Question: What does the absence of the Session-Linking-Indicator AVP in a Gx session imply about session linking between the Gateway Control Session and the Gx session?
Option 1: SESSION_LINKING_DEFERRED, indicating delayed linking attempts by the PCRF.
Option 2: SESSION_LINKING_IMMEDIATE, indicating immediate linking by the PCRF.
Option 3: No linking will be attempted under any circumstances.
Option 4: The PCRF will periodically retry linking until successful.
Explanation: According to specifications, the absence of the Session-Linking-Indicator AVP defaults to SESSION_LINKING_IMMEDIATE. This means the Policy and Charging Rules Function (PCRF) is instructed to link the new Gateway Control Session and an existing Gx session immediately, without delay, highlighting the importance of default behaviors in telecom signaling for seamless network operations.