Patent ID: 6324396
Filing Date: 2001-11-27
Classification: H04Q,H04W

Abstract:
A method for providing a calling party number to a called party, said calling party number being associated with a roaming mobile station in a visited public land mobile network (V-PLMN) subscribing to a home public land mobile network (H-PLMN), said method comprising the steps of:receiving, at said V-PLMN, a request from said roaming mobile station to establish a call to said called party;transmitting, from said V-PLMN, said calling party number associated with said roaming mobile station to a service control point (SCP);storing said calling party number at said service control point (SCP);routing the call without the calling party number from the V-PLMN to a switching point serving the called party;querying the SCP, by the serving switching point, for the calling party number;transmitting said calling party number from said SCP to the switching point serving said called party in response to said querying step;delivering the call by the serving switching point to the called party; andforwarding said calling party number from the serving switching point to said called party.