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    • 4. 发明授权
    • Method for determining active communication sessions and communication session information server
    • 用于确定主动通信会话和通信会话信息服务器的方法
    • US08700706B2
    • 2014-04-15
    • US12999316
    • 2009-06-05
    • Frank Kowalewski
    • Frank Kowalewski
    • G06F15/16
    • H04L65/403H04L12/1822H04L29/06442H04L65/4061H04N7/152H04N7/155H04W4/10H04W76/45
    • A method for ascertaining active communication sessions may include receiving a request to ascertain active communication sessions by a communication session information server; transmitting respective challenges to determine whether communication sessions are currently active from the communication session information server to at least two communication session servers; receiving respective challenge responses from the at least two communication session servers, which indicate one or more active communication sessions controlled by the respective communication session server or indicate that such communication sessions currently do not exist, by the communication session information server; and transmitting a first response, which indicates one or more active communication sessions controlled by the at least two communication session servers or indicates that such communication sessions currently do not exist, by the communication session information server.
    • 用于确定主动通信会话的方法可以包括:接收由通信会话信息服务器确定主动通信会话的请求; 发送相应的挑战,以确定通信会话当前是从通信会话信息服务器到至少两个通信会话服务器是活动的; 从所述通信会话信息服务器接收来自所述至少两个通信会话服务器的各自的挑战响应,所述至少两个通信会话服务器指示由所述相应通信会话服务器控制的一个或多个主动通信会话或指示所述通信会话当前不存在 以及通过所述通信会话信息服务器发送指示由所述至少两个通信会话服务器控制的一个或多个主动通信会话或指示所述通信会话当前不存在的第一响应。