Method and apparatus for providing conference call announcement using SIP signalling in a communication system
First Claim
1. A method for use by a caller terminal in setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including a conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, the method comprising the caller terminal signaling according to session initiation protocol a call setup communication to the callee terminal either via the conference server or directly, the caller terminal including in the call set up communication an indication that the call being set up is a conference call and also including in the call setup communication either a group document indicating possible participants in the conference call or a reference to the group document, wherein if the caller terminal provides the call setup communication to the callee terminal via the conference server then the conference server communicates to the callee terminal either the group document or a reference to the group document.
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Accused Products
Abstract
A method and corresponding equipment for setting up a conference call via a communication network that uses session initiation protocol (SIP) signalling for call setup, the method including steps (E1a E2a E3a E4a) of providing during the call setup signalling to a subscriber invited to participate in the conference call an indication that the call is a conference call and including in the call setup signalling a reference to a group document indicating information about the conference call, such as the other invited participants, or including the group document itself.
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Citations
19 Claims
- 1. A method for use by a caller terminal in setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including a conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, the method comprising the caller terminal signaling according to session initiation protocol a call setup communication to the callee terminal either via the conference server or directly, the caller terminal including in the call set up communication an indication that the call being set up is a conference call and also including in the call setup communication either a group document indicating possible participants in the conference call or a reference to the group document, wherein if the caller terminal provides the call setup communication to the callee terminal via the conference server then the conference server communicates to the callee terminal either the group document or a reference to the group document.
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17. A system, comprising a conference server functioning as a signaling node for enabling a conference call and also including a group server for holding and making accessible group documents indicating members of a group, wherein the conference server, upon receiving from a caller terminal prefatory to a call setup communication a communication including a group document indicating possible participants in the conference call or a reference to the group document, provides to a callee terminal the call setup communication including either the group document or the reference to the group document.
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18. A computer program product comprising:
- a computer readable storage structure embodying computer program code thereon for execution by a computer processor in a caller terminal in setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including a conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, with said computer program code comprising;
computer program code for causing the computer processor of the caller terminal to provides according to session initiation protocol signaling a call setup communication to the callee terminal either via the conference server or directly, wherein if the caller terminal provides the call setup communication to the callee terminal via the conference server then the conference server communicates to the callee terminal either a group document indicating possible participants in the conference call or a reference to the group document; wherein in signaling to the callee terminal the call setup communication, the caller terminal includes in the call setup communication an indication that the call being set up is a conference call and also includes in the call setup communication either a group document indicating possible participants in the conference call or a reference to the group document.
- a computer readable storage structure embodying computer program code thereon for execution by a computer processor in a caller terminal in setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including a conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, with said computer program code comprising;
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19. A computer program product comprising:
- a computer readable storage structure embodying computer program code thereon for execution by a computer processor in a conference server in communication with a caller terminal setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including the conference server, the conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, with said computer program code comprising;
computer program code for causing the computer processor of the conference server to signal according to session initiation protocol a call setup communication to the callee terminal; wherein in signaling to the callee terminal the call setup communication, the conference server includes in the call setup communication an indication that the call being set up is a conference call and also includes in the call setup communication either a group document indicating possible participants in the conference call or a reference to the group document.
- a computer readable storage structure embodying computer program code thereon for execution by a computer processor in a conference server in communication with a caller terminal setting up a conference call for a voice call or messaging session to a callee terminal, the caller terminal subscribed to a component of a communication network including the conference server, the conference server functioning as a signaling node for the conference call, the communication network using session initiation protocol signaling for call set up, with said computer program code comprising;
Specification