that ECF is a network function that manages charging events within the IMS network via the Ro interface. This role directly aligns with the definition of a Network Function.
section_title: 4.1.1Usage of Rf and Ro Interfaces
biotag_Context: O,B-Network Function,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,B-Network Function,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,B-Network,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O