name: CLF
full_form: Connectivity Session and Repository Location Function
context: The NASS (Network Attachment Subsystem) standard in TISPAN [18] has defined the interface through which the mobile core network is able to query the geographic location information based on the IP address. The network-based database can be the CLF (connectivity Session Location and Repository Function) element . The CLF registers the following information provided by the NACF (network access configuration function ), and make them relevant: the IP address located to the fixed access point, the network location information, and geography location information. The CLF provides e2 interface for service layer entity. The reference document [19] specifies e2 interface based on Diameter protocol. NOTE 1: The verifying node must receive the IP address as used in the NASS. This may require either that the verifying node be located directly at the edge of the NASS, or that the NASS uses public IP addresses without NAT or NAPT to Internet. The entity used to query CLF is located in the verifying
description: The Connectivity Session and Repository Location Function (CLF) is a network element responsible for registering and providing location information, including IP addresses, network locations, and geographic locations. It acts as a database for this information and provides an interface for service layer entities to query this data.
explanation: The context explicitly describes the CLF's role in managing and providing location information within the network, which aligns with the definition of a Network Function. The text highlights its interaction with other network elements, such as the NACF, and its provision of an interface (e2) for service layer entities, further solidifying its classification as a Network Function.
section_title: B.1	Example of Location verification based on IP address and line identifier in NASS
biotag_Context: O,B-Network Function,O,O,O,O,O,B-Organization,O,O,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,B-Network Function,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,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,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,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,B-Protocol,O,O,B-Device,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,I-Network Function,I-Network Function,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,O,O,O,O,O,O,O,O,O,O