Patent ID: 7190959

Claim:
A method for processing messages in a mobile communications network, the method comprising: at a first network node: (a) receiving a first message relating to a communication in a mobile communications network, the first message including a called directory number; (b) performing a lookup in a first database based on the called directory number to determine whether a called party has been ported out of a first network and to determine a migration status of the called party; (c) in response to determining that the called party has been ported out of the first network, formulating a first reply message including first routing information from the first database, the first routing information indicating a second network to which the called party has been ported; and (d) in response to determining that the called party has not been ported out, formulating a second reply message including second routing information from the first database, the second routing information corresponding to the determined migration status.