Patent ID: 6519454
Filing Date: 2003-02-11
Classification: H04W

Abstract:
A wireless communications system serving an incoming call to a mobile subscriber unit that is located within a region served by a serving mobile switching center, said incoming call connected to said mobile subscriber unit through an originating mobile switching center, said originating mobile switching center and said serving mobile switching center connected by an inter-mobile switching center telephone facility, said wireless communications system comprising:means for said serving mobile switching center receiving a request for a call transfer of said incoming call to a designated party from said mobile subscriber unit; means, responsive to said means of receiving a request from said mobile subscriber unit, for said serving mobile switching center sending a query to a home location register to determine subsequent action; means, responsive to said means for said serving mobile switching center sending said query, for said home location register sending an instruction to said originating mobile switching center to redirect said incoming call to said designated party; means, responsive to said means for said home location register sending said instruction, for said originating mobile switching center causing a public switching telephone network to establish a telephone facility to said designated party; means, responsive to said causing means, for said originating mobile switching center connecting said incoming call to said designated party over said telephone facility; means, responsive to said connecting means, for said originating mobile switching center and said serving mobile switching center removing said intermobile switching center telephone facility; and means, responsive to said removing means, for said serving mobile switching center to disconnect said incoming call to said mobile subscriber unit.