公开(公告)号：US07266091B2

公开(公告)日：2007-09-04

申请号：US10085837

申请日：2002-02-28

申请人： Kundan Singh ,  Gautam Nair ,  Henning Schulzrinne

发明人： Kundan Singh ,  Gautam Nair ,  Henning Schulzrinne

IPC分类号： H04L12/18 ,  H04Q11/00

CPC分类号： H04M3/567 ,  H04M7/006

摘要： A conferencing server is provided for a data network telephony system for facilitating multi-party call conferencing. The conferencing server generally includes a session initiation protocol (SIP) signaling interface and a media conferencing module. The media conferencing module includes a number of selectable media decoders compliant with known media CODEC protocols, such as G.711. A number of media stream queues s are selectively coupled to the media decoders for storing the decoded incoming media streams. A jitter correction processor is provided to compensate for arrival time jitter in the data stored in the media stream queues. A mixer, which receives the jitter corrected data from each of the queues, generates an aggregate conferencing stream of all active participants and generates individual participant conference streams for each active participant in the conference. A number of selectable media encoders are then used to encode the individual participant conference streams in accordance with a media CODEC protocol supported by the respective participant. The encoded participant conference streams are then distributed to the various conference participants via the data network, such as the Internet.

摘要翻译： 为数据网络电话系统提供会议服务器，以便于多方呼叫会议。 会议服务器通常包括会话发起协议（SIP）信令接口和媒体会议模块。 媒体会议模块包括符合已知媒体CODEC协议的多个可选媒体解码器，例如G.711。 多个媒体流队列选择性地耦合到媒体解码器，用于存储解码的传入媒体流。 提供抖动校正处理器来补偿存储在媒体流队列中的数据中的到达时间抖动。 接收来自每个队列的抖动校正数据的混合器生成所有活动参与者的聚合会议流，并为会议中的每个活动参与者生成个体参与者会议流。 然后，使用多个可选的媒体编码器根据由相应参与者支持的媒体编解码器协议对各个参与者会议流进行编码。 编码的参与者会议流然后经由诸如因特网的数据网络分发给各个会议参与者。