Question: In a mission-critical service architecture, where is a Diameter proxy entity typically collocated when used on the AAA-2 interface?
Option 1: Within the SIP Core/IMS, but not specifically tied to any server.
Option 2: With the Migration Management Server.
Option 3: Exclusively at the edge of the network, adjacent to User Equipment (UE).
Option 4: Embedded within every Mission Critical Service Server for redundancy.
Explanation: According to mission-critical service functionality, a Diameter proxy on the AAA-2 interface is typically collocated with the Migration Management Server, highlighting efficient management and signaling integration.