Question: For a 3GPP User Equipment (UE) attached via a Fixed Broadband Access, which of the following statements is true regarding IP-CAN Session Modification Procedures?
Option 1: Only the PCEF-initiated IP-CAN Session Modification Procedure is applicable.
Option 2: Both PCRF-initiated and PCEF-initiated IP-CAN Session Modification Procedures are applicable.
Option 3: Neither PCRF-initiated nor PCEF-initiated IP-CAN Session Modification Procedures are applicable for Fixed Broadband Access.
Option 4: The applicability depends on the specific Fixed Broadband Access technology used (e.g., DSL, Cable, etc.).
Explanation: In telecom networks, especially those involving 3GPP standards, the Policy and Charging Control architecture plays a crucial role in managing IP-CAN sessions. For UEs attached via Fixed Broadband Access, flexibility in session modification is key for efficient resource allocation and policy enforcement. Both the PCRF (Policy decision point) and PCEF (enforcement of those decisions) can initiate modifications to adapt to changing network conditions or user requirements, ensuring dynamic management of IP-CAN sessions.