3.1.5.3 Response

When the client receives a Response message (section 2.2.3.5) in the WAITING_FOR_CHALLENGE_RESPONSE state, the client MUST stop the ClientGuardTimer (section 3.1.2). The client MUST compare the response value of the Response message with the Expected Response. If the values match, the client MUST complete the pairing with the server and transition to the WAITING_FOR_DISCONNECT state. If the values do not match, the client MUST transition to the FATAL_ERROR state. In all cases, the client MUST initiate the disconnect of the control channel.