Question: What happens when a local Connection Management (CM) entity releases an established Mobility Management (MM) connection?
Option 1: The release of the CM connection is done locally in the MM sublayer, without sending any MM messages over the radio interface.
Option 2: The release of the CM connection triggers the transmission of MM messages over the radio interface to notify the remote entity.
Option 3: The release of the CM connection causes the local MM sublayer to send a notification to the core network.
Option 4: The release of the CM connection has no impact on the MM sublayer.
Explanation: When a local Connection Management (CM) entity releases an established Mobility Management (MM) connection, the release is done locally in the MM sublayer. This means that no MM messages are sent over the radio interface for this purpose, ensuring efficient and localized management of the connection.