Question: In a RANflex configuration with group call redundancy, what is the primary purpose of exchanging SYNC_GCR messages between GCRs associated with MSCs in the same redundancy pool?
Option 1: To initiate simultaneous group calls with the same reference across different anchor MSCs.
Option 2: To synchronize static configuration data among all GCRs in the network.
Option 3: To prevent duplicate group call setups by synchronizing transient data modifications.
Option 4: To perform load balancing between GCRs for incoming group calls.
Explanation: The correct answer highlights the key benefit of SYNC_GCR messages in a redundant configuration. By synchronizing transient data changes, the system ensures no two anchor MSCs can establish simultaneous group calls with the same reference, preventing conflicts and ensuring seamless service continuity.