Patent ID: 7660580

Claim:
A system for implementing call control services for an inbound roamer, the system comprising: a control node to implement the call control services in response to an initiation request; a service node to send a terminating customized applications for mobile network enhanced logic subscription information (T-CSI) for a called number in response to a routing request for the called number, wherein the T-CSI contains an address pointing to the control node; a switching center to send the routing request for the called number and the initiation request, wherein the called number is present in a call received from the inbound roamer and the called number satisfies pre-determined criteria; and a tracking unit for creating a roamer database for the inbound roamer by monitoring transactions of the inbound roamer between a visited public land mobile network visited location register (VPLMN VLP) and a home public land mobile network home location register (HPLMN HLR), wherein the transactions are concurring to a mobile application part (MAP) protocol; wherein the tracking unit creates the roamer database including one or more fields for the inbound roamer selected from a group comprising a Mobile Station International Subscriber Directory Number (MSISDN), an inbound roamer international mobile subscriber identity (IMSI), an Originating Customized Applications for Mobile Network Enhanced Logic Subscription Information (O-CSI) for the inbound roamer, Call forwarding information, a Visiting Mobile Switching Centre (VMSC), Operator Determined Barring (ODB), Supplementary Services (SS), visited mobile switching center (VMSC) and a Visiting Location Register (VLR).