Question: In a Write-Replace Warning procedure, if neither the List of TAIs (Tracking Area Identifiers) nor the Global eNB ID is present in the WRITE-REPLACE WARNING REQUEST message, how does the MME (Mobility Management Entity) forward this message?
Option 1: The MME drops the message due to insufficient routing information.
Option 2: The MME forwards the message only to a randomly selected connected eNB (eNodeB).
Option 3: The MME forwards the message towards all connected eNBs.
Option 4: The MME requests additional routing information from the CBC (Cell Broadcast Centre) before proceeding.
Explanation: According to the procedure for handling a WRITE-REPLACE WARNING REQUEST without specific routing identifiers, the MME broadcasts the message to all connected eNBs, ensuring the warning reaches as wide an area as possible without targeted delivery information, maximizing dissemination of critical warnings.