METHOD AND SYSTEM FOR TRANSFERRING CONTROL OF A CONFERENCE BRIDGE
First Claim
1. A method of transferring control of a conference bridge during an ongoing conference call, comprising steps of:
- providing control of a conference bridge to a first terminal by a Media Resource Function (MRF);
receiving a request by the MRF from the first terminal to transfer control of the conference bridge to a second terminal;
upon receiving an acceptance of control of the conference bridge from the second terminal prior to the first terminal severing control of the conference bridge, transferring control of the conference bridge to the second terminal; and
continuing the ongoing conference call through the conference bridge until no terminal has control of the conference bridge, wherein each terminal is an IP Multimedia Core Network Subsystem (IMS) enabled terminal.
1 Assignment
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Accused Products
Abstract
A conference calling system enables transfer of control of a conference bridge. The transferor terminal has an option to transfer control of the conference bridge to a transferee terminal. The transferee terminal has an option to accept or reject control of the conference bridge. When the transferee terminal accepts control prior to the transferor terminal severing control, the control of the conference bridge is transferred to the transferee terminal. However, when the transferee terminal rejects or does not accept within a predetermined time the control of the conference bridge, the transferor terminal is provided an option to transfer control of the conference bridge to alternate terminals, one terminal at a time, until an alternate terminal accepts control or the transferor terminal severs control of the conference bridge. As long as a terminal has control of the conference bridge, the conference bridge is not severed.
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Citations
23 Claims
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1. A method of transferring control of a conference bridge during an ongoing conference call, comprising steps of:
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providing control of a conference bridge to a first terminal by a Media Resource Function (MRF); receiving a request by the MRF from the first terminal to transfer control of the conference bridge to a second terminal; upon receiving an acceptance of control of the conference bridge from the second terminal prior to the first terminal severing control of the conference bridge, transferring control of the conference bridge to the second terminal; and continuing the ongoing conference call through the conference bridge until no terminal has control of the conference bridge, wherein each terminal is an IP Multimedia Core Network Subsystem (IMS) enabled terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A conference bridge maintenance and transfer system in an IP Multimedia Core Network Subsystem (IMS), comprising:
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a Telephony Application Server (TAS) for receiving requests from a transferor terminal to transfer control of a conference bridge to a transferee terminal; and a Media Resource Function (MRF) for interpreting messages from the TAS and facilitating the transfer of the control of the conference bridge from the transferor terminal to the transferee terminal. - View Dependent Claims (14, 15)
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16. A method of transferring control of a conference bridge using a session initiation protocol (SIP) REFER infrastructure, comprising steps of:
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receiving a REFER request message from a transferor terminal at a Telephony application server (TAS) to transfer control of the conference bridge from the transferor terminal to a transferee terminal; interpreting a body of the REFER request message from the transferor terminal to determine the transferee identification and forwarding a modified REFER message with the transferee identification to a Media Resource Function Controller (MRF), wherein the interpreting of the body of the REFER request message and the forwarding of the modified REFER message to the MRF is performed by the TAS; interpreting the modified REFER message from the TAS and sending an acknowledgment message to the TAS that the transferee terminal is to have control over the conference bridge, wherein the interpreting the modified REFER message and sending an acknowledgment to the TAS is performed by the MRF; sending an acknowledgment message to the transferor terminal by the TAS, indicating that transfer of the control of the conference bridge is successful; and sending a notification to the transferee terminal by the MRF, whereby indicating that transfer of the control of the conference bridge is successful. - View Dependent Claims (17, 18, 19)
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20. A method of transferring control of a conference bridge using a session initiation protocol (SIP) INVITE infrastructure, comprising steps of:
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receiving an INVITE request message from a transferor terminal at a Telephony application server (TAS) to transfer control of the conference bridge from the transferor terminal to a transferee terminal, wherein the INVITE message includes a history and diversion information in a header; interpreting the history and the diversion information in the header of the INVITE request message from the transferor terminal to determine the transferee identification and forwarding a modified INVITE message with the transferee identification to a Media Resource Function Controller (MRF), wherein the interpreting of the header of the INVITE request message and the forwarding of the modified INVITE message to the MRF is performed by the TAS; interpreting the modified INVITE message from the TAS and sending an acknowledgment message to the TAS that the transferee terminal is to have control over the conference bridge, wherein the interpreting the modified INVITE message and sending an acknowledgment to the TAS is performed by the MRF; sending an acknowledgment message to the transferor terminal by the TAS, indicating that transfer of the control of the conference bridge is successful; and sending a notification to the transferee terminal by the MRF, indicating that transfer of the control of the conference bridge is successful. - View Dependent Claims (21, 22, 23)
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Specification