Question: What happens to active MM connections in the network when a RR connection failure occurs?
Option 1: The MM sublayer will immediately re-establish all active MM connections.
Option 2: The MM sublayer will indicate to all CM entities associated with active MM connections that the MM connection is interrupted, and then locally release them.
Option 3: The MM sublayer will delay the release of some of the MM connections to allow other mobile stations to initiate call re-establishment.
Option 4: The MM sublayer shall locally release all active MM connections, but may optionally delay the release of some or all of the MM connections to allow the mobile station to initiate call re-establishment.
Explanation: According to the specification, when a RR connection failure occurs in the network, the MM sublayer will locally release all active MM connections. However, as an option, the network may delay the release of some or all of the MM connections to allow the mobile station to initiate call re-establishment. This allows for a more flexible handling of MM connections during RR connection failures.