Telecommunications system including transmultiplexer installed between digital switch and optical signal transmission fiber
    1.
    发明授权
    Telecommunications system including transmultiplexer installed between digital switch and optical signal transmission fiber 失效
    电信系统包括数字交换机和光信号传输光纤之间的多路复用器

    公开(公告)号:US06552832B1

    公开(公告)日:2003-04-22

    申请号:US09285027

    申请日:1999-04-01

    IPC分类号: H04J400

    摘要: A telecommunications system provides telephone services to subscriber locations over dedicated optical fibers which extend in a “star” configuration from a telephone central office. A transmultiplexer installed at the central office is connected between a digital switch and the optical fibers. The transmultiplexer has a plurality of FDM ports, each of which is connected to a respective one of the optical fibers. The transmultiplexer is connected by one or more TDM ports to the digital switch. Preferably, the transmultiplexer provides a concentrating function whereby the number of subscriber lines served by the transmultiplexer is greater than the total voice-grade channel capacity of the connection between the transmultiplexer and the digital switch.

    摘要翻译: 电信系统通过专用光纤向用户位置提供电话服务,这些专用光纤以“星形”配置从电话中心局延伸。 安装在中央办公室的多路复用器连接在数字开关和光纤之间。 多路复用器具有多个FDM端口,每个端口连接到相应的一根光纤。 多路复用器通过一个或多个TDM端口连接到数字交换机。 优选地,多路复用器提供集中功能,由此由多路复用器服务的用户线路的数量大于多路复用器和数字交换机之间的连接的总语音级信道容量。

    System for integrated distribution of switched voice and television on
coaxial cable with phase distortion correction
    2.
    发明授权
    System for integrated distribution of switched voice and television on coaxial cable with phase distortion correction 失效
    用于具有相位失真校正的同轴电缆上交换式语音和电视的集成分配系统

    公开(公告)号:US5715242A

    公开(公告)日:1998-02-03

    申请号:US575508

    申请日:1995-12-20

    摘要: A system for voice distribution amongst a plurality of telephone subscriber locations operating on a broadband cable network wherein RF transmitting and RF receiving channels for carrying voice and signalling information are established at the subscriber locations and coupled with the broad band network and a central switch is also coupled with the broadband network and enables each RF transmitting channel to be selectively coupled to any of the RF receiving channels. Phase correction pilot tones having a known phase relationship are generated at the telephone subscriber locations and transmitted in one or more phase correction pilot tone channels separate from the RF transmitting channels to the central switch. At the switch, the phase correction pilot tones are recovered and the phases of the pilot tones are used to correct the phases of the transmitting channels.

    摘要翻译: 一种用于在宽带电缆网络上操作的多个电话用户位置之间进行语音分配的系统,其中在用户位置处建立用于承载语音和信令信息的RF发射和RF接收信道,并与宽带网络耦合,并且中央交换机也是 与宽带网络相结合,并且使得每个RF发射信道能够选择性地耦合到任何RF接收信道。 在电话用户位置产生具有已知相位关系的相位校正导频音,并且在与RF发射信道分离的一个或多个相位校正导频音频信道中发送到中央交换机。 在开关处,恢复相位校正导频音,并且使用导频音调的相位来校正发射信道的相位。

    Concentrating transmultiplexer for cable telephony
    3.
    发明授权
    Concentrating transmultiplexer for cable telephony 失效
    集中用于有线电话的多路复用器

    公开(公告)号:US6009084A

    公开(公告)日:1999-12-28

    申请号:US726641

    申请日:1996-10-07

    IPC分类号: H04H20/76 H04J4/00

    CPC分类号: H04J4/005

    摘要: A transmultiplexer is connected between digital facilities and analog facilities for translating information between TDM and FDM formats on the digital and analog facilities, respectively. Information in the TDM format is representative of a plurality of digital telephone signal channels and information in the FDM format is representative of a plurality of analog telephone signal channels. The total capacity of the digital facilities is smaller than the total capacity of the analog facilities. Any one of the digital channels can be selectively coupled to any one of the analog channels. The transmultiplexer is installed at a telephone central office facility as an interface between a cable telephony transmission system and a digital telephone switch. A host computer controls both the transmultiplexer and the digital telephone switch.

    摘要翻译: 数字设备和模拟设备之间连接有多路复用器,用于在数字和模拟设备上分别在TDM和FDM格式之间转换信息。 TDM格式的信息表示多个数字电话信号信道,FDM格式的信息表示多个模拟电话信号信道。 数字设施的总容量小于模拟设施的总容量。 数字通道中的任何一个可以选择性地耦合到任何一个模拟通道。 多路复用器作为电缆电话传输系统和数字电话交换机之间的接口安装在电话中心局设施处。 主机控制多路复用器和数字电话交换机。

    System for integrated distribution of switched voice and television on
coaxial cable
    4.
    发明授权
    System for integrated distribution of switched voice and television on coaxial cable 失效
    同轴电缆交换式语音电视综合分发系统

    公开(公告)号:US5351234A

    公开(公告)日:1994-09-27

    申请号:US635751

    申请日:1990-12-28

    摘要: A system for voice distribution amongst a plurality of telephone subscriber locations operating on a broadband cable network wherein RF transmitting and RF receiving channels for carrying voice and signalling information are established at the subscriber locations and coupled with the broad band network and a central switch is also coupled with the broadband network and enables each RF transmitting channel to be selectively coupled to any of the RF receiving channels.

    摘要翻译: 一种用于在宽带电缆网络上操作的多个电话用户位置之间进行语音分配的系统,其中在用户位置处建立用于承载语音和信令信息的RF发射和RF接收信道,并与宽带网络耦合,并且中央交换机也是 与宽带网络相结合,并且使得每个RF发射信道能够选择性地耦合到任何RF接收信道。

    System for integrated distribution of switched voice and television on
coaxial cable
    5.
    发明授权
    System for integrated distribution of switched voice and television on coaxial cable 失效
    同轴电缆交换式语音电视综合分发系统

    公开(公告)号:US5263021A

    公开(公告)日:1993-11-16

    申请号:US805388

    申请日:1991-12-10

    CPC分类号: H04N7/16 H04H20/81 H04N7/10

    摘要: A system for voice distribution amongst a plurality of telephone subscriber locations operating on a broadband cable network wherein RF transmitting and RF receiving channels for carrying voice and signalling information are established at the subscriber locations and coupled with the broad band network and a central switch is also coupled with the broadband network and enables each RF transmitting channel to be selectively coupled to any of the RF receiving channels. The system is further providing with an adjusting means which is responsive to the traffic on the central switch and which enables the power level in each of the channels to be selectively adjusted.

    摘要翻译: 一种用于在宽带电缆网络上操作的多个电话用户位置之间进行语音分配的系统,其中在用户位置处建立用于承载语音和信令信息的RF发射和RF接收信道,并与宽带网络耦合,并且中央交换机也是 与宽带网络相结合,并且使得每个RF发射信道能够选择性地耦合到任何RF接收信道。 该系统还进一步提供一个调节装置,该调节装置响应中央交换机上的业务,并且使得能够选择性地调整每个信道中的功率电平。

    Power feed circuit providing both on-hook and off-hook power for
telephone subscriber loop
    6.
    发明授权
    Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop 失效
    供电电路为电话用户回路提供挂机和摘机电源

    公开(公告)号:US6157716A

    公开(公告)日:2000-12-05

    申请号:US75094

    申请日:1998-05-08

    IPC分类号: H04M19/00 H04M11/00

    CPC分类号: H04M19/001

    摘要: A power feed circuit provides power for a telephone subscriber loop connected to a unit of terminal equipment. The power feed circuit includes a first current supply circuit for supplying power to the subscriber loop when the unit of terminal equipment is in an on-hook condition and when the unit of terminal equipment is in an off-hook condition, and a second current supply circuit for supplying power to the subscriber loop only when the unit of terminal equipment is in the off-hook condition. Each current supply circuit includes a respective battery, transistor and bias network. The first current supply circuit is connected to the subscriber loop via a diode which is reverse-biased when the unit of terminal equipment is in the on-hook condition. The power feed circuit may be usefully applied in an Optical Network Unit (ONU) of a "fiber-in-the-loop" telephone system or in a Subscriber-Cable Interface Unit (SCIU) of a cable telephony system.

    摘要翻译: 馈电电路为连接到终端设备单元的电话用户环路提供电力。 所述供电电路包括:第一电流供给电路,用于当所述终端设备的所述单元处于挂机状态时以及所述终端设备的所述单元处于摘机状态时向所述用户回路供电;以及第二电流供应 只有当终端设备的单元处于摘机状态时才向用户回路供电。 每个电流源电路包括相应的电池,晶体管和偏置网络。 第一电流供应电路通过二极管连接到用户回路,二极管在终端设备的单元处于挂机状态时被反向偏置。 供电电路可以有用地应用于“光纤在线”电话系统的光网络单元(ONU)或有线电话系统的用户 - 电缆接口单元(SCIU)中。

    Automated telephone number identification for automatic intercept in
telephone networks
    7.
    发明授权
    Automated telephone number identification for automatic intercept in telephone networks 失效
    电话网络自动拦截的自动电话号码识别

    公开(公告)号:US5119416A

    公开(公告)日:1992-06-02

    申请号:US530657

    申请日:1990-05-30

    IPC分类号: H04M3/487 H04M3/52 H04Q3/72

    摘要: An automatic telephone number identifier and method are provided wherein the seven digits of a telephone number developed in response to reentry of the number by a caller are validated by comparing the first three digits of the number to the NNX codes of the terminating central office of the trunk group carrying the call.

    摘要翻译: 提供了一种自动电话号码标识符和方法,其中通过将该号码的前三位数字与该终端中心局的NNX码进行比较来验证通过呼叫者对该号码的重新进行响应而开发的电话号码的七位数字 中继线群组携带电话。