Question: In a Directed Retry Handover scenario, if an A-HANDOVER-FAILURE message is received from BSS-B, what action(s) may MSC-A optionally take?
Option 1: Only retry the handover to the same cell (BSS-B)
Option 2: Select the next cell from the list and attempt a handover, or send an A-HANDOVER-REQUIRED-REJECT if applicable
Option 3: Immediately clear the complete call without further attempts
Option 4: Retry the handover to the same cell (BSS-B), select the next cell from the list and attempt a handover, send an A-HANDOVER-REQUIRED-REJECT if an A-HANDOVER-COMMAND hasn't been sent, or retry the assignment procedure to BSS-A
Explanation: Upon receiving an A-HANDOVER-FAILURE from BSS-B in a Directed Retry Handover, MSC-A can optionally retry the handover to the same cell, select and attempt another cell, send an A-HANDOVER-REQUIRED-REJECT under certain conditions, or retry assignment to BSS-A, making Option 4 the comprehensive choice.