Question: In a RANflex configuration with group call redundancy, what is the requirement for Transient GCR (Group Call Reference) Data across multiple GCRs linked to MSCs (Mobile Switching Centers) within the same redundancy pool?
Option 1: The Transient GCR Data must be synchronized between all GCRs associated with MSCs in the same redundancy pool.
Option 2: Each GCR maintains independent Transient GCR Data, without synchronization, for group calls within the redundancy pool.
Option 3: Synchronization of Transient GCR Data is only required for permanent group call attributes, not transient ones.
Option 4: The need for synchronization depends on the specific group call service (e.g., VGCS) being utilized.
Explanation: In a RANflex configuration with redundancy to ensure high availability and consistency across the network, especially in critical services like group calls, it's crucial that all GCRs associated with MSCs within the same pool have the same view of the transient (current) state of group calls. This ensures seamless operation and management of ongoing group calls, even in the event of a failure or switch between MSCs/GCRs. Thus, synchronization of Transient GCR Data is necessary.