Question: What is the primary reason for the Policy and Charging Rules Function (PCRF) to send an Abort-Session-Request (ASR) command to the Application Function (AF) in a telecom network?
Option 1: To establish a new bearer for an ongoing session, enhancing user experience.
Option 2: To request additional resources for a congested network, ensuring QoS.
Option 3: To notify of a successful session handshake between the UE and the network.
Option 4: To inform that the bearer for the established session is no longer available.
Explanation: The PCRF communicates to the AF that resources (bearer) initially allocated for a session are no longer available, which could be due to network congestion, resource reallocation, or session inactivity, impacting user experience and network performance.