Question: Under what condition does the P-CSCF assign the same value for both Sharing-Key-UL AVP and Sharing-Key-DL AVP within a single media component of an AF session?
Option 1: When resource sharing is not applicable to either direction for that media component.
Option 2: When the AF session relates to an Emergency Session.
Option 3: When resource sharing applies to both directions (uplink and downlink) for a certain media component.
Option 4: When the PCRF requests distinct values for each direction.
Explanation: According to the specifications, when resource sharing is applicable in both uplink and downlink directions for a specific media component, the P-CSCF can assign the same value for both Sharing-Key-UL AVP and Sharing-Key-DL AVP within that media component, indicating shared resources in both directions. This facilitates efficient management of shared resources without requiring separate identifiers for each direction when sharing is bi-directional.