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Delivering sip-based call services to circuit-switched terminals

  • US 8,243,715 B2
  • Filed: 05/15/2006
  • Issued: 08/14/2012
  • Est. Priority Date: 05/15/2006
  • Status: Active Grant
First Claim
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1. A computer-implemented method for communication in a communication system that includes a circuit-switched network and a packet-switched network, the method comprising:

  • providing a convergence server which connects the circuit-switched and packet-switched networks;

    predefining, in the convergence server, a plurality of service delivery modes having different respective signaling and media path configurations in the circuit-switched and packet-switched networks;

    deploying one or more call services over both the circuit-switched network and the packet switched network using a service platform;

    accepting a request from a calling terminal to place a call in the circuit-switched network;

    determining a list of call services that can be provided to the calling terminal;

    responsively to the request, for each service defined for the call, sending a trigger to the convergence server, wherein each trigger comprises a service identifier (service ID) indicating the type of service to be provided;

    selecting a service delivery mode, by the convergence server, from the plurality of service delivery modes, based on the service ID;

    establishing signaling and media paths for the call via the circuit-switched and packet-switched networks in accordance with the respective signaling and media path configurations of the selected service delivery mode, wherein in anintelligent network (IN) mode the convergence server invokes an SIP application server to provide each service defined in the call and establishes a media path between the calling terminal and a called terminal in the circuit-switched network,IP multimedia subsystem (IMS)-controlled mode the convergence server establishes an initial media path connecting the calling terminal to the SIP application server and then establishes a subsequent media path between the calling terminal and the called terminal using a media gateway (MGW), andearly media mode the convergence server establishes an initial media path connecting the calling terminal to the SIP application server via the media gateway and then establishes a subsequent media path between the calling terminal and the called terminal in the circuit-switched network; and

    providing the services defined for the call from the service platform to the call using the established signaling and media paths.

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