Question: In a Mission Critical (MC) service scenario, what is the primary purpose of interconnection for a migrated MC service user receiving service from a partner MC system?
Option 1: To enable communication with MC service users in their primary MC system.
Option 2: To facilitate service handover between different Radio Access Networks (RANs).
Option 3: To enhance Quality of Service (QoS) for non-mission critical communications.
Option 4: To provide billing information exchange between partner networks.
Explanation: Interconnection in this context allows a migrated MC service user to participate in communications with other users within their original (primary) MC system, even when they are temporarily being served by a partner MC system. This ensures continuity of critical communications across systems, highlighting the importance of interoperability for mission-critical services.