Patent ID: 6580907
Filing Date: 2003-06-17
Classification: H04W

Abstract:
A method of operating a communications network interconnected with a plurality of other communications networks, the method comprising the steps of:establishing data storage and a location register having entries comprising a user identifier and an associated location identifier; and responding to an originating call to a called user by accessing the location register in accordance with a user identifier for that called user to ascertain the corresponding associated location identifier, and if there is a corresponding entry, and performing connection set up on the basis that the destination network for the called user is that communications network which corresponds to that ascertained location identifier; the method being characterised in that:a user-associated relocatable data packages currently located at said communications network are stored in said data storage, and each said location identifier represents the most recent location known to said communications network of the corresponding user-associated relocatable data package; and the method being characterised by the steps of:receiving from a said other communications network a move request in respect of a specified user, and in response, removing that specified user's associated relocatable data package from the data storage, and relocating that data package to said other communications network.