Granted Patent B2

US 7,570,754 · App. 10/858,989 · Granted Aug 4, 2009

Abstract

Claims (22)

1. A method of routing a call to a called party having a home wireless communications network comprising:

the called party providing different called-party-preferred long distance carriers for routing calls to different called party locations, each long distance carrier being a different communications network than the called party's home network and the visited network with a gateway switch providing entry for calls routed from the called party's home network into the associated long distance carrier's network;

the called party roaming and communicating via a visiting MSC at a called party location;

receiving an incoming call for the called party at the called party's home wireless communications network, the network including a called party's home mobile switching center (HMSC);

determining called party location information including the called party location;

the HMSC sending an inquiry for the called-party-preferred long distance carrier provided by the called party for routing calls to the visiting MSC at the called party location;

the HMSC receiving identification of the called-party-preferred long distance carrier provided by the called party for the called party location in response to the inquiry; and

routing the call from the home wireless communications network to the visiting MSC and the called party using the selected called-party-preferred long distance carrier via the selected called-party-preferred long distance carrier's gateway switch.

2. The method defined in claim 1 further comprising:

sending an inquiry for called party location information to the Home Location Register (HLR); and

receiving the called party location information from the HLR.

3. The method defined in claim 1 further comprising:

selecting a plurality of long distance carriers preferred by the called party for routing incoming calls made to the called party location over different legs of the call route; and

routing the call to the called party using the selected long distance carriers.

4. The method defined in claim 1 wherein the sending the inquiry includes sending the inquiry to a Long Distance Carrier Selection Database (LDCSDB), the inquiry including the called party location.

5. The method defined in claim 1 wherein the sending the inquiry includes sending the inquiry to a Long Distance Carrier Selection Database (LDCSDB) and further comprising:

the LDCSDB sending a called party location inquiry to a Home Location Register; and

the LDCSDB receiving called party location information from the HLR.

6. A system for routing a call to a called party having a home wireless communications network and roaming thereby communicating via a visiting MSC, the system comprising:

a Long Distance Carrier Selection Database (LDCSDB) for storing different called-party-preferred long distance carriers for different called party locations and for routing incoming calls made to a called party location over different legs of the call route, each long distance carrier being a different communications network than the called party's home network with a gateway switch providing entry for calls from the called party's home network into the associated long distance carrier's network;

a Home Mobile Switching Center (HMSC) in the called party's home wireless communications network receiving an incoming call for the called party, the HMSC sending an inquiry for the called-party-preferred long distance carrier for the called party location, receiving in response to the inquiry identification of a selected called-party-preferred long distance carrier for routing calls to the called party location, and routing the call to the selected called-party-preferred long distance carrier gateway switch for subsequent routing by the called-party-preferred long distance carrier to the visiting MSC; and

means for selecting a plurality of called-party-preferred long distance carriers used for routing an incoming call made to the called party location over different legs of the call route, wherein the HMSC routes the incoming call to the called party using the selected plurality of called-party-preferred long distance carriers via the selected plurality of called-party-preferred long distance carrier's gateway switches.

Assignments (8)