Patent ID: 6768793
Filing Date: 2004-07-27
Classification: H04M,H04Q

Abstract:
A method of operating a communication system, the method comprising:receiving a call into a switching system; processing the call in the switching system to generate a query message; transmitting the query message from the switching system; receiving the query message into a service control point (SCP); processing the query message in the SCP to select first routing information for the call; generating a first response message in the SCP that includes the first routing information; assigning an identifier for the call, wherein the identifier indicates which device is storing context information for the call; transmitting the first response message that includes the identifier; receiving the first response message in the switching system; processing the first response message in the switching system and routing the call to a telecommunications resource based on the first routing information; providing the identifier for the call to the telecommunications resource to enable the telecommunication resource to locate which device is storing the context information for the call; receiving a transfer message in the SCP from the telecommunications resource after the telecommunications resource has provided a service to the call; processing the transfer message in the SCP to select second routing information; generating and transmitting a second response message that includes the second routing information; receiving the second response message in the switching system; processing the second response message in the switching system to disconnect the telecommunications resource; and extending the call in the switching system over a new connection based on the second routing information.