Patent ID: 10212193

Abstract:
A method may include receiving, at a serving call session control function (S-CSCF) device, from a home subscriber server (HSS), a subscriber profile that includes a first subscription state associated with a user device. The first subscription state is one of a plurality of subscription states in addition to barred and not barred. The method includes routing messages to at least one of a plurality of application server devices based on at least one initial filter criteria (iFC) associated with the first subscription state. The method also includes receiving, at the S-CSCF device and from the HSS, a subscription state change to a second subscription state from the HSS, wherein the second subscription state is one of the plurality of subscription states. The method further includes identifying at least one iFC associated with the second subscription state, and routing messages to at least one of the plurality of application servers based on the at least one iFC associated with the second subscription state.