公开(公告)号：US09807126B1

公开(公告)日：2017-10-31

申请号：US15439556

申请日：2017-02-22

Applicant: METASWITCH NETWORKS LTD.

Inventor： Salem Amin Al-Damluji ,  George Malcolm Gilbert

IPC: G06F15/16 ,  H04L29/06

CPC classification number: H04L65/1006 ,  H04L65/105 ,  H04L69/03

Abstract: Measures, including methods, apparatus and computer programs, for use in operating a network node. At the network node a database of session description protocol (SDP) precondition preference data for a plurality of network elements is maintained. A session initiation protocol (SIP) message directed towards a downstream network element is received. The received message includes SDP data. A lookup in the database in relation to the received SIP message is performed to retrieve SDP precondition preference data for the downstream network element. The received SIP message is processed according to the retrieved SDP precondition preference data. The processed SIP message is transmitted to the downstream network element.

公开(公告)号：US09800957B2

公开(公告)日：2017-10-24

申请号：US15239401

申请日：2016-08-17

Applicant: METASWITCH NETWORKS LTD.

Inventor： Jon Rowland

IPC: H04Q3/76 ,  H04Q3/10 ,  H04L29/06 ,  H04M3/42

CPC classification number: H04Q3/76 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/105 ,  H04L65/1073 ,  H04M3/08 ,  H04M3/42314 ,  H04M2207/45 ,  H04Q3/10 ,  H04Q2213/1322 ,  H04Q2213/13222 ,  H04Q2213/13286

Abstract: Measures for use in operating a network node in a telecommunications network. At a network node located in a second part of the network, signaling messages transmitted between a server and end devices in an at least a first group are monitored. Each monitored signaling message includes a telephone dialing number for a given end device in the at least first group and an extension number for the given end device. On the basis of the monitoring, mapping data is stored which includes mappings between telephone dialing numbers and extension numbers for end devices in the at least first group. In response to detecting a loss of connectivity between a first part of the telecommunications network and the second part of the telecommunications network, extension number dialing request messages received from end devices in the first group are processed according to a detected loss of connectivity operating mode.

公开(公告)号：US09722874B2

公开(公告)日：2017-08-01

申请号：US14610885

申请日：2015-01-30

Applicant: Metaswitch Networks Ltd

Inventor： Christopher Liljenstolpe ,  Michael Curtis

IPC: H04L12/24 ,  H04L12/751 ,  H04L12/753 ,  H04L12/725

CPC classification number: H04L41/0893 ,  H04L41/0813 ,  H04L45/02 ,  H04L45/306 ,  H04L45/48

Abstract: Described herein is an inference-based approach to process network route definitions, e.g. routes received from other network devices according to a defined routing protocol. In examples, at least one proposition is defined that relates to at least one property of the route. Probabilities are also defined in association with the proposition. A first probability may be indicative of a randomly-selected network route and a second probability may be indicative of randomly-selected network route that is suitable for use in routing network traffic. In certain examples, a probability that a given route is malicious or erroneous may be computed. Probabilities may be calculated by processing historical routing data, such as network route definitions that are labelled as suitable for routing traffic. Probabilities may also be evaluated cumulatively over multiple routing policy elements. Final actions may be made by applying a configurable range or threshold to an output confidence value.

公开(公告)号：US09672234B2

公开(公告)日：2017-06-06

申请号：US12209958

申请日：2008-09-12

Applicant: Jonathan Richard Berger ,  Gawain Bosworth ,  David Edward McWalter

Inventor： Jonathan Richard Berger ,  Gawain Bosworth ,  David Edward McWalter

IPC: G06F17/30

CPC classification number: G06F17/30327

Abstract: Databases and methods for storing, processing and searching data in database tree structures are provided. More particularly, a method for processing data stored in database tree structures for use in data packet routing applications, and a method of searching a database containing data stored in a tree structure, using a search key, are provided. The tree structure includes a plurality of nodes. Data relating to a first node and a second node is stored in the database. The data includes a first node key and a second node key which is prefixed by the first node key. The tree structure is searched using a search key by traversing the second node and determining if the first node key has a prefix which matches the search key.

公开(公告)号：US09641561B2

公开(公告)日：2017-05-02

申请号：US14868200

申请日：2015-09-28

Applicant: METASWITCH NETWORKS LTD

Inventor： Nicholas Peter Larkin

IPC: H04L29/06 ,  H04L12/823 ,  H04L29/08

CPC classification number: H04L65/1073 ,  H04L29/06 ,  H04L29/08072 ,  H04L47/323 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/105 ,  H04L65/1069 ,  H04Q2213/13204 ,  H04Q2213/13348 ,  H04Q2213/13389

Abstract: A method, system and computer program product are described for managing network communications to a Session Initiation Protocol (SIP) server capable of SIP processing using a SIP stack. A data packet is received from a network device. It is determined, from the data packet, whether the network device is a device recognized by the SIP server. Responsive to this determination, and before SIP processing using the SIP stack, it is determined whether the data packet conforms to a permitted configuration. The permitted configuration includes that data of the data packet indicates an unfragmented User Datagram Protocol (UDP) packet and that data indicative of SIP data in the received data packet matches a parsing rule. If the data packet conforms to the permitted configuration, it is passed to the SIP stack, if not it is discarded.

公开(公告)号：US20170060742A1

公开(公告)日：2017-03-02

申请号：US15243825

申请日：2016-08-22

Applicant: Metaswitch Networks Ltd

Inventor： Jim Wilkinson ,  Jonathan Lawn

IPC: G06F12/0804

CPC classification number: G06F12/0804 ,  G06F12/0802 ,  G06F12/0868 ,  G06F2212/466 ,  H04L67/2842

Abstract: A machine-implemented method for controlling transfer of at least one data item from a data cache component, in communication with storage using at least one relatively higher-latency path and at least one relatively lower-latency path, comprises: receiving metadata defining at least a first characteristic of data selected for inspection; responsive to the metadata, seeking a match between said at least first characteristic and a second characteristic of at least one of a plurality of data items in the data cache component; selecting said at least one of the plurality of data items where the at least one of the plurality of data items has the second characteristic matching the first characteristic; and passing the selected one of the plurality of data items from the data cache component using the relatively lower-latency path.

Abstract translation: 一种机器实现的方法，用于控制与数据高速缓存组件中的至少一个数据项的传输，所述数据高速缓存组件使用至少一个相对较高延迟的路径和至少一个相对较低等待时间的路径与存储通信，包括：接收至少定义的元数据 选择检查的数据的第一个特征; 响应所述元数据，在所述数据高速缓存组件中寻求所述至少第一特性与所述多个数据项中的至少一个的第二特性的匹配; 选择所述多个数据项中的至少一个数据项，其中所述多个数据项中的所述至少一个具有与所述第一特征匹配的第二特性; 以及使用相对较低延迟的路径从所述数据高速缓存组件传递所述多个数据项中的所选择的一个。

公开(公告)号：US09491302B2

公开(公告)日：2016-11-08

申请号：US14039969

申请日：2013-09-27

Applicant: Metaswitch Networks Ltd.

Inventor： Paul Brittain

IPC: H04M7/00 ,  H04L12/911 ,  H04L29/06 ,  H04M3/36 ,  H04M3/436 ,  H04W76/02

CPC classification number: H04M7/006 ,  H04L47/745 ,  H04L63/1458 ,  H04M3/367 ,  H04M3/436 ,  H04Q2213/13164 ,  H04Q2213/13166 ,  H04Q2213/13204 ,  H04Q2213/13348 ,  H04Q2213/13389 ,  H04W76/18

Abstract: Methods, apparatus and computer program products for processing signaling information for telephone call attempts in a packet-based telephony service. An overload protection node is introduced to protect a signaling node from an overload of signaling information for telephone call attempts. A characteristic of signaling information for telephone call attempts in the packet-based telephony service is monitored by the overload protection node and on the basis of the monitored characteristic, the overload protection node processes signaling information for telephone call attempts according to one of a number of different modes of operation. A mode of operation may involve transmitting signaling information for a call attempt to the signaling node or selecting one or more call attempts at the overload protection node for the purpose of reducing overload in the signaling node.

Abstract translation: 用于处理基于分组的电话服务中的电话呼叫尝试的信令信息的方法，装置和计算机程序产品。 引入过载保护节点以保护信令节点免受电话呼叫尝试的信令信息的过载。 基于分组的电话服务中的电话呼叫尝试的信令信息的特征由过载保护节点监视，并且基于所监视的特性，过载保护节点根据多个呼叫尝试中的一个来处理电话呼叫尝试的信令信息 不同的操作模式。 操作模式可以涉及向信令节点发送用于呼叫尝试的信令信息，或者为了减少信令节点中的过载，在过载保护节点选择一个或多个呼叫尝试。

公开(公告)号：US09467325B2

公开(公告)日：2016-10-11

申请号：US13777973

申请日：2013-02-26

Applicant: Metaswitch Networks Ltd.

Inventor： Alan Cook

IPC: H04L29/06 ,  H04L29/14

CPC classification number: H04L29/06027 ,  H04L65/1083 ,  H04L69/40

Abstract: A method of controlling a communication session is provided. The communication session is established in a telecommunications network between a first communication client of a plurality of communication clients on one or more communication devices associated with a first party and a communication device associated with a second party, the established communication session comprising at least a first communication session leg established between the first communication client and an intermediate node in the telecommunications network. The method includes detecting a loss in connectivity associated with the first communication session leg, and in response to detecting the loss in connectivity, initiating set up of a second communication session leg between an intermediate node in the telecommunications network and at least a second communication client of the plurality of communication clients on one or more communication devices associated with the first party.

Abstract translation: 提供了一种控制通信会话的方法。 通信会话在与第一方相关联的一个或多个通信设备上的多个通信客户端的第一通信客户端和与第二方相关联的通信设备之间的电信网络中建立，所建立的通信会话包括至少第一 在第一通信客户端和电信网络中的中间节点之间建立通信会话。 该方法包括检测与第一通信会话分支相关联的连接丢失，并且响应于检测到连接性的损失，启动在电信网络中的中间节点与至少第二通信客户端之间建立第二通信会话分支 在与第一方相关联的一个或多个通信设备上的多个通信客户端。

公开(公告)号：US09438739B2

公开(公告)日：2016-09-06

申请号：US14470758

申请日：2014-08-27

Applicant: Metaswitch Networks Ltd

Inventor： Chris Mairs ,  Alan Cook ,  Jon Rowland ,  Lionel James Jerome Lee ,  Doug Currie

IPC: H04M3/54 ,  H04M3/58 ,  H04M3/42

CPC classification number: H04M3/58 ,  H04M3/42263 ,  H04M3/54

Abstract: Measures for transferring an established communication session in a telecommunications network, the communication session being established between one of a plurality of communication clients associated with a user and a remote device associated with a remote party. At a call control system located in the signaling path for the established communication session, a communication session transfer request is received from a device associated with the user, the communication session transfer request having been generated by and transmitted from the device. Transfer of the established communication session from the one communication client in the plurality of communication clients to another communication client in the plurality of communication clients is initiated at the call control system. The transfer is conducted on the basis of a preconfigured data set, specific to the user, identifying one or more of the plurality of communication clients associated with the user.

Abstract translation: 用于在电信网络中传送建立的通信会话的措施，所述通信会话在与用户相关联的多个通信客户端之一和与远程方相关联的远程设备之间建立。 在位于建立的通信会话的信令路径中的呼叫控制系统中，从与用户相关联的设备接收到通信会话转移请求，该通信会话转移请求已由设备生成并从设备发送。 在呼叫控制系统中发起建立的通信会话从多个通信客户端中的一个通信客户端传送到多个通信客户端中的另一个通信客户端。 该转移是基于特定于用户的预先配置的数据集进行的，识别与用户相关联的多个通信客户端中的一个或多个。

公开(公告)号：US09426299B2

公开(公告)日：2016-08-23

申请号：US14012938

申请日：2013-08-28

Applicant: Metaswitch Networks Ltd.

Inventor： Michael Jeffrey Evans

IPC: H04L12/16 ,  H04M3/54 ,  H04L29/06 ,  H04M3/42 ,  H04M3/58

CPC classification number: H04M3/54 ,  H04L65/1006 ,  H04L65/1073 ,  H04L65/1086 ,  H04L65/1096 ,  H04M3/42263 ,  H04M3/58 ,  H04M2201/42

Abstract: Measures for moving an established communication session in a telecommunications network, the communication session being established between a first device in a plurality of user devices associated with a user and a remote user device associated with a remote party, to a second device in the plurality of user devices associated with the user. At the second user device, a message is received from the first user device indicating that a communication session has been established between the first user device and the remote user device, the message comprising contact information for the remote user device. The second user device transmits, to the remote user device using the contact information comprised in the message, a request to replace the communication session established between the first user device and the remote user device with a communication session between the second user device and the remote user device.

Abstract translation: 用于在电信网络中移动建立的通信会话的措施，在与用户相关联的多个用户设备中的第一设备和与远程方相关联的远程用户设备之间建立通信会话到多个 与用户相关联的用户设备。 在第二用户设备处，从第一用户设备接收到指示在第一用户设备和远程用户设备之间建立通信会话的消息，该消息包括用于远程用户设备的联系人信息。 第二用户设备使用包括在消息中的联系人信息向远程用户设备发送用第二用户设备和远程用户设备之间的通信会话替换在第一用户设备和远程用户设备之间建立的通信会话的请求 用户设备。