Question: In which direction and message is the User-User Information Element included to transport user-user information from the remote user?
Option 1: Mobile station to network direction, in the SETUP message
Option 2: Network to mobile station direction, in the CONNECT message
Option 3: Network to mobile station direction, in the RELEASE COMPLETE message
Option 4: Mobile station to network direction, in the DISCONNECT message
Explanation: The User-User Information Element is included in the RELEASE COMPLETE message sent from the network to the mobile station. This allows user-user information to be transported from the remote user during call clearing.