Question: What happens to an emergency call or PS connection establishment for an emergency session if authentication of the (U)SIM fails?
Option 1: The call or PS connection is rejected and terminated immediately.
Option 2: The call or PS connection proceeds without integrity protection or ciphering.
Option 3: The call or PS connection is put on hold until authentication is successful.
Option 4: The emergency call or PS connection establishment for an emergency session shall proceed as in the case of a non-emergency call or non-emergency related PS connection.
Explanation: According to the security procedures applied during emergency call establishment or PS connection establishment for an emergency session, if authentication of the (U)SIM fails, the emergency call or PS connection establishment shall proceed as in the case of a non-emergency call or non-emergency related PS connection. This ensures that the emergency services are still accessible even if authentication fails.