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    • 3. 发明授权
    • SDH wireless transmission apparatus
    • SDH无线传输设备
    • US06262973B1
    • 2001-07-17
    • US09165433
    • 1998-10-02
    • Yuji ShiraishiIchiro AyukawaKimihiko YoshimuraHisamichi HazamaKimio WatanabeShingo MizunoTadayuki Sakama
    • Yuji ShiraishiIchiro AyukawaKimihiko YoshimuraHisamichi HazamaKimio WatanabeShingo MizunoTadayuki Sakama
    • G01R3108
    • H04J3/14H04J2203/0035H04J2203/006H04W24/00H04W88/06
    • When a wireless channel fails, a working signal and a protection signal are synchronized and switching is performed without instantaneous disconnection. Each working unit of a plurality of working units is provided with a wireless-channel failure detector for detecting a failure that has occurred in a working wireless channel; a synchronization detecting circuit for detecting synchronization between a working wireless channel and a protection wireless channel; a changeover switch for selecting a signal from either the protection wireless channel or a working wireless channel without instantaneous disconnection; and a unit failure detector for detecting a failure that requires switching of a unit. When a failure develops in a wireless channel and a working wireless channel and the protection wireless channel are synchronized, a radio protection switching device controls the changeover switch to switch between working and protection wireless channels without instantaneous disconnection. Further, when failure that requires switching of a unit occurs, the radio protection switching device controls a unit changeover switch to switch between a working unit and the protection unit.
    • 当无线信道出现故障时,工作信号和保护信号是同步的,并且在没有瞬时断开的情况下进行切换。 多个工作单元的每个工作单元设置有用于检测工作无线信道中发生的故障的无线信道故障检测器; 用于检测工作无线信道和保护无线信道之间的同步的同步检测电路; 切换开关,用于从保护无线信道或工作无线信道中选择信号,而不会立即断开; 以及用于检测需要切换单元的故障的单元故障检测器。 当无线信道和工作无线信道发生故障并且保护无线信道同步时,无线电保护交换设备控制切换开关在工作和保护无线信道之间切换,而不会立即断开连接。 此外,当发生需要切换单元的故障时,无线电保护切换装置控制单元切换开关以在工作单元和保护单元之间切换。
    • 6. 发明授权
    • Call controlling apparatus and method used for an order-wire system in a communication system
    • 用于通信系统中的订单线系统的呼叫控制装置和方法
    • US06240171B1
    • 2001-05-29
    • US08778453
    • 1997-01-03
    • Ichiro Ayukawa
    • Ichiro Ayukawa
    • H04M160
    • H04J3/14H04J2203/0057
    • A call controlling apparatus for receiving input signals each including a phone number through respective communication channels and making a call. The apparatus provides a plurality of telephones corresponding respectively to the channels and a storage storing respective phone numbers of the telephones; detects the phone number in the input signals; determines in which input signals the phone number is detected; selects the phone number based on the determining; compares the selected phone number with those stored in the storage and makes the call on the corresponding telephone depending on a result of the comparison.
    • 一种呼叫控制装置,用于通过各个通信信道接收每个包括电话号码的输入信号并进行呼叫。 该装置提供分别对应于频道的多个电话机和存储电话机相应电话号码的存储器; 检测输入信号中的电话号码; 确定检测到电话号码的哪个输入信号; 根据确定选择电话号码; 将选择的电话号码与存储在存储器中的电话号码进行比较,并根据比较结果对相应电话进行呼叫。