Patent ID: 8175586

Claim:
A method for implementing a One Card Multiple-Number (OCMN) service, comprising: establishing a mapping relation between an internal network number of a user and at least one external number of the user, the internal network number being used when an initiated call is processed inside a network, an external number of a calling user being used to be displayed to a called user; determining an internal network number of the called user corresponding to an external number of the called user according to the mapping relation when the calling user initiates a call to the external number of the called user; determining an external number of the calling user corresponding to an internal network number of the calling user and sending the external number of the calling user to the called user; connecting the call to the called user according to the internal network number of the called user; wherein the method further comprises setting a number association unit storing the mapping relation; wherein determining an internal network number of a called user and connecting the call to the called user comprises: triggering, by the calling user, the call to the number association unit; and determining, by the number association unit, the internal network number of the called user corresponding to the external number of the called user, and connecting the call to the called user; wherein the connecting the call to the called user comprises: sending, by the number association unit, the internal network number of the called user to a home switch unit of the calling user, and indicating the home switch unit of the calling user to connect the call; replacing, by the home switch unit of the calling user, the external number of the called user carried in the call with the internal network number of the called user, and connecting the call to a home switch unit of the internal network number of the called user according to the internal network number of the called user; and connecting, by the home switch unit of the internal network number of the called user, the call to the called user; wherein the number association unit is a Service Control Point (SCP) and the switch unit is a Service Switch Point (SSP); and wherein sending the external number of the calling user to the called user comprises carrying the external number of the calling user to be displayed in a parameter of an original request message and sending the original request message containing the external number of the calling user to the home SSP of the called user.