Question: In which direction and message can the user-user information element be 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: Mobile station to network direction, in the RELEASE COMPLETE message
Option 4: Network to mobile station direction, in the RELEASE message
Explanation: The user-user information element can be included in the network to mobile station direction when the RELEASE message is used to initiate call clearing. This allows for the transport of user-user information from the remote user during the call clearing process.