Patent ID: 7272392
Filing Date: 2007-09-18
Classification: H04W

Abstract:
1. A method, comprising: registering a roaming mobile station with a second mobile communications network, the method being used for establishing a connection in a communication system, the connection involving the mobile station subscribing to a first mobile communications network and roaming in the second mobile communications network, the communication system comprising a first connection management entity provided in association with the first mobile communication network and a second connection management entity provided in association with the second mobile communication network; registering the roaming mobile station with the second connection management entity; in response to a request for a connection involving the roaming mobile station, routing signaling that associates with the request to one of the connection management entities; setting up a communications link between the first and second mobile communications networks via a third communications network by means of the first and second connection management entities based on said signaling associated with the request; establishing the requested connection by means of the communications link, the first mobile communications network and the second mobile communications network; and receiving the request for connection at a switching center of one of the first and the second mobile communications network, said switching center being configured to signal to the connection management entity provided in association with the same mobile communications network as said switching center in response to receiving the request, and said connection management entity being configured to request from the connection management entity provided in association with the other one of said first and second mobile communications networks for a communications link to be set-up between the first and second mobile communication networks.