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Systems and methods for providing an intelligent network (IN) service to transparently establish a mid-call conference without requiring an intermediate hold state

  • US 6,539,219 B1
  • Filed: 10/06/1999
  • Issued: 03/25/2003
  • Est. Priority Date: 10/06/1999
  • Status: Expired due to Term
First Claim
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1. A method for providing an Intelligent Network (IN) service to transparently establish a mid-call conference using a Mobile Station (MS) while said MS is communicating with a second telephony device, said method comprising the steps of:

  • querying a Home Location Register (HLR) for subscriber information associated with said MS, said subscriber information identifying whether said IN service is to be provided to said MS;

    sending an IN service activation request to a Service Control Point (SCP);

    receiving a Prompt&

    Collect_User_Information command from said SCP, said command instructing said MSC to monitor said control channel for the transmission of dialed digits from said MS monitoring in a Mobile-services Switching Center (MSC) for the transmission of dialed digits over a control channel associated with said MS, said dialed digits identifying a third telephony device;

    sending an acknowledgment message to said SCP, said acknowledgment message including said dialed digits received over said control channel associated with said MS;

    receiving a request from said SCP to establish a call connection to said third telephony device, said request including said dialed digits;

    establishing a call connection to said third telephony device; and

    joining said third telephony device in conference with said MS and said second telephony device, thereby establishing a conference call between said MS and said first and second telephony devices without requiring an intermediate hold state of an existing call connection between said MS and said second telephony device.

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