公开(公告)号：US5881048A

公开(公告)日：1999-03-09

申请号：US758111

申请日：1996-11-25

申请人： William D. Croslin

发明人： William D. Croslin

IPC分类号： H04Q3/00 ,  H04J3/14 ,  G06F11/00

CPC分类号： H04Q3/0079 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/13109 ,  H04Q2213/13166 ,  H04Q2213/13167 ,  H04Q2213/13204 ,  H04Q2213/13349 ,  H04Q2213/13521 ,  H04Q2213/13565

摘要： A method and apparatus for analyzing a telecommunications network and providing data based on such analysis first receives physical topology data for the network based on nodes and their connections in the network. Thereafter, the method and apparatus identify several inter-node configurations in the network. Preferably, the method and apparatus identify six inter-node configurations: stranded network non-rings, non-ring network spurs, stranded network rings, spur nodes with path diversity, network segments with pass-through nodes, and network segments without pass-through nodes. From these six identified inter-node configurations, the method and apparatus identify failure spans or maximum lengths in a network that can be singularly restored. As a result, the six identified inter-node configurations or failure spans can be employed to reduce the processing time required under network restoration systems, and thus can be used to minimize the time required to isolate a failure and generate a restoral route in the network.

摘要翻译： 用于分析电信网络并基于这种分析提供数据的方法和装置首先基于节点及其在网络中的连接来接收网络的物理拓扑数据。 此后，该方法和装置识别网络中的几个节点间配置。 优选地，所述方法和装置识别六个节点间配置：绞线网络非环，非环网络刺，绞合网络环，具有路径分集的支线节点，具有直通节点的网段以及没有通过的网段 节点。 从这六个确定的节点间配置中，该方法和装置识别可以被单独恢复的网络中的故障跨度或最大长度。 因此，可以使用六个确定的节点间配置或故障跨度来减少网络恢复系统所需的处理时间，并且因此可以用于最小化隔离故障所需的时间并在网络中产生恢复路由 。

公开(公告)号：US5870032A

公开(公告)日：1999-02-09

申请号：US787785

申请日：1997-01-23

申请人： Hossein Eslambolchi

发明人： Hossein Eslambolchi

IPC分类号： H04B1/74 ,  H04J3/14 ,  H04Q3/00 ,  H04B3/38 ,  G01R31/08 ,  H04L12/50

CPC分类号： H04J3/14 ,  H04Q3/0079 ,  H04Q2213/13076 ,  H04Q2213/13145 ,  H04Q2213/13166 ,  H04Q2213/13167 ,  H04Q2213/13349

摘要： A network (100) capable of quickly restoring traffic includes main and tertiary communications media (103, 105), each having associated main channels (102.sub.1-- 102.sub.n) and tertiary channels (104.sub.1 -104.sub.m), respectively. A first main channel (102.sub.1) and first tertiary channel (104.sub.1) run in parallel between a pair of digital signal protection switches (106.sub.1 -106.sub.2) coupled to a pair of digital cross-connect systems (108.sub.1, 116) that are spanned by the remaining main channels (102.sub.2 -102.sub.n) and tertiary channels (104.sub.2 -104.sub.m) in parallel. A controller 120 is responsive to the traffic on the main communications medium for signaling the first and second digital protection switches (106.sub.1, 106.sub.2) to switch traffic from the first main channel (102.sub.1) to the first tertiary channel (104.sub.1) should the first main channel become unavailable. The controller also subsequently signals the first and second digital cross-connect devices, which switch slower than the digital signal protection switches, to switch traffic from one or more of the other main channels to corresponding tertiary channels should such main channels become unavailable.

摘要翻译： 能够快速恢复业务的网络（100）包括分别具有相关联的主信道（1021-102n）和第三信道（1041-104m）的主和第三通信媒体（103,105）。 第一主通道（1021）和第一三通道（1041）并联连接在耦合到由一对数字交叉连接系统（1081,116）跨越的一对数字交叉连接系统（1081,116）的一对数字信号保护开关（1061-1062）之间 剩余主通道（1022-102n）和第三通道（1042-104m）并联。 控制器120响应于主通信介质上的业务，用于发信号通知第一和第二数字保护交换机（1061,1062），以便如果第一主要信道（1061,1062）将业务从第一主信道（1021）切换到第一第三信道 频道变得不可用 如果这些主要信道变得不可用，则控制器还随后向第一和第二数字交叉连接装置发信号，该第一和第二数字交叉连接装置比数字信号保护开关更慢地转换业务，从一个或多个其他主信道切换到相应的第三信道。

公开(公告)号：US5799072A

公开(公告)日：1998-08-25

申请号：US610617

申请日：1996-03-04

申请人： Isaac Vulcan ,  Gideon Barak

发明人： Isaac Vulcan ,  Gideon Barak

IPC分类号： H04M15/00 ,  H04M15/28 ,  H04Q3/00 ,  H04Q3/66

CPC分类号： H04M15/30 ,  H04M15/00 ,  H04M15/28 ,  H04M15/8044 ,  H04Q3/0079 ,  H04Q3/66 ,  H04M2215/0176 ,  H04M2215/42 ,  H04M2215/745 ,  H04M2215/92 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/1313 ,  H04Q2213/13138 ,  H04Q2213/13141 ,  H04Q2213/13199 ,  H04Q2213/1322 ,  H04Q2213/13405 ,  H04Q2213/13504 ,  H04Q2213/13533 ,  H04Q2213/13534 ,  H04Q2213/13541 ,  H04Q2213/13547

摘要： A call management system is disclosed that may interface with an existing PBX or may be utilized as a separate unit. In a preferred embodiment, the call management system includes a tariff data server, a local client computer and one or more line units. The tariff data server holds tariff data of service providers and transmits the tariff data to the local client computer via a communications link. The communications link can include the Internet making the tariff data widely available. Each line unit couples a telephone set to the telephone line provided by the LEC. The local client computer maintains a communications link with each line unit. Each line unit can be coupled to more than one LEC, allowing cost optimizations to take into account the LEC in addition to long distance carriers. The line unit intercepts the dialed digits and transmits them to the local client computer. The local client computer determines an optimum route for the call based on various parameters and transmits the complete dialing string back to the line unit which does the actual dialing of the digits. The local client computer maintains a client database of tariffs of telephone service providers and determines, from information in its client database, which telephone service provider or providers to utilize to execute the telephone call. The client database is updated on a periodic basis via, for example, electronic mail or FTP over the Internet. The local client computer also includes a carrier performance monitoring unit and call accounting unit. In another preferred embodiment, the call management system includes a telephone dialing unit and a data server which interfaces to existing PBX equipment.

摘要翻译： 公开了可以与现有PBX接口或可以用作单独单元的呼叫管理系统。 在优选实施例中，呼叫管理系统包括资费数据服务器，本地客户端计算机和一个或多个线路单元。 资费数据服务器保存服务提供商的费率数据，并通过通信链路将资费数据发送到本地客户端计算机。 通信链路可以包括使得资费数据广泛可用的因特网。 每个线路单元将电话机耦合到由LEC提供的电话线路。 本地客户端计算机与每个线路单元保持通信链路。 每个线路单元可以耦合到多个LEC，允许成本优化考虑到长距离运营商以外的LEC。 线路单元拦截拨号数字并将其发送到本地客户端计算机。 本地客户端计算机基于各种参数确定呼叫的最佳路由，并将完整的拨号串发送回执行数字的实际拨号的线路单元。 本地客户端计算机维护电话服务提供商的资费的客户端数据库，并从其客户数据库中的信息确定哪个电话服务提供商或提供商用于执行电话呼叫。 客户端数据库通过例如电子邮件或通过因特网的FTP定期更新。 本地客户端计算机还包括运营商绩效监控单元和呼叫计费单元。 在另一个优选实施例中，呼叫管理系统包括与现有PBX设备接口的电话拨号单元和数据服务器。

公开(公告)号：US5734640A

公开(公告)日：1998-03-31

申请号：US604954

申请日：1996-02-28

申请人： David Johnson

发明人： David Johnson

IPC分类号： H04L12/24 ,  H04Q3/00 ,  H04J1/16

CPC分类号： H04Q3/0079 ,  H04L41/0654 ,  H04L41/145 ,  H04Q3/0016

摘要： A communications network protection design method notionally adds a spare to the network for a simulated span failure and the respective values for network restorability merit, (taking into account span length or cost) are calculated. The notionally added spare having the greatest value of restorability merit is added to the network design and the process repeated, being extended to add two spares at a time if need be, and finally to add a complete path of spares to restore a failed span. The process ends after any addition of a spare or spares for which a network restorability target is reached. Following this forward synthesis phase, a tightening phase reduces the network cost by trying to remove spares and checking whether the restorability target can still be met. When no further single spares can be removed without violating the restorability target, this phase proceeds through various combinations namely; removing one spare and adding one spare; removing two spares and adding one or two spares; and removing three spares and adding two or three spares. Each such combination is accepted only if it will reduce the network cost.

摘要翻译： PCT No.PCT / GB94 / 02190 Sec。 371日期1996年2月28日 102（e）日期1996年2月28日PCT 1994年10月7日PCT PCT。 公开号WO95 / 10149 日期1995年04月13日通信网络保护设计方法在模拟跨度故障中为网络添加备用数据，并计算网络可恢复性值（考虑跨度长度或成本）的相应值。 添加了具有最大可恢复性优点价值的名义上的备件，并重复该过程，如果需要，可以一次扩展以添加两个备件，最后添加完整的备用路径以恢复故障跨度。 在任何添加了达到网络修复目标的备件或备件之后，该过程结束。 在此前合成阶段之后，紧固阶段通过尝试删除备件并检查是否仍能满足可恢复性目标来降低网络成本。 在不违反可修复性目标的情况下不再拆卸单个备件的情况下，该阶段通过各种组合进行; 取出一个备件并增加一个备件; 删除两个备件并添加一个或两个备件; 并删除三个备件并添加两个或三个备件。 每个这样的组合只有在降低网络成本的情况下才被接受。

公开(公告)号：US5657320A

公开(公告)日：1997-08-12

申请号：US468302

申请日：1995-06-06

申请人： Will Russ ,  Mark Wayne Sees ,  Lee Dennis Bengston ,  Clinton Allen Wagner

发明人： Will Russ ,  Mark Wayne Sees ,  Lee Dennis Bengston ,  Clinton Allen Wagner

IPC分类号： H04L12/56 ,  H04Q3/00 ,  H04L12/24

CPC分类号： H04L45/28 ,  H04L45/00 ,  H04L45/22 ,  H04Q3/0079

摘要： The present invention provides to a distributed restoration scheme a set of timers so that multiple senders and choosers can more fairly contend for the spare capacity of a telecommunications network. In particular, a preactivation timer would force a sender that had reserved excess spare capacity of the network for restoring its own failed links to release any unused spare capacity prior to the time that it terminates its operation, provided that it has found an alt-route or alt-routes for its failed link. An alarm validation timer and a hold off timer in the invention scheme further provide for respective validation and detection that a detected fault is not transient or intermittent in nature and that a restoration process is needed to find the alt-routes.

摘要翻译： 本发明为分布式恢复方案提供了一组定时器，使得多个发送者和选择者可以更加公平地竞争电信网络的备用容量。 特别地，预激活定时器将强制已经保留网络的多余备用容量的发送器来恢复其自己的故障链路，以在其终止其操作之前释放任何未使用的备用容量，只要它已经找到了一个alt-route 或alt路由失败的链接。 本发明方案中的报警验证定时器和保持定时器进一步提供相应的验证和检测，即检测到的故障本质上不是瞬时的或间歇的，并且需要恢复过程来找到替代路由。

公开(公告)号：US5646936A

公开(公告)日：1997-07-08

申请号：US493747

申请日：1995-06-22

申请人： Jasvantrai C. Shah ,  Sridhar S. Nathan

发明人： Jasvantrai C. Shah ,  Sridhar S. Nathan

IPC分类号： G06F11/00 ,  G06F11/20 ,  H04L12/56 ,  H04Q3/00 ,  H04J3/14

CPC分类号： G06F11/2007 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04Q3/0079

摘要： In a telecommunications network having a plurality of intelligent nodes interconnected by multiple communication channels, alternate paths and spare channels are set up for restoring traffic disrupted by failure to one or more of the communications channels. The alternate paths may be set up irrespective of the number of custodial node pairs, also referred to as leader/follower or sender/chooser pairs, that could simultaneously be involved in the restoration operation. The interconnected nodes have bi-directional working and/or spare channels. There is stored at each node in the network participating in the recovery operation a spare channel manifest for each of the leader/follower combinations. The first end node, or leader node, of every identified failed channel initiates a request message for each disrupted working channel to set up an alternate path. Spare channels are assigned to the alternate path so that, with the help of intermediate helper nodes, the request message, guided by the spare channel manifests, is sent to the second end node, or follower node, of the failed channel. An acknowledgement is sent by the follower node back to the leader node on the same path that the request message travelled on. The spare channel manifests are suitably configured to realize desired levels of restoration under various scenarios of failures in the network and are modified as warranted to account for changes in the network.

摘要翻译： 在具有通过多个通信信道互连的多个智能节点的电信网络中，建立备用路径和备用信道，以恢复由一个或多个通信信道故障而中断的业务。 不管可以同时参与恢复操作的保管节点对的数量，也称为引导者/跟随者或发送者/选择者对，可以设置替代路径。 互连节点具有双向工作和/或备用信道。 在网络中的每个节点处存储参与恢复操作的每个领导者/跟随者组合的备用信道清单。 每个被识别的失败信道的第一个结束节点或首领节点为每个被破坏的工作信道启动一个请求消息，以建立备用路径。 备用信道被分配给备用路径，使得在中间辅助节点的帮助下，由备用信道清除引导的请求消息被发送到故障信道的第二端节点或跟随节点。 由追随者节点在请求消息传播的相同路径上将确认发送回到前导节点。 备用信道表示被适当地配置为在网络中的各种故障情况下实现期望的恢复水平，并且被修改为有理由考虑网络中的变化。

公开(公告)号：US5444693A

公开(公告)日：1995-08-22

申请号：US874773

申请日：1992-04-27

申请人： Ahmet V. Arslan ,  James D. Bobeck ,  Jeffrey A. Gerrish ,  David E. McDonald

发明人： Ahmet V. Arslan ,  James D. Bobeck ,  Jeffrey A. Gerrish ,  David E. McDonald

IPC分类号： H04Q3/00 ,  H04L1/22

CPC分类号： H04Q3/0079 ,  H04Q2213/13521 ,  H04Q2213/13535 ,  H04Q2213/13565

摘要： Difficulties with prior disrupted communications restoration systems are overcome by employing for each node of a communications network a restoration processor in which predetermined functions of the restoration process are managed by respective ones of a plurality of manager modules. The manager modules are arranged to be directly interconnected only with a so-called restoration manager that coordinates the operations of the modules and provides for their interconnection needs. In a preferred embodiment, four manager modules, a) a user interface manager module, b) a digital cross-connect system (DCS) manager module, c) a distributed communications manager module and d) a core algorithm manager module, are interconnected and coordinated by the restoration manager. Additional robustness to the restoration process is provided by way of enhancements to the functionality of the core algorithm manager module. These enhancements include: a) improved glare processing (resolution of contention for a particular resource), b) "broadcast" of takedown messages, c) elimination of the need for time-outs during automatic restoration, d) a "peek ahead" routine that immediately takes down a needed resource that is already on a list to be taken down, e) use of a "minimax factor" and f) a "quick fix" technique for use in cases of limited failure of circuits between two nodes. The restoration process can also be cascaded so that it sequentially restores one level at a time, the levels being defined by the hierarchy of digital transmission rates employed in the network.

摘要翻译： 通过为通信网络的每个节点采用其中恢复处理的预定功能由多个管理器模块中的相应管理器模块来管理的恢复处理器来克服先前中断的通信恢复系统的困难。 管理器模块被布置为仅与协调模块的操作并提供其互连需求的所谓的恢复管理器直接相互连接。 在优选实施例中，a）用户接口管理器模块，b）数字交叉连接系统（DCS）管理器模块，c）分布式通信管理器模块和d）核心算法管理器模块的四个管理器模块互连， 由修复经理协调。 通过增强核心算法管理器模块的功能来提供对恢复过程的额外的鲁棒性。 这些增强功能包括：a）改进的眩光处理（特定资源的争用解决方案），b）删除消息的“广播”，c）在自动恢复期间消除对超时的需要，d）“向前看” 立即取消已经在列表中被删除的所需资源，e）使用“极小值因子”和f）“快速修复”技术，用于在两个节点之间电路有限故障的情况下。 恢复过程也可以级联，以使其一次顺序恢复一个级别，这些级别由网络中采用的数字传输速率的层级来定义。

公开(公告)号：US5233600A

公开(公告)日：1993-08-03

申请号：US562785

申请日：1990-08-06

申请人： Robert J. Pekarske

发明人： Robert J. Pekarske

IPC分类号： H04J3/14 ,  H04M3/22 ,  H04Q3/00

CPC分类号： H04J3/14 ,  H04M3/2254 ,  H04Q3/0016 ,  H04Q3/0079

摘要： A method is illustrated for identifying which one of a plurality of signal transmitting spans in a communication network of signal spans, such as bundles or sets of DS3 signals, has been interrupted by some type of failure. This identification is based on a local level knowledge, as opposed to prior art network level knowledge, by monitoring each circuit in a given span for either a directly observable signal impairment, or an alarm indication signal (AIS) and sending an IDLE whenever a directly observable signal impairment or an alarm indication signal is detected and declaring that the channel immediately upstream from that node has failed when either the directly observable signal impairment or the alarm indication signal is received for longer than a predetermined period of time. Such a determination as to the whereabouts of a failed span can then be used for other processes such as implementation of a network restoration scheme.

摘要翻译： 示出了一种用于识别信号跨度的通信网络中的多个信号传输跨度中的哪一个（诸如束或DS3信号组）已经被某种类型的故障中断的方法。 该识别基于与现有技术网络级知识相反的本地级知识，通过监视给定跨度中的每个电路用于可直接观察的信号损伤或报警指示信号（AIS），并且每当直接地发送IDLE时发送IDLE 检测到可观察到的信号损害或报警指示信号，并且当直接观察到的信号损伤或报警指示信号被接收长于预定时间段时，检测到紧邻该节点上游的信道失败。 关于故障跨度的下落的这种确定然后可以用于其他过程，例如实现网络恢复方案。

公开(公告)号：US5058105A

公开(公告)日：1991-10-15

申请号：US504359

申请日：1990-04-04

申请人： M. Omar Mansour ,  Liem T. Nguyen

发明人： M. Omar Mansour ,  Liem T. Nguyen

IPC分类号： H04L12/56 ,  H04Q3/00 ,  H04Q3/66

CPC分类号： H04L45/00 ,  H04L45/28 ,  H04Q3/0079 ,  H04Q3/66

摘要： A facility is provided for enhancing the reliability of a communications network so that traffic whose flow is disrupted by, for example, a faulty link, may be quickly restored to service. In particular, such traffic is restored to service by establishing a number of orders of connectivity each formed from spare link capacity, in which each succeeding order of connectivity represents the shortest loop around a preceding order of connectivity.

摘要翻译： 提供了一种用于提高通信网络的可靠性的设施，使得流量被例如故障链路中断的流量可以被快速地恢复到服务中。 特别地，通过建立由备用链路容量形成的多个连接顺序来恢复服务，其中连续性的每个后续顺序表示围绕前面的连接顺序的最短循环。

公开(公告)号：US4956835A

公开(公告)日：1990-09-11

申请号：US255748

申请日：1988-10-19

申请人： Wayne D. Grover

发明人： Wayne D. Grover

IPC分类号： H04J3/08 ,  H04Q3/00 ,  H04Q11/04

CPC分类号： H04Q3/0016 ,  H04J3/085 ,  H04Q3/0079 ,  H04J2203/0042 ,  H04J2203/006 ,  H04Q2213/13141 ,  H04Q2213/13167

摘要： A method and apparatus of restoring communications between a pair of nodes in a network having an arbitrary number of nodes and an arbitrary number of spans interconnecting the nodes, each span having working circuits between nodes designated for transmitting actual communications traffic and spare circuits capable of, but not designated for, transmitting actual communications traffic, the method comprising the steps of (a) establishing one or more independent communication paths between the pair of nodes through a series of spare circuits of spans interconnecting the pair of nodes and other interconnected nodes in the network; and (b) redirecting communications traffic intended for one or more failed spans interconnecting the pair of nodes through one or more of the paths.

摘要翻译： 一种在网络中具有任意数量的节点和互连节点的任意数目的跨度的网络中的一对节点之间的通信的方法和装置，每个跨度在指定用于发送实际通信业务的节点和能够发送实际通信业务的备用电路之间具有工作电路， 但不指定用于发送实际通信业务，所述方法包括以下步骤：（a）通过将所述一对节点和所述一对节点中的其他互连节点互连的一系列备用电路在所述一对节点之间建立一个或多个独立通信路径 网络; 和（b）重定向用于通过一个或多个路径互连该对节点的一个或多个故障跨越的通信流量。