A method, performed by a mobile management entity (MME), for providing a voice call service to a user equipment (UE) in a mobile communication system and the MME are provided. The method includes receiving, from a mobile management entity (MME), a first message for paging to provide the voice call service to the UE; and sending, to the MME, a second message including a cause associated with a domain change from a packet switching (PS) domain to a circuit switching (CS) domain, wherein, if the MME receives the second message, a third message for requesting suspension of a bearer to provide a service for the UE is sent to a gateway in the PS domain.