公开(公告)号：US06891836B1

公开(公告)日：2005-05-10

申请号：US09325698

申请日：1999-06-03

申请人： David X. Chen ,  Masahiro Shimbashi

发明人： David X. Chen ,  Masahiro Shimbashi

IPC分类号： H04L12/64 ,  H04L12/56 ,  H04M3/00 ,  H04Q11/04 ,  H04L12/28 ,  H04J3/00

CPC分类号： H04L49/606 ,  H04J2203/0012 ,  H04L49/15 ,  H04L49/1553 ,  H04L49/254 ,  H04L2012/5618 ,  H04L2012/641 ,  H04Q11/0478

摘要： A system operable to communicate time-division multiplexed information and asynchronous transfer mode cells includes a primary rate switching fabric operable to receive a first plurality of transport signals and to switch the first plurality of transport signals at a first level, a sub-rate switching fabric operable to receive a second plurality of transport signals carrying time-division multiplexed information and to switch the second plurality of transport signals at second level that is a more granular level than the first level, and an asynchronous transfer mode switching fabric operable to receive a third plurality of transport signals carrying asynchronous transfer mode cells, and to switch asynchronous transfer mode cells among the third plurality of transport signals carrying asynchronous transfer mode cells.

公开(公告)号：US06498792B1

公开(公告)日：2002-12-24

申请号：US09325689

申请日：1999-06-03

申请人： Gary P. Johnson ,  Roland J. Moubarak ,  Masahiro Shimbashi ,  Katsuya Shirota ,  David X. Chen

发明人： Gary P. Johnson ,  Roland J. Moubarak ,  Masahiro Shimbashi ,  Katsuya Shirota ,  David X. Chen

IPC分类号： H04L1250

CPC分类号： H04L49/606 ,  H04J2203/0089 ,  H04L2012/5672 ,  H04Q11/0478

摘要： A telecommunications switching apparatus (10) includes optical paths (16-19) coupled to interface cards (26-29), which in turn are coupled to a switching circuit (41-42). The switching circuit is coupled to a plurality of universal connectors (71-74), each of which is coupled to an auxiliary connector (77-78). The universal connectors can each removably receive any one of several types of switching circuit cards (101-104), which each utilize a respective one of several different communication protocols. An auxiliary circuit card (107-108) may be provided in the associated auxiliary connector, in order to support switching circuit cards that use certain communication protocols. The optically transmitted information includes segments formatted according to respective communication protocols, and is converted from optical to electrical form by the interface cards. The switching circuit then routes each segment to a respective universal connector containing a switching circuit card that effects switching according to the communication protocol of that segment.

摘要翻译： 电信交换设备（10）包括耦合到接口卡（26-29）的光路（16-19），接口卡（26-29）又耦合到切换电路（41-42）。 开关电路耦合到多个通用连接器（71-74），每个通用连接器连接到辅助连接器（77-78）。 通用连接器可以各自可拆卸地接收几种类型的开关电路卡（101-104）中的任何一种，其分别利用几种不同的通信协议中的相应的一种。 可以在相关联的辅助连接器中提供辅助电路卡（107-108），以支持使用某些通信协议的交换电路卡。 光学传输的信息包括根据相应通信协议格式化的段，并且由接口卡从光学形式转换为电形式。 然后，开关电路将每个段路由到相应的通用连接器，该通用连接器包含根据该段的通信协议进行切换的切换电路卡。

公开(公告)号：US06658006B1

公开(公告)日：2003-12-02

申请号：US09326142

申请日：1999-06-03

申请人： David X. Chen ,  Edward T. Sullivan ,  Alexander A. Smith ,  Gary F. Chard

发明人： David X. Chen ,  Edward T. Sullivan ,  Alexander A. Smith ,  Gary F. Chard

IPC分类号： H04L1256

CPC分类号： H04L49/3081 ,  H04L49/10 ,  H04L49/103 ,  H04L49/25 ,  H04L49/3009 ,  H04Q11/0478

摘要： A system includes a communication device that includes a number of interface cards and a switching complex. Upon receiving a data signal, an input card modifies header bits of the data signal to identify an input port on which the data signal was received. The switching complex uses the modified header bits to communicate the data signal to an output card and associated output port. In a particular embodiment, the switching complex may also modify header bits to identify the input card.

摘要翻译： 一种系统包括包括多个接口卡和交换机的通信设备。 在接收到数据信号时，输入卡修改数据信号的标题位，以识别其上接收数据信号的输入端口。 切换复合体使用修改的报头位将数据信号传送到输出卡和相关的输出端口。 在特定实施例中，切换复合体还可修改报头比特以识别输入卡。

公开(公告)号：US07701892B2

公开(公告)日：2010-04-20

申请号：US11121445

申请日：2005-05-04

申请人： David X. Chen ,  Masahiro Shinbashi

发明人： David X. Chen ,  Masahiro Shinbashi

IPC分类号： H04B7/212 ,  H04L12/28

CPC分类号： H04L49/606 ,  H04J2203/0012 ,  H04L49/15 ,  H04L49/1553 ,  H04L49/254 ,  H04L2012/5618 ,  H04L2012/641 ,  H04Q11/0478

摘要： A system operable to communicate time-division multiplexed information and asynchronous transfer mode cells includes a primary rate switching fabric operable to receive a first plurality of transport signals and to switch the first plurality of transport signals at a first level, a sub-rate switching fabric operable to receive a second plurality of transport signals carrying time-division multiplexed information and to switch the second plurality of transport signals at second level that is a more granular level than the first level, and an asynchronous transfer mode switching fabric operable to receive a third plurality of transport signals carrying asynchronous transfer mode cells, and to switch asynchronous transfer mode cells among the third plurality of transport signals carrying asynchronous transfer mode cells.

摘要翻译： 可操作以传送时分复用信息和异步传输模式小区的系统包括主速率交换结构，其可操作以接收第一多个传输信号并将第一多个传输信号切换到第一级，子速率交换结构 可操作以接收携带时分多路复用信息的第二多个传输信号，并且以比第一级更细粒度的第二级切换第二多个传输信号，以及可操作以接收第三级的异步传输模式交换结构 多个传输信号承载异步传输模式小区，并且在承载异步传输模式小区的第三多个传输信号中切换异步传输模式小区。

公开(公告)号：US06501758B1

公开(公告)日：2002-12-31

申请号：US09326141

申请日：1999-06-03

申请人： David X. Chen ,  Edward T. Sullivan

发明人： David X. Chen ,  Edward T. Sullivan

IPC分类号： H04L1264

CPC分类号： H04Q11/0478 ,  H04J3/085 ,  H04J2203/0042 ,  H04J2203/0053 ,  H04J2203/006 ,  H04J2203/0089 ,  H04L2012/5612 ,  H04L2012/562 ,  H04L2012/5624 ,  H04L2012/5627 ,  H04L2012/5672

摘要： A method of transporting asynchronous transfer mode cells and time-division multiplexed information over a common fiber ring includes receiving a plurality of incoming signals comprising asynchronous transfer mode cells, legacy data, or time-division multiplexed information, formatting the plurality of incoming signals into a first plurality of incoming transport signals comprising asynchronous transfer mode cells and a second plurality of incoming transport signals comprising time-division multiplexed information, constructing from the first plurality of incoming transport signals a first outgoing synchronous transfer mode signal comprising at least one asynchronous transfer mode cell, constructing from the second plurality of incoming transport signals a second outgoing synchronous transfer mode signal comprising time-division multiplexed information, and transmitting the first and second outgoing synchronous transfer mode signals over a common fiber ring.

摘要翻译： 通过公共光纤环传送异步传输模式信元和时分多路复用信息的方法包括：接收包括异步传输模式信元，传统数据或时分复用信息的多个输入信号，将多个输入信号格式化为 包括异步传送模式单元的第一多个输入传输信号和包括时分多路复用信息的第二多个输入传输信号，从第一多个输入传输信号构建包括至少一个异步传输模式单元的第一输出同步传输模式信号 从所述第二多个输入传输信号构建包括时分复用信息的第二输出同步传输模式信号，以及通过公共光纤环发送所述第一和第二输出同步传输模式信号。

公开(公告)号：US06317426B1

公开(公告)日：2001-11-13

申请号：US09325499

申请日：1999-06-03

申请人： Jairo Abraham Afanador ,  Masahiro Shimbashi ,  David X. Chen

发明人： Jairo Abraham Afanador ,  Masahiro Shimbashi ,  David X. Chen

IPC分类号： H04L1264

CPC分类号： H04L49/606 ,  H04J2203/006 ,  H04L2012/5627 ,  H04Q11/0478

摘要： A hybrid protection circuit (10) operatively couples a plurality of communication paths in ingress cables (12) to a plurality of communication paths in egress cables (13). A line selector (31) effects protection switching of communication paths in one cable relative to communication paths in another cable, producing an output which is supplied to each of two switching sections (36, 37). The switching sections respectively effect switching according to a synchronous transport mode (STM) protocol, and an asynchronous transport mode (ATM) protocol. A multiplexer (57) selectively combines signals from the two switching sections, and supplies the result to a bridge circuit (61), which performs protection switching of these signals relative to communication paths in the respective egress cables (13). The hybrid protection circuit can be electrically configured to conform to one of various industry-standard protection techniques, including bidirectional line-switched ring (BLSR) protection, unidirectional path-switched ring (UPSR) protection, and one-plus-one (1+1) line protection.

摘要翻译： 混合保护电路（10）将入口电缆（12）中的多个通信路径可操作地耦合到出口电缆（13）中的多个通信路径。 线路选择器（31）相对于另一电缆中的通信路径实现一条电缆中的通信路径的保护切换，产生提供给两个切换部分（36,37）中的每一个的输出。 切换部分分别根据同步传输模式（STM）协议和异步传输模式（ATM）协议进行切换。 复用器（57）有选择地组合来自两个切换部分的信号，并将结果提供给桥接电路（61），桥接电路（61）执行这些信号相对于相应出口电缆（13）中的通信路径的保护切换。 混合保护电路可以电气配置为符合各种行业标准保护技术之一，包括双向线路交换环（BLSR）保护，单向路径交换环（UPSR）保护和一加一（1+ 1）线路保护。

公开(公告)号：US5659540A

公开(公告)日：1997-08-19

申请号：US573244

申请日：1995-12-15

申请人： David X. Chen ,  Deepak Mathur ,  L. David Danenberg

发明人： David X. Chen ,  Deepak Mathur ,  L. David Danenberg

IPC分类号： H04J3/14

CPC分类号： H04J3/14

摘要： A method for identifying and declaring a physical loopback condition upon running an OAM loopback test is provided. The method modifies ITU-T Recommendation I.610. According to the method, an OAM loopback test cell is generated with a correlation tag and a loopback indication value representing an outbound (forward) test cell, with the correlation tag being stored. Upon receiving back an OAM loopback test cell, the value of the loopback indication is determined, and the correlation tag of the incoming OAM loopback test cell is compared with the stored correlation tag. If the correlation tags match and the value of the loopback indication represents a forward test cell, a physical loopback condition is declared. On the other hand, if the correlation tags match and the value of the loopback indication represents a backward test cell, a successful OAM loopback condition is declared. An apparatus including a memory, a management processor, and a header processor for implementing the method of the invention is also disclosed.

摘要翻译： 提供了一种在运行OAM环回测试时识别和声明物理环回条件的方法。 该方法修改了ITU-T I.610建议书。 根据该方法，生成具有表示出站（前进）测试小区的相关标签和环回指示值的OAM环回测试小区，存储相关标签。 在接收到OAM环回测试单元后，确定环回指示值，并将输入的OAM环回测试单元的相关标签与存储的相关标签进行比较。 如果相关标签匹配，并且环回指示的值表示正向测试单元，则声明物理环回条件。 另一方面，如果相关标签匹配，并且环回指示的值表示反向测试单元，则声明成功的OAM环回条件。 还公开了一种包括用于实现本发明的方法的存储器，管理处理器和头处理器的装置。

公开(公告)号：US5864555A

公开(公告)日：1999-01-26

申请号：US675955

申请日：1996-07-05

申请人： Deepak Mathur ,  David X. Chen ,  L. David Danenberg

发明人： Deepak Mathur ,  David X. Chen ,  L. David Danenberg

IPC分类号： H04L12/56 ,  H04Q11/04 ,  H04J3/14

CPC分类号： H04Q11/0478 ,  H04L2012/5625

摘要： Methods and apparatus are provided for handling asynchronous transfer mode (ATM) cells sent from first user equipment through a plurality of ATM nodes and destined for second equipment, when the second equipment does not support ATM operations and maintenance (OAM) functionality. In particular, an ATM node connected to the second equipment is configured as an OAM proxy connection end-point for the second equipment such that ATM data cells which are destined for the second equipment are sent in a usual fashion, but ATM OAM cells destined for the second equipment are terminated and acted upon by the ATM node and are not forwarded to the second equipment. The proxy connection end-point functionality is preferably obtained by providing a user-friendly management information database (MIB) which stores configuration information for the ATM node. The configuration information is used by a management processor of the node for deciding when an incoming OAM cell intended for the second equipment is to be terminated by the ATM node.

摘要翻译： 当第二设备不支持ATM操作和维护（OAM）功能时，提供了用于处理从第一用户设备通过多个ATM节点发送并发往第二设备的异步传输模式（ATM）小区的方法和装置。 特别地，连接到第二设备的ATM节点被配置为用于第二设备的OAM代理连接端点，使得以通常方式发送去往第二设备的ATM数据单元，但是发往ATM OAM单元 第二台设备由ATM节点终止并执行，不转发给第二台设备。 代理连接端点功能优选地通过提供一种用于存储ATM节点的配置信息的用户友好的管理信息数据库（MIB）来获得。 所述配置信息由所述节点的管理处理器用于决定何时由所述ATM节点终止所述用于所述第二设备的入局OAM小区。

公开(公告)号：US06353593B1

公开(公告)日：2002-03-05

申请号：US09325495

申请日：1999-06-03

申请人： David X. Chen ,  Ted D. Chang ,  Rupert R. Zhu ,  Edward Y. Qian

发明人： David X. Chen ,  Ted D. Chang ,  Rupert R. Zhu ,  Edward Y. Qian

IPC分类号： H04J116

CPC分类号： H04L49/3081 ,  H04L2012/5619 ,  H04L2012/5624 ,  H04L2012/5627 ,  H04Q11/0478

摘要： A method for protecting virtual channel connection (VCC) traffic in a telecommunications system includes receiving a virtual path connection (VPC) at a destination node. The virtual path connection (VPC) is received on each of a working transmission link and a protection transmission link. The virtual path connection (VPC) includes a plurality of virtual channel connections (VCCs) A protection switching status is received for the working and protection transmission links. The virtual channel connections (VCCs) are selected from the working and protection transmission links for processing by selecting the virtual path connection (VPC) from one of the working and protection links based on the protection switching status for at least one of the working and protection transmission links.

摘要翻译： 一种用于在电信系统中保护虚拟信道连接（VCC）业务的方法包括在目的地节点处接收虚拟路径连接（VPC）。 在工作传输链路和保护传输链路的每一个上接收虚拟路径连接（VPC）。 虚拟路径连接（VPC）包括多个虚拟通道连接（VCC）。为工作和保护传输链路接收保护切换状态。 基于工作和保护中的至少一个的保护切换状态，通过从工作和保护链路中的一个选择虚拟路径连接（VPC），从用于处理的工作和保护传输链路中选择虚拟通道连接（VCC） 传输链路。