Patent ID: 7995591

Claim:
A gateway processing a phone call between a user of an IP client and another user attached to a mobile network wherein said user of said IP client subscribes to mobile services provided by a mobile service provider, said gateway implemented using computer readable code stored in a non-transitory storage, said software adjunct to a traditional softswitch, said storage storing: computer readable program code to implement said gateway's processing, said computer readable program code comprising: computer readable program code implementing an IP Phone server software component receiving registration and signaling messages from said IP client originating said phone call; computer readable program code implementing a Mobility Control software component updating a home location register (HLR) to indicate the location of said IP client; and computer readable program code implementing a Service Control and Call Control software component handling said phone call originated by said IP client by directly communicating with a service control point (SCP) of said mobile network via a Visitor Location Register (VLR)/Mobile Switching Center (MSC) by sending an Intelligent Network Application Part (INAP) message to said SCP thereby making said IP client behave like a mobile client of said mobile service provider.