Question: What happens to a cell's CBS (Cell Broadcast Service) operational state when a BSC/RNC sends a FAILURE-INDICATION Request to the CBC, and what triggers this action is not relevant here but what is the outcome of this request on Cell status?
Option 1: The cell enters a "CB-Maintenance" state, allowing for limited CBS operations.
Option 2: The cell's CBS operational state remains unchanged until a manual restart.
Option 3: The cell enters a "CB-not-operational" state, with its CBS message status undefined until a Restart-Indication is received.
Option 4: The cell automatically initiates a Restart-Indication sequence to immediately recover CBS operations.
Explanation: When a BSC/RNC sends a FAILURE-INDICATION Request to the CBC, it indicates a CB-related problem in one or more cells. As a result, any referenced cell transitions into a "CB-not-operational" state. This state change signifies that the CBS message status for these cells becomes undefined. The cells will remain in this non-operational state until they receive a RESTART-INDICATION, signaling the resumption of normal CB operations. This process ensures that problematic cells are temporarily isolated from CBS activities to prevent potential disruptions or errors.