Signaling method for internet telephony
First Claim
Patent Images
1. A method for communicating via a conference bridge, the method comprising:
- receiving, at at least a first party, an invitation message from a second party, the invitation message including an identifier of the conference bridge, the invitation message being a session initiation protocol (SIP) message;
sending, from at least the first party to the conference bridge, a request to establish communication with the conference bridge, the request including the identifier identifying the conference bridge; and
establishing communication between the first party and the conference bridge in response to the request;
whereinthe identifier is a URI.
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Accused Products
Abstract
A method for creating, modifying, and terminating connections between Internet end systems, particularly, although not exclusively, for Internet telephony communication. The method relies on several request messages sent between a client and a server and the response messages sent back in response. Each request and response message may contain one or more header fields which modify or more uniquely link the messages with a given connection. On this basis, advanced telephony services, such as call forwarding, call transferring, and multiparty conferencing are provided.
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Citations
32 Claims
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1. A method for communicating via a conference bridge, the method comprising:
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receiving, at at least a first party, an invitation message from a second party, the invitation message including an identifier of the conference bridge, the invitation message being a session initiation protocol (SIP) message; sending, from at least the first party to the conference bridge, a request to establish communication with the conference bridge, the request including the identifier identifying the conference bridge; and establishing communication between the first party and the conference bridge in response to the request;
whereinthe identifier is a URI. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for joining an existing multi-party conference call between at least two participating parties using a conference bridge, the method comprising:
sending, from the conference bridge to a first party, a first request message to join the existing multi-party conference, the first request message including an identifier identifying the first party, and the first request message being a session initiation protocol (SIP) message;
whereinthe identifier is a URI. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. In a computer network, a method for adding a first party to an existing bridged conference between at least two second parties, the method comprising:
sending, from a second party to a bridge over which the bridged conference is being held, a first instruction message instructing the bridge to add the first party to the existing bridged conference and instructing the bridge to send a first request message to the first party, the first request message requesting that the first party establish a communication connection with the bridge for joining the first party to the existing bridged conference, the first instruction message and the first request message being session initiation protocol (SIP) messages;
whereinthe first instruction message includes a first identifier identifying the bridge, and the first identifier is a URI. - View Dependent Claims (26)
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27. In a computer network, a method for adding a first party to an existing bridged conference between at least two second parties, the method comprising:
receiving, at a bridge over which the bridged conference is being held, a first instruction message from a second party, the first instruction message instructing the bridge to add the first party to the existing bridged conference and instructing the bridge to send a first request message to the first party, the first request message requesting that the first party establish a communication connection with the bridge for joining the first party to the existing bridged conference, the first instruction message and the first request message being session initiation protocol (SIP) messages;
whereinthe first instruction message includes a first identifier identifying the bridge, and the first identifier is a URI. - View Dependent Claims (28)
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29. In a computer network, a method for adding a first party to an existing bridged conference between at least two second parties over a conference bridge, the method comprising:
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sending, from a second party to the first party, a first request message requesting that the first party establish a communication connection with the bridge for joining the existing bridged conference, the first request message including a first identifier identifying the bridge and a second identifier identifying the second party having sent the first request message, the first request message being a session initiation protocol (SIP) message; and communicating with the first party as part of the existing bridged conference;
whereinthe first identifier is a URI.
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30. In a computer network, a method for adding a first party to an existing bridged conference between at least two second parties over a conference bridge, the method comprising:
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receiving, at the first party, a first request message from a second party, the first request message requesting that the first party establish a communication connection with the bridge for joining the existing bridged conference, the first request message including a first identifier identifying the bridge and a second identifier identifying the second party having sent the first request message, the first request message being a session initiation protocol (SIP) message; and communicating with the second party as part of the existing bridged conference;
whereinthe first identifier is a URI.
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31. A method by which a first party participating in a network conference with a plurality of second parties invites a conference bridge into the conference so as to establish a bridged conference, comprising the steps of:
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having the first party establish a communication connection with the conference bridge; having the first party identify each second party to the conference bridge; having the conference bridge instruct each second party to communicate with the conference bridge in place of the remaining second parties;
whereinsaid step of having the conference bridge instruct each second party to communicate with the conference bridge in place of the remaining second parties includes, having the conference bridge send a first INVITE request message to each second party so as to establish a communication connection with each second party, each first INVITE request message including a REPLACES header field acting to instruct each second party to replace the communication connection between the second party and the first party with the communication connection established between the second party and the conference bridge, having the second party respond to the first INVITE request message sent by the conference bridge so as to indicate acceptance or rejection of the establishment of a communication connection between the second party and the conference bridge, and for each accepting second party, having the conference bridge send a second INVITE request message to each remaining second party besides the accepting second party, the second INVITE request message containing a REPLACES header field containing the accepting second party and acting to cause each remaining second party to establish a communication connection with the conference bridge and terminate a communication connection with the accepting second party. - View Dependent Claims (32)
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Specification