Question: What does the absence of a Bearer-Usage AVP in a PCC context imply about the bearer usage information for 3GPP-GPRS and 3GPP-EPS access types?
Option 1: The bearer is exclusively used for IMS signalling.
Option 2: Specific bearer usage information is not required for this session.
Option 3: The bearer is dedicated to GENERAL (non-IMS) data transfer.
Option 4: No specific bearer usage information is available.
Explanation: If the Bearer-Usage AVP has not been previously provided, its absence indicates that no specific information is available regarding how the bearer is being used.