Question: In the context of Policy and Charging Control (PCC), what is a condition under which no Charging-Rule-Name AVPs or Charging-Rule-Base-Name AVPs need to be provided within the Access-Network-Charging-Identifier-Gx AVP?
Option 1: When the charging identifier applies specifically to a default bearer.
Option 2: When the charging identifier applies to the entire IP CAN session.
Option 3: During the modification of an existing PCC rule.
Option 4: When activating a new IP-CAN bearer.
Explanation: According to the specifications, if the charging identifier (e.g., GCID) within the Access-Network-Charging-Identifier-Gx AVP applies to the entire IP CAN session, there is no requirement to provide Charging-Rule-Name AVPs or Charging-Rule-Base-Name AVPs. This is because the scope of the charging identifier encompasses all aspects of the IP CAN session, rendering additional rule specifications unnecessary for this particular context.