Patent ID: 8059792

Claim:
A method for routing a message waiting indicator message, the method comprising: receiving the message waiting indicator message, the message waiting indicator message referencing a telephone number; determining whether the telephone number referenced by the message waiting indicator message is part of a first block of telephone numbers owned by a single network carrier; determining whether the telephone number referenced by the telephone message waiting indicator message is part of a second block of telephone numbers that is shared between a plurality of network carriers; in response to the telephone number being owned by the single network carrier, routing the message waiting indicator message to the single network; and in response to the telephone number being part of the second block of telephone numbers being shared between the plurality of network carriers, determining from the plurality of network carriers a particular network carrier that owns the telephone number routing the message waiting indicator message to a system with routing instructions that reference to the particular network and routing the message waiting indicator message to the particular network that owns the telephone number.