Question: In the context of IP Multimedia (IM) Subsystem, what is the recommended approach for managing message priority over Cx/Dx interfaces when applying overload control as specified in the relevant guidelines?
Option 1: Utilize IETF RFC 7944 for Diameter message prioritization.
Option 2: Implement a proprietary queuing mechanism based on message type.
Option 3: Prioritize messages based solely on the timestamp of origination.
Option 4: Disable overload control to prevent message prioritization complexities.
Explanation: The correct answer, Option 1, reflects the recommended practice for managing message priority in the context of IP Multimedia Subsystem's Cx/Dx interfaces when overload control is applied. IETF RFC 7944 provides a standardized approach to Diameter message prioritization, ensuring interoperability and efficient network management across operator networks. This method is specifically suggested for scenarios involving overload control, making it the most appropriate choice among the options provided.