Question: What is the primary purpose of the Global Line Identifier (GLI) in the context of 5G System (5GS) wireline convergence access support?
Option 1: To provide a globally unique identifier for the line connecting the Residential Gateway (RG) to the network, ensuring uniqueness across different deployments.
Option 2: Exclusively for building a SUCI in FN BRG scenarios, without any broader application in wireline access.
Option 3: Solely as User Location Information on wireless access, not applicable to wireline access scenarios.
Option 4: To administer the Line ID source and value, which are managed by the UE (User Equipment).
Explanation: The Global Line Identifier (GLI) is specified to define a globally unique identifier for the line connecting the Residential Gateway (RG) to the network. This uniqueness is crucial, especially since the Line ID itself may not be unique in all deployments. The GLI's composition ensures this global uniqueness, vital for its applications across different types of RGs.