A method for paging a circuit switched, CS, -domain terminated call service in a new mobility management entity, MME, of a mobile communication system, the method comprising: receiving a tracking area update, TAU, request message including a last registered tracking area identity, TAI, from a target terminal when the target terminal moves from a first cell included in a first TAI list managed by an old MME to a second cell included in a second TAI list managed by the new MME and the target terminal accesses a packet network; based on the last registered TAI being not included in the second TAI list, sending an inquiry to the old MME about whether a terminated call paging for the target terminal is being performed; generating a TAU accept message including a CS paging indicator set to a first value instructing the target terminal to initiate a circuit switched fallback, CSFB, process based on an answer indicating that the terminated call paging for the target terminal is being performed, the answer being in response to the inquiry; generating a TAU accept message including the CS paging indicator set to a second value instructing the target terminal not to initiate the CSFB process based on the answer indicating that the terminated call paging for the target terminal is not being performed; and transmitting (509, 511) the generated TAU accept message to the target terminal, wherein the CS paging indicator is set in a reserved bit within an information element field indicating an evolved packet system, EPS, update result, and wherein the CSFB process includes disconnecting of the target terminal from the packet network and receiving a voice call by using a circuit network. receiving a tracking area update, TAU, request message including a last registered tracking area identity, TAI, from a target terminal when the target terminal moves from a first cell included in a first TAI list managed by an old MME to a second cell included in a second TAI list managed by the new MME and the target terminal accesses a packet network; based on the last registered TAI being not included in the second TAI list, sending an inquiry to the old MME about whether a terminated call paging for the target terminal is being performed; generating a TAU accept message including a CS paging indicator set to a first value instructing the target terminal to initiate a circuit switched fallback, CSFB, process based on an answer indicating that the terminated call paging for the target terminal is being performed, the answer being in response to the inquiry; generating a TAU accept message including the CS paging indicator set to a second value instructing the target terminal not to initiate the CSFB process based on the answer indicating that the terminated call paging for the target terminal is not being performed; and transmitting (509, 511) the generated TAU accept message to the target terminal, wherein the CS paging indicator is set in a reserved bit within an information element field indicating an evolved packet system, EPS, update result, and wherein the CSFB process includes disconnecting of the target terminal from the packet network and receiving a voice call by using a circuit network.