Patent ID: 8705410
Filing Date: 2014-04-22
Classification: H04L

Abstract:
1. A method for conducting a global conference, comprising: a first conference bridge establishing a first conference at the first conference bridge, wherein the first conference at the first conference bridge includes a first communication endpoint; a second conference bridge establishing the first conference at the second conference bridge, wherein the first conference at the second conference bridge includes a second communication endpoint; the first conference bridge establishing a link line between the first conference bridge and the second conference bridge; the first conference bridge sending a first Session Initiation Protocol (SIP) subscribe request for the first conference at the second conference bridge; the second conference bridge sending a second SIP subscribe request for the first conference at the first conference bridge; the first and the second conference bridges conducting the first conference; the first conference bridge receiving a first SIP notification associated with the first conference at the second conference bridge based on the first SIP subscribe request, wherein the first SIP notification is sent based on a change of a state of the first conference at the second conference bridge or a change of state of the second communication endpoint, wherein the first SIP notification includes conference roster information of the second conference bridge; executing a roster application; getting conference roster information of the first conference bridge and the second conference bridge; and the first conference bridge providing the conference roster information of the first and second conference bridges to the first communication endpoint.