Patent ID: 9258758
Filing Date: 2016-02-09
CPC Classification: H04M,H04W

Claim Text:
1. A method comprising: receiving, by a roaming server from a server in a home network, information relating to a call that has been placed to a called number by a roaming user of the home network; transmitting, by the roaming server to the server in the home network, a substitute number for the called number, in response to the receiving of the information, wherein the substitute number is associated with a service center; maintaining, by the roaming server, a record of an association between the substitute number and the called number; receiving, by the roaming server via out-of-band signaling, from the service center and after the transmitting of the substitute number, information that is sufficient to identify the substitute number; and transmitting, by the roaming server to the service center, the called number i) in response to the receiving of the information that is sufficient to identify the substitute number and ii) based on the association between the substitute number and the called number.