公开(公告)号：EP1056256A2

公开(公告)日：2000-11-29

申请号：EP00304494.8

申请日：2000-05-26

申请人： Siemens Information and Communication Networks, Inc. ,  Radvision Ltd

发明人： Shaffer, Shmuel ,  Shalev, Uzi ,  Ruppin, Naomi Frid ,  Beyda, William J.

IPC分类号： H04L29/06

CPC分类号： H04L65/1009 ,  H04L29/06027 ,  H04L65/1043 ,  H04L65/607 ,  H04M3/08 ,  H04M3/12 ,  H04M7/006 ,  H04Q3/0045

摘要： An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier to a secondary gatekeeper (108b). The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a call via a secondary gatekeeper (108b). However, no media channels are established for this back up call. As the secondary control unit (110b) receives signaling from the secondary gatekeeper (108b), it checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken. If the call signaling with the primary gatekeeper (108a) fails, the secondary control unit (110b) takes over communication.

摘要翻译： 根据本发明实施例的H.323客户终端（102）采用主H.323控制单元或状态机（110a，110b）。 主控制单元（110a）向初级网守（108a）发送信令消息，并且触发辅助控制单元（110b）向具有辅助网守（108b）的消息发送具有适当的相关标识符的消息。 主控制单元（110a）根据标准H.323协议建立呼叫。 次级控制单元（110b）还通过辅助网守（108b）建立呼叫。 但是，此备份呼叫没有建立媒体频道。 当辅助控制单元（110b）接收来自辅助网守（108b）的信令时，它利用主控制单元（110a）来检查呼叫的状态。 如果主控制单元（110a）上的呼叫信令正常进行，则不采取进一步的动作。 如果与主网守（108a）的呼叫信令失败，则次级控制单元（110b）接管通信。

公开(公告)号：EP1056256A3

公开(公告)日：2002-05-15

申请号：EP00304494.8

申请日：2000-05-26

申请人： Siemens Information and Communication Networks, Inc. ,  Radvision Ltd

发明人： Shaffer, Shmuel ,  Shalev, Uzi ,  Ruppin, Naomi Frid ,  Beyda, William J.

IPC分类号： H04L29/06 ,  H04M7/00

CPC分类号： H04L65/1009 ,  H04L29/06027 ,  H04L65/1043 ,  H04L65/607 ,  H04M3/08 ,  H04M3/12 ,  H04M7/006 ,  H04Q3/0045

摘要： An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier to a secondary gatekeeper (108b). The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a call via a secondary gatekeeper (108b). However, no media channels are established for this back up call. As the secondary control unit (110b) receives signaling from the secondary gatekeeper (108b), it checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken. If the call signaling with the primary gatekeeper (108a) fails, the secondary control unit (110b) takes over communication.

公开(公告)号：EP1056256B1

公开(公告)日：2004-09-29

申请号：EP00304494.8

申请日：2000-05-26

申请人： Siemens Information and Communication Networks, Inc. ,  Radvision Ltd

发明人： Shaffer, Shmuel ,  Shalev, Uzi ,  Ruppin, Naomi Frid ,  Beyda, William J.

IPC分类号： H04L29/06 ,  H04M7/00

CPC分类号： H04L65/1009 ,  H04L29/06027 ,  H04L65/1043 ,  H04L65/607 ,  H04M3/08 ,  H04M3/12 ,  H04M7/006 ,  H04Q3/0045

公开(公告)号：EP0981237B1

公开(公告)日：2005-06-22

申请号：EP99112086.6

申请日：1999-06-23

申请人： Siemens Information and Communication Networks, Inc.

发明人： Shaffer, Shmuel ,  Beyda, William ,  Skrzynski, Mark ,  Gheorghiu, Florin M.

IPC分类号： H04M3/50 ,  H04M3/51 ,  H04M3/22

CPC分类号： H04M3/2281 ,  H04M3/51 ,  H04M3/5175 ,  H04M2201/40

公开(公告)号：EP0892540B1

公开(公告)日：2004-09-15

申请号：EP98113268.1

申请日：1998-07-16

申请人： Siemens Information and Communication Networks Inc.

发明人： Shaffer, Shmuel ,  Beyda, William J.

IPC分类号： H04M3/50 ,  H04M3/42 ,  H04M3/533

CPC分类号： H04M3/53325

公开(公告)号：EP0984558A3

公开(公告)日：2003-11-26

申请号：EP99114594.7

申请日：1999-07-26

申请人： Siemens Information and Communication Networks Inc.

发明人： Shaffer, Shmuel ,  Beyda, William

IPC分类号： H03M7/46 ,  G06F17/30

CPC分类号： G06F17/30017

摘要： The present invention relates to a system and method for automatic synchronization in multimedia presentations. According to an embodiment of the present invention, when a data stream is compressed, delay which would normally be compressed out is replaced by a delay token which indicates a length of time of the delay. When a data stream is decompressed and presented, the delay tokens may either be used or ignored. In particular, when data streams are presented together in a multimedia presentation the delay tokens may be used to synchronize the various data streams of the multimedia presentation. Otherwise, when data streams are presented alone without the other data streams of a multimedia presentation or are not part of a multimedia presentation, the delay tokens may be ignored. In such cases when the delay token is ignored, any data stream delay is simply skipped since there is no need to synchronize with other data streams.

公开(公告)号：EP0966175A3

公开(公告)日：2003-09-17

申请号：EP99110161.9

申请日：1999-05-25

申请人： Siemens Information and Communication Networks, Inc.

发明人： Shaffer, Shmuel ,  Beyda, William

IPC分类号： H04Q11/04 ,  H04L29/06 ,  H04L12/64

CPC分类号： H04Q11/0421 ,  H04M7/006 ,  H04Q2213/13034 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/13166 ,  H04Q2213/13174 ,  H04Q2213/13204 ,  H04Q2213/1329 ,  H04Q2213/13352 ,  H04Q2213/13389

摘要： A method and apparatus for transmitting delay-sensitive data over a packet-based network involve converting the delay-sensitive data into two versions for transfer through the network with one version of the data being used to supplement the other version of the data in the event that packets are delayed or lost. In a preferred embodiment, real time voice conversation data is compressed using two different compression algorithms, where one version is more highly compressed and of a lower quality than the other. The highly compressed data is sent before corresponding packets from the less compressed data and the highly compressed packets are buffered at the receiving device to be utilized to regenerate any data segments from the less compressed packets that are lost or delayed during transmission. Sending dual versions of the same data allows the lower quality voice segment to be used as a backup in places where the high quality voice segments are lost.

公开(公告)号：EP0951165A3

公开(公告)日：2003-07-30

申请号：EP99107003.8

申请日：1999-04-09

申请人： Siemens Information and Communication Networks Inc.

发明人： Beyda, William J. ,  Shaffer, Shmuel

IPC分类号： H04M3/50 ,  H04M7/12 ,  H04L12/58 ,  H04M3/53 ,  H04M3/533

CPC分类号： H04M3/5307 ,  H04L51/00 ,  H04L51/066 ,  H04L51/36 ,  H04M3/487 ,  H04M7/12 ,  H04M2201/60

摘要： A system (100) that employs media "blending" to notify a multi-media user of the use of one or more default configurations and provides an opportunity to record or reconfigure the item for the future. In particular, a system (100) according to the present invention monitors usage of a default or other predetermined setting and provides a message to the user indicative of its usage. Once the user has been notified of the usage, the user is given the option of reconfiguring from the default setting.

摘要翻译： 使用媒体“混合”通知多媒体用户使用一个或多个默认配置的系统（100），并提供记录或重新配置未来的项目的机会。 具体地，根据本发明的系统（100）监视默认或其他预定设置的使用，并向用户提供指示其使用的消息。 一旦用户被通知使用，用户就可以从默认设置中选择重新配置。

公开(公告)号：EP1043894A3

公开(公告)日：2003-06-04

申请号：EP00302272.0

申请日：2000-03-21

申请人： Siemens Information and Communication Networks Inc.

发明人： Beyda, William ,  Shaffer, Shmuel

IPC分类号： H04N7/15

CPC分类号： H04L12/1822 ,  H04N7/15

摘要： A conferencing server 22 and methods for use with a video conferencing system 20 for multimedia collaborative conferencing. The conferencing server 22 includes at least two data ports 69 and at least two video graphics input ports 67 , each pair of data and video graphics input ports for connecting to one of at least two computers 72 belonging to a participant located in a local video conference room. The conferencing server 22 also includes a video graphics output port 77 for connecting to a local input port 40 of the video conferencing system 22 . The conferencing server 22 includes a control unit 50 that is selectively programmed to couple a first of the at least two video graphics input ports 67 to the video graphics output port 77 for allowing the transfer of information from the computer connected to the first of the at least two video graphics input ports to the video conferencing system 20 . In some specific embodiments, the video graphics input and output ports are SVGA input and output ports.

公开(公告)号：EP1043880A3

公开(公告)日：2003-05-02

申请号：EP00302270.4

申请日：2000-03-21

申请人： Siemens Information and Communication Networks Inc.

发明人： Shaffer, Shmuel ,  Beyda, William J.

IPC分类号： H04M3/56

CPC分类号： H04M3/562 ,  H04M3/56 ,  H04M3/567 ,  H04M7/006

摘要： Methods, apparatus and computer system for efficiently utilizing a conference bridge capacity in order to support a multipoint conference call are described. Each conference bridge 212 within multiple communication groups 202a-n determines which local communication unit 206-210 is a dominant local communication unit, quantizes that dominant local communication unit's signal, and transmits the quantized signal of the dominant local communication unit via signalling channels to the other conference bridges. Each conference bridge 212 then compares the various quantized signals of the various dominant local communication units to determine an overall dominant communication unit of the multipoint conference. Then the signal of the overall dominant communication unit is then transmitted to all communication units 206-210 participating in the conference call in various ways for different embodiments of the invention.