Parallel optical transmission system and optical transmission apparatus
    2.
    发明授权
    Parallel optical transmission system and optical transmission apparatus 失效
    平行光传输系统和光传输设备

    公开(公告)号:US5903560A

    公开(公告)日:1999-05-11

    申请号:US847113

    申请日:1997-05-01

    CPC分类号: H04L7/0008 H04B10/29

    摘要: A first optical transmission device 1 is connected to a second optical transmission device 2, and the second optical transmission device 2 is connected to a third optical transmission device 3, via a plurality of optical transmission lines. Transfer data and a clock signal synchronous with the transfer data are transferred in parallel from the first optical transmission device 1 to the second optical transmission device 2 through the plurality of optical transmission lines. Transfer data and a clock signal synchronous with the transfer data are transferred in parallel from the second optical transmission device 2 to the third optical transmission device 3 through the plurality of optical transmission lines. The second optical transmission device 2 stops outputting data to the third optical transmission device 3 when the clock signal transferred from the first optical transmission device 1 cannot be detected.

    摘要翻译: 第一光传输装置1连接到第二光传输装置2,并且第二光传输装置2经由多条光传输线连接到第三光传输装置3。 与传送数据同步的传送数据和时钟信号通过多条光传输线从第一光传输装置1并行地传送到第二光传输装置2。 与传送数据同步的传送数据和时钟信号通过多条光传输线从第二光传输装置2并行地传送到第三光传输装置3。 当不能检测到从第一光传输装置1传送的时钟信号时,第二光传输装置2停止向第三光传输装置3输出数据。

    Parallel optical transmission system and optical transmission apparatus

    公开(公告)号:US5793510A

    公开(公告)日:1998-08-11

    申请号:US614176

    申请日:1996-03-12

    CPC分类号: H04L7/0008 H04B10/29

    摘要: A first optical transmission device 1 is connected to a second optical transmission device 2, and the second optical transmission device 2 is connected to a third optical transmission device 3, via a plurality of optical transmission lines. Transfer data and a clock signal synchronous with the transfer data are transferred in parallel from the first optical transmission device 1 to the second optical transmission device 2 through the plurality of optical transmission lines. Transfer data and a clock signal synchronous with the transfer data are transferred in parallel from the second optical transmission device 2 to the third optical transmission device 3 through the plurality of optical transmission lines. The second optical transmission device 2 stops outputting data to the third optical transmission device 3 when the clock signal transferred from the first optical transmission device 1 cannot be detected.

    Self routing exchange and exchange system
    6.
    发明授权
    Self routing exchange and exchange system 失效
    自动路由交换和交换系统

    公开(公告)号:US5555243A

    公开(公告)日:1996-09-10

    申请号:US353499

    申请日:1994-12-09

    摘要: A self-routing exchange which includes switch modules connected in multiple stages. A synchronous transfer mode (STM) circuit switch module, which is capable of changing over a connection relationship between incoming highways and outgoing highways, is provided between the multistage-connected switch modules and self-routing switch modules. Asynchronous transfer mode (ATM) switch modules are provided as switch modules in preceding and succeeding stages of the circuit switching module. In dependence upon the number m of self-routing switch modules, a controller sets, by means of software, the connection relationship between the incoming and outgoing highways in each of space switches incorporated within the circuit switching module. As a result, the total mn-number of incoming highways from the self-routing switch modules are connected to respective ones of mn-number of outgoing highways set by the controller. In a case where self-routing switch modules are added on later to expand the system, the controller changes the connection relationship between the incoming and outgoing highways in each space switch within the circuit switching module, using software.

    摘要翻译: 自动路由交换机,包括多个阶段连接的交换机模块。 在多级连接的交换机模块和自路由交换机模块之间提供了能够切换进入高速公路和出站高速公路之间的连接关系的同步传输模式(STM)电路交换模块。 在电路交换模块的前级和后续级提供了异步传输模式(ATM)开关模块作为开关模块。 依赖于自路由交换机模块的数量m,控制器通过软件设置结合在电路交换模块中的每个空间交换机中的输入和输出高速公路之间的连接关系。 结果,自路由交换机模块的入站高速公路总数连接到由控制器设置的mn个出站高速公路的各个。 在以后添加自路由交换机模块以扩展系统的情况下,控制器使用软件改变电路交换模块内的每个空间交换机中的输入和输出高速公路之间的连接关系。

    Connectionless communication system
    7.
    发明授权
    Connectionless communication system 失效
    无连接通信系统

    公开(公告)号:US5809012A

    公开(公告)日:1998-09-15

    申请号:US434745

    申请日:1995-05-04

    IPC分类号: H04L12/56 H04Q11/04

    摘要: A communication system for use with a network for transmitting fixed-length cells from a transmitting terminal via a virtual connection in the network to a receiving terminal. The communication system includes a converting device, connected to the transmitting terminal or the receiving terminal, for performing a bi-directional conversion between a variable-length packet and the fixed-length cells, the transmitting terminal or the receiving terminal outputting the variable-length packet, a buffer capacity monitoring device in the receiving terminal for monitoring a capacity of a buffer in the receiving terminal receiving the fixed-length cells and for outputting an alarm signal at the time of detecting a congestion state of the capacity of the buffer, a congestion state alerting device in the receiving terminal responsive to the alarm signal from the buffer capacity monitoring device for outputting an alert signal to the transmitting terminal, and a traffic transmission control device in the transmitting terminal responsive to the alert signal from the congestion state alerting device in the receiving terminal for controlling a transmission of the fixed-length cells to the receiving terminal.

    摘要翻译: 一种用于网络的通信系统,用于经由网络中的虚拟连接从发送终端向接收终端发送固定长度小区。 通信系统包括连接到发送终端或接收终端的转换装置,用于在可变长度分组与固定长度小区之间执行双向转换,发送终端或接收终端输出可变长度分组 分组,接收终端中的缓冲器容量监视装置,用于监视接收固定长度小区的接收终端中的缓冲器的容量,并且在检测到缓冲器的容量的拥塞状态时输出报警信号; 所述接收终端中的拥塞状态提示装置响应于来自所述缓冲器容量监视装置的所述警报信号,向所述发送终端输出警报信号,所述发送终端中的业务传输控制装置响应于所述拥塞状态警报装置 在用于控制固定长度的传输的接收终端中 h单元到接收终端。

    Telephone subscriber accomodation system in a broadband network
    8.
    发明授权
    Telephone subscriber accomodation system in a broadband network 失效
    宽带网络中的电话用户住宿系统

    公开(公告)号:US5521924A

    公开(公告)日:1996-05-28

    申请号:US384224

    申请日:1995-02-06

    摘要: On receiving voice data from a subscriber accommodated in a broadband network, a terminal adaptor separately puts the voice data in cells in 8-bit units every 125 .mu.s separately, and transmits the cells by a remote switching unit in the broadband network to subscriber terminal equipment. The subscriber terminal equipment accommodates and processes each item of 8-bit data in 24 channels in the PCM format, puts in cells the PCM-formatted data in 24 channels, and sends the cells sequentially to a broadband network transmission line through the remote switching unit. On receiving the above described data in cells, an adaptor provided between the broadband network and an existing telephone network converts the data to the PCM transmission format, and sends them to the existing telephone network after adding a signaling bit to them.

    摘要翻译: 在从宽带网络中收到的用户接收语音数据的情况下,终端适配器分别将每个125μs的8位单元中的话音数据单独放置,并将宽带网络中的远程交换单元的小区发送给用户终端 设备。 用户终端设备以PCM格式适应和处理24个信道中的每个8位数据项,将PCM格式的数据单元格放入24个信道中,并通过远程交换单元将单元顺序发送到宽带网络传输线 。 在单元中接收上述数据之后,在宽带网络和现有电话网络之间提供的适配器将数据转换为PCM传输格式,并在向它们添加信令位之后将其发送到现有的电话网络。

    Address decision system having address check system
    9.
    发明授权
    Address decision system having address check system 失效
    具有地址检查系统的地址决策系统

    公开(公告)号:US5459743A

    公开(公告)日:1995-10-17

    申请号:US275306

    申请日:1994-07-15

    摘要: In an address decision system in an ATM exchange, a table memory stores data showing relationships between VPI/VCI values and addresses. A latch circuit latches a VPI/VCI value contained in a cell transferred via a cell highway. A comparator circuit compares the VPI/VCI values stored in the table memory with the VPI/VCI value latched by the latch and generates a comparator output signal showing, in a normal operation, one of the addresses at which the VPI/VCI value from the latch circuit coincides with one of the VPI/VCI values in the table memory. An address decision unit encodes the comparator output signal and generates an encoded signal based on the comparator output signal. A decoder unit decodes the encoded signal and generates a decoded signal. A check unit receives the comparator output signal and the encoded signal and generates an error signal when the comparator output signal and the encoded signal do not match each other.

    摘要翻译: 在ATM交换机的地址决定系统中,表存储器存储表示VPI / VCI值与地址之间的关系的数据。 锁存电路锁存通过单元高速公路传送的单元中包含的VPI / VCI值。 比较器电路将存储在表存储器中的VPI / VCI值与由锁存器锁存的VPI / VCI值进行比较,并产生比较器输出信号,该信号表示在正常操作中VPI / VCI值来自 锁存电路与表存储器中的一个VPI / VCI值一致。 地址决定单元对比较器输出信号进行编码,并根据比较器输出信号产生编码信号。 解码器单元解码编码信号并产生解码信号。 检查单元接收比较器输出信号和编码信号,并且当比较器输出信号和编码信号彼此不匹配时产生误差信号。