Question: What does the `BIND_TO_APPLICABLE_BEARER` value (1) of the Default-Bearer-Indication AVP indicate in terms of PCC rule binding, according to 3GPP specifications?
Option 1: The related PCC rule shall always be bound to a dedicated bearer with QCI=5.
Option 2: The related PCC rule shall follow bearer binding procedures based on the QCI/ARP within the QoS-Information AVP.
Option 3: The related PCC rule is not bound to any bearer until explicit binding is signaled by the UE (User Equipment).
Option 4: This value is reserved for future use and currently has no defined behavior.
Explanation: The correct answer, `BIND_TO_APPLICABLE_BEARER` with a value of (1), indicates that the PCC rule's binding to a bearer will be determined by the Quality of Service (QoS) parameters, specifically the QCI (QoS Class Identifier) and ARP (Allocation and Retention Priority) found within the QoS-Information AVP. This approach allows for dynamic adaptation based on the service's QoS requirements, highlighting the importance of flexible bearer management in telecom networks to ensure efficient resource allocation and adherence to service quality standards.