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    Communication system endpoint device with integrated call synthesis capability
    4.
    发明授权
    Communication system endpoint device with integrated call synthesis capability 有权
    具有集成呼叫综合能力的通信系统端点设备

    公开(公告)号：US07313098B2

    公开(公告)日：2007-12-25

    申请号：US10261431

    申请日：2002-09-30

    申请人： Mark J. Bearden ,  Scott Vincent Bianco ,  Lorraine Denby ,  Bengi Karacali ,  Jean Meloche ,  David Thomas Stott ,  Shane M. Sullivan

    发明人： Mark J. Bearden ,  Scott Vincent Bianco ,  Lorraine Denby ,  Bengi Karacali ,  Jean Meloche ,  David Thomas Stott ,  Shane M. Sullivan

    IPC分类号： H04J1/16 ,  G06F15/16

    CPC分类号： H04M3/301 ,  H04J3/0682 ,  H04L1/205 ,  H04L1/24 ,  H04L43/50 ,  H04L65/608 ,  H04L65/80 ,  H04M7/006

    摘要： Techniques are disclosed for improved monitoring and analysis of VoIP communications, multimedia communications or other types of network traffic in a network-based communication system. In accordance with one aspect of the invention, an endpoint device of the system includes an integrated call synthesis capability. More particularly, the endpoint device is configurable into at least a first mode of operation in which the device responds to one or more commands from a testing server of the system directing the device to participate in a synthetic call or other test communication within the system, and a second mode of operation in which the device is utilizable by a system user to establish an actual communication. Other aspects of the invention relating to kernel timestamping and timestamp post-processing provide improved accuracy for measurements such as jitter, loss and delay.

    摘要翻译： 公开了用于改进在基于网络的通信系统中的VoIP通信，多媒体通信或其他类型的网络业务的监视和分析的技术。 根据本发明的一个方面，系统的端点设备包括综合呼叫合成能力。 更具体地，端点设备可配置成至少第一操作模式，其中设备响应来自系统的测试服务器的一个或多个命令，该系统指示设备参与系统内的合成呼叫或其他测试通信， 以及第二操作模式，其中该设备可由系统用户利用以建立实际的通信。 与内核时间戳和时间戳后处理相关的本发明的其它方面为诸如抖动，丢失和延迟的测量提供了改善的精度。

    Method and apparatus for automatic determination of performance problem locations in a network
    5.
    发明授权
    Method and apparatus for automatic determination of performance problem locations in a network 有权
    用于自动确定网络中性能问题位置的方法和装置

    公开(公告)号：US07408885B2

    公开(公告)日：2008-08-05

    申请号：US10643275

    申请日：2003-08-19

    申请人： Lorraine Denby ,  Bengi Karacali ,  Jean Meloche

    发明人： Lorraine Denby ,  Bengi Karacali ,  Jean Meloche

    IPC分类号： H04L12/26

    CPC分类号： H04L43/00 ,  H04L41/0631 ,  H04L41/5003 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/16 ,  H04L43/50

    摘要： A network monitoring and analysis system is configured to include a root cause analysis function that permits the automatic determination of performance problem locations in a network of a communication system comprising a plurality of endpoint devices. Test communications are generated in the system in accordance with a selected pattern, which may be based on a flow matrix, and end-to-end path measurement data is collected utilizing the generated test communications. The end-to-end path measurement data is transformed to produce a plurality of performance indicators comprising a performance indicator for each of a plurality of non-end-to-end paths defined at least in part by the selected pattern.

    摘要翻译： 网络监视和分析系统被配置为包括根本原因分析功能，其允许自动确定包括多个端点设备的通信系统的网络中的性能问题位置。 根据可以基于流矩阵的选定模式在系统中生成测试通信，并且利用生成的测试通信来收集端到端路径测量数据。 端对端路径测量数据被变换以产生多个性能指标，其包括至少部分地由所选模式定义的多个非端到端路径中的每一个的性能指示符。

    Method and apparatus for automatic determination of performance problem locations in a network
    6.
    发明申请
    Method and apparatus for automatic determination of performance problem locations in a network 有权
    用于自动确定网络中性能问题位置的方法和装置

    公开(公告)号：US20050053009A1

    公开(公告)日：2005-03-10

    申请号：US10643275

    申请日：2003-08-19

    申请人： Lorraine Denby ,  Bengi Karacali ,  Jean Meloche

    发明人： Lorraine Denby ,  Bengi Karacali ,  Jean Meloche

    IPC分类号： H04L12/24 ,  H04L12/26 ,  H04L1/00

    CPC分类号： H04L43/00 ,  H04L41/0631 ,  H04L41/5003 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/16 ,  H04L43/50

    摘要： A network monitoring and analysis system is configured to include a root cause analysis function that permits the automatic determination of performance problem locations in a network of a communication system comprising a plurality of endpoint devices. Test communications are generated in the system in accordance with a selected pattern, which may be based on a flow matrix, and end-to-end path measurement data is collected utilizing the generated test communications. The end-to-end path measurement data is transformed to produce a plurality of performance indicators comprising a performance indicator for each of a plurality of non-end-to-end paths defined at least in part by the selected pattern.

    摘要翻译： 网络监视和分析系统被配置为包括根本原因分析功能，其允许自动确定包括多个端点设备的通信系统的网络中的性能问题位置。 根据可以基于流矩阵的选定模式在系统中生成测试通信，并且利用生成的测试通信来收集端到端路径测量数据。 端对端路径测量数据被变换以产生多个性能指标，其包括至少部分地由所选模式定义的多个非端到端路径中的每一个的性能指示符。

    Root cause analysis of network performance based on exculpation or inculpation sets
    7.
    发明授权
    Root cause analysis of network performance based on exculpation or inculpation sets 有权
    基于排除或排除集的网络性能的根本原因分析

    公开(公告)号：US07924733B2

    公开(公告)日：2011-04-12

    申请号：US11536229

    申请日：2006-09-28

    申请人： Akshay Adhikari ,  Lorraine Denby ,  Colin L. Mallows ,  Jean Meloche ,  Balaji Rao

    发明人： Akshay Adhikari ,  Lorraine Denby ,  Colin L. Mallows ,  Jean Meloche ,  Balaji Rao

    IPC分类号： H04J1/16

    CPC分类号： H04L43/00 ,  H04L41/0213 ,  H04L41/0631 ,  H04L41/0677 ,  H04L41/5003 ,  H04L41/5096 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/16

    摘要： Performance problems or other conditions are analyzed in a system comprising a plurality of endpoint devices and an associated centralized or distributed controller. End-to-end measurements are obtained for respective paths through the network, for example, using communications between the endpoint devices. For a given end-to-end measurement obtained for a particular one of the paths, a value of a performance indicator for the path is determined and the performance indicator value is assigned to each of a plurality of links of the path. The determining and assigning operations are repeated for additional ones of the end-to-end measurements, the links are grouped into one or more exculpation or inculpation sets based on how many times a particular performance indicator value has been assigned to each of the links, and the one or more sets are utilized to determine, for example, the location of a performance problem in the network.

    摘要翻译： 在包括多个端点设备和相关联的集中式或分布式控制器的系统中分析性能问题或其他条件。 通过网络获得针对相应路径的端到端测量，例如使用端点设备之间的通信。 对于针对特定路径获得的给定的端到端测量，确定路径的性能指示符的值，并且将性能指标值分配给路径的多个链路中的每一个。 针对附加的端到端测量重复确定和分配操作，基于特定的性能指标值被分配给每个链路多少次，将链路分组成一个或多个排除或者填充集合， 并且使用一个或多个集合来确定例如网络中的性能问题的位置。

    Node merging process for network topology representation
    8.
    发明授权
    Node merging process for network topology representation 有权
    网络拓扑表示的节点合并过程

    公开(公告)号：US07688758B2

    公开(公告)日：2010-03-30

    申请号：US11768442

    申请日：2007-06-26

    申请人： Lorraine Denby ,  Jean Meloche ,  Balaji Sathyanarayana Rao ,  John R. Tuck, Jr.

    发明人： Lorraine Denby ,  Jean Meloche ,  Balaji Sathyanarayana Rao ,  John R. Tuck, Jr.

    IPC分类号： H04L12/28

    CPC分类号： H04L43/0852 ,  H04L41/12

    摘要： Node merging methods and apparatus are disclosed for generating simplified representations of network topology. A first topology representative of a given network is determined, and at least one pair of nodes of the first topology is merged into a single node based on measures associated with respective edges connecting the nodes of the node pair to at least one neighbor node common to that pair. The merging step is repeated for one or more additional pairs of nodes to produce a reduced network topology meeting one or more desired criteria, and a visualization or other representation of the reduced network topology is generated.

    摘要翻译： 公开了用于生成网络拓扑的简化表示的节点合并方法和装置。 确定给定网络的第一拓扑，并且基于与将节点对的节点连接到至少一个相邻节点的相应边缘相关联的度量将第一拓扑的至少一对节点合并到单个节点中 那对 对于一个或多个另外的附加对节点重复合并步骤以产生满足一个或多个期望准则的减小的网络拓扑，并且生成减少的网络拓扑的可视化或其他表示。

    Data compression in a distributed monitoring system
    9.
    发明申请
    Data compression in a distributed monitoring system 有权
    分布式监控系统中的数据压缩

    公开(公告)号：US20080069334A1

    公开(公告)日：2008-03-20

    申请号：US11531910

    申请日：2006-09-14

    申请人： Lorraine Denby ,  Colin L. Mallows ,  Jean Meloche

    发明人： Lorraine Denby ,  Colin L. Mallows ,  Jean Meloche

    IPC分类号： H04M3/00

    CPC分类号： H04L12/2697 ,  H04L43/50

    摘要： A distributed monitoring system comprises a plurality of agents configured for communication with at least one central server. A given one of the agents obtains measurement data, and applies a statistical test to the measurement data. Based on a result of the statistical test, the given agent determines whether or not an update needs to be sent by the agent to the central server. The agent sends the update to the central server if the determination indicates that the update should be sent.

    摘要翻译： 分布式监控系统包括被配置为与至少一个中央服务器进行通信的多个代理。 给定的一个代理获得测量数据，并对测量数据应用统计测试。 基于统计测试的结果，给定代理确定代理是否需要向中央服务器发送更新。 如果确定指示应该发送更新，代理将更新发送到中央服务器。

    Automatic determination of connectivity problem locations or other network-characterizing information in a network utilizing an encapsulation protocol
    10.
    发明授权
    Automatic determination of connectivity problem locations or other network-characterizing information in a network utilizing an encapsulation protocol 有权
    利用封装协议自动确定网络中的连接问题位置或其他网络特征信息

    公开(公告)号：US07583667B2

    公开(公告)日：2009-09-01

    申请号：US11014546

    申请日：2004-12-16

    申请人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell C. Jones ,  Rod D. Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John R. Tuck, Jr.

    发明人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell C. Jones ,  Rod D. Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John R. Tuck, Jr.

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04L45/00 ,  H04L12/4633 ,  H04L12/4675 ,  H04L41/0677 ,  H04L41/145 ,  H04L43/10 ,  H04L43/50 ,  H04L45/20 ,  H04L45/26 ,  H04L69/22

    摘要： Techniques for determining a problem location or otherwise characterizing a network comprising a plurality of processing elements, including at least one processing element associated with performance of a packet encapsulation operation of an encapsulation protocol. The packet encapsulation operation is performed on a test packet to generate an encapsulated packet, the test packet having a time to live (TTL) value and an identifier. In conjunction with performance of the packet encapsulation operation, the TTL value and the identifier of the test packet are copied to a header of the encapsulated packet. The encapsulated packet is transmitted, and a determination is made as to whether a reply packet has been received responsive to transmission of the encapsulated packet. The reply packet, if any, is processed to obtain information utilizable in determining the problem location or otherwise characterizing the network. By way of example, these operations may be repeated, for subsequent test packets with increasing TTL values, until an amount of router hop information sufficient to determine the problem location is obtained.

    摘要翻译： 用于确定问题位置或以其他方式表征包括多个处理元件的网络的技术，包括与执行封装协议的分组封装操作相关联的至少一个处理元件。 在测试分组上执行分组封装操作以生成封装分组，测试分组具有生存时间（TTL）值和标识符。 结合分组封装操作的性能，将TTL值和测试分组的标识符复制到封装分组的报头。 发送封装的分组，并且确定响应于封装分组的传输是否已经接收到应答分组。 处理回复数据包（如果有的话）以获得可用于确定问题位置或以其他方式表征网络的信息。 作为示例，对于具有增加的TTL值的后续测试分组，可以重复这些操作，直到获得足以确定问题位置的路由器跳跃信息的量。