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    • 3. 发明授权
    • Congestion relieving system in a communication system
    • 通信系统中的拥塞缓解系统
    • US5341373A
    • 1994-08-23
    • US831794
    • 1992-02-05
    • Ryoichi IshibashiKatsumi Sekine
    • Ryoichi IshibashiKatsumi Sekine
    • H04L12/28H04L12/70H04Q11/04H04L12/56
    • H04L12/2852H04Q11/0478H04L2012/5613H04L2012/5629H04L2012/5678
    • A congestion relieving system in a communication system includes a local switch (62a) and a customer station including a network terminator (64a) connected to the local switch (62a) and plural data receiving/transmitting units (65) connected to the network terminator (64a) through buses (67D and 67U) conformable to a DQDB protocol, the local switch (62a) includes a congestion relieving signal generating unit for generating a congestion relieving signal when congestion is detected. The congestion relieving signal is inserted, as a request bit, into a request bit area in the cell having a format conformable to the DQDB protocol. The cell is then transmitted from the local switch (62a) through the network terminator (64a) to the data receiving/transmitting units (65), and each data receiving/transmitting unit (65) is restricted, under the DQDB protocol, to transmit data, when the data receiving/transmitting unit (65) receives the request bit.
    • 通信系统中的拥塞解除系统包括本地交换机(62a)和包括连接到本地交换机(62a)的网络终端器(64a)和与网络终端器连接的多个数据接收/发送单元(65)的客户站 64a)通过符合DQDB协议的总线(67D和67U),本地交换机(62a)包括拥塞消除信号产生单元,用于在检测到拥塞时产生拥塞消除信号。 将拥塞消除信号作为请求位插入到具有与DQDB协议一致的格式的小区中的请求位区域中。 然后,该小区从本地交换机(62a)通过网络终端器(64a)发送到数据接收/发送单元(65),并且在DQDB协议下,每个数据接收/发送单元(65)被限制为传输 数据,当数据接收/发送单元(65)接收到请求位时。
    • 6. 发明授权
    • Fiber interface shelf for interfacing ATM switch module and subscriber
line or toll switch
    • 用于接口ATM交换机模块和用户线或长途交换机的光纤接口架
    • US5568300A
    • 1996-10-22
    • US505604
    • 1995-07-21
    • Ryoichi Ishibashi
    • Ryoichi Ishibashi
    • H04Q3/42H04Q3/00H04Q3/52H04Q11/04H04T14/08
    • H04L49/3081H04L49/1523H04L49/1553H04L49/30H04L49/552
    • A fiber interface shelf is connected to a plurality of subscriber lines on one side and to an ATM switch module on the other side for interfacing between the subscriber lines and the ATM switch module. The fiber interface shelf comprises a plurality of fiber interface cards, each of which is connected to a corresponding subscriber line for terminating the corresponding subscriber line, and a fiber interface common card for interfacing between the subscriber lines and the ATM switch module to transfer signals therebetween, the fiber interface common card having, a plurality of selection gates, each being inputted a pair of outputs of the fiber interface cards and outputting one of the pair of outputs, and a control circuit for controlling each of the selection gates to select and output the one of the pair of outputs.
    • 光纤接口架连接到一侧的多个用户线路和另一侧的ATM交换机模块,用于在用户线路与ATM交换机模块之间进行接口连接。 光纤接口架包括多个光纤接口卡,每个光纤接口卡连接到相应的用户线路,用于终止对应的用户线路;以及光纤接口公共卡,用于在用户线路和ATM交换机模块之间接口以在其间传输信号 ,所述光纤接口公共卡具有多个选择门,每个选择门都输入所述光纤接口卡的一对输出并输出所述一对输出中的一个;以及控制电路,用于控制每个所述选择门以选择和输出 这对输出中的一个。