Patent ID: 7929953

Claim:
A method for controlling traffic of an inbound roaming mobile station between a first Visiting Public Mobile Network (VPMN), a second VPMN and a Home Public Mobile Network (HPMN), the method comprising: detecting a possible change in registration of the inbound roaming mobile station upon receipt of a first registration cancellation message of one or more registration cancellation messages at the first VPMN from the HPMN; attempting to redirect the traffic to the first VPMN by sending one or more registration messages from the first VPMN to the HPMN subsequent to receipt of the one or more registration cancellation messages from the HPMN, wherein for each registration cancellation message received, one or more registration messages are sent within a first pre-defined interval of time (T0) until one registration message is recorded as a successful transaction, wherein for the one or more registration cancellation messages received in current attempt to redirect the inbound roaming mobile station to the first VPMN, the one or more registration messages are sent within one of a second pre-defined interval of time (T1) and a threshold number of times to attempt re-registration.