PAGING SIGNALLING MECHANISM

A paging signalling mechanism is disclosed. The solution comprises receiving (400) a token from a network for a first subscription identity used by the terminal device, entering (402) an inactive or idle state for the first subscription identity, receiving (404) a paging message from the network for the first subscription identity while maintaining a connected mode with a second subscription identity used by the terminal device. A message is transmitted (406) to the network, as part of a radio resource control, RRC, connection resumption or establishment procedure for the first subscription identity, the message comprising an integrity protection token generated based on the token and indicating that the terminal device is busy. A response is received (408) to the transmitted message, the response indicating that an RRC connection for the first subscription identity was not established or resumed.