Question: During a BSS external handover, how is the Localised Service Area (LSA) information conveyed to the target Base Station Subsystem (BSS)?
Option 1: Via a separate LSA update message sent after the handover completion
Option 2: By including the LSA ID in the handover cancellation message
Option 3: Through a dedicated LSA indication message sent to the MSC, which then forwards it to the target BSS
Option 4: Included in the handover request message
Explanation: In the context of BSS external handovers, efficiently conveying LSA information is crucial for seamless service continuity. Including the LSA information in the handover request message ensures that the target BSS is immediately informed about the allowed LSA for the connection, facilitating a smoother handover process without additional messaging overhead.