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    A DIGITAL COMMUNICATION SYSTEM WITH INTELLIGENT CHANNEL UNITS
    1.
    发明申请
    A DIGITAL COMMUNICATION SYSTEM WITH INTELLIGENT CHANNEL UNITS 审中-公开
    具有智能通道单元的数字通信系统

    公开(公告)号：WO1995007580A1

    公开(公告)日：1995-03-16

    申请号：PCT/US1994009169

    申请日：1994-08-11

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  EMERSON, Earl, A. ,  DESAY, Mahesh, P. ,  GONZALEZ, Henry, J. ,  HONG, Kyung-Yeop ,  SWIM, Martin, L.

    IPC: H04L01/18

    CPC classification number: H04Q3/00 ,  H04J3/14 ,  H04L1/08 ,  H04Q11/04

    Abstract: In a time division multiplex digital communication system, access devices are capable of generating and detecting data sequences that are normally suppressed by end user equipment for establishing in-band communications between the access device and selected intelligent channel units (ICU's). In-band communication is initiated by transmitting a sequence comprising a plurality of first bytes for preventing inadvertent initiation of maintenance operations for digital devices in a particular time slot, followed by a plurality of second bytes in said time slot. In-band communication is established when the selected ICU receives a sequence comprising a plurality of said first bytes, a plurality of bytes which identify the select device and a plurality of said second bytes. Once established, in-band communications can then be used to accomplish automated provisioning, performance reporting, status reporting, alarm reporting as well as other important functions.

    Abstract translation: 在时分复用数字通信系统中，接入设备能够生成和检测由终端用户设备正常抑制的用于在接入设备和所选择的智能信道单元（ICU）之间建立带内通信的数据序列。 通过发送包括多个第一字节的序列来启动带内通信，用于防止在特定时隙中数字设备的意外启动，随后在所述时隙中的多个第二字节。 当所选择的ICU接收包括多个所述第一字节的序列，识别选择装置的多个字节和多个所述第二字节时，建立带内通信。 一旦建立起来，可以使用带内通信来完成自动配置，性能报告，状态报告，报警报告以及其他重要功能。

    EQUALIZER FOR TRANSMISSION SYSTEMS
    2.
    发明申请
    EQUALIZER FOR TRANSMISSION SYSTEMS 审中-公开
    用于传输系统的均衡器

    公开(公告)号：WO1988001116A1

    公开(公告)日：1988-02-11

    申请号：PCT/US1987001846

    申请日：1987-07-29

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  GUPTA, Dev, V.

    IPC: H04B03/14

    CPC classification number: H04B3/06 ,  H04B3/145

    Abstract: A post-equalizer and pre-equalizer circuit for use in communicating between nodes in a pulse amplitude modulated (PAM) digital or analog communication system. The post-equalizer circuit comprises a first variable zero circuit, a second variable zero circuit, and a gain shaper circuit wherein the gain and frequency location of the zeros in the zero circuits combined with the gain of the gain shaping circuit are simultaneously controlled by a control circuit which generates a control voltage which is a monotonically increasing function of cable loss. In the case of a PAM digital communication system, the control voltage generates a signal equal to the difference between the equalized signal and the original transmitted signal which is used to vary the resistance of voltage variable resistors in the form of FET's in each of the zero circuits and gain shaper circuits. In the case of an analog system, the control voltage is derived from the sealing current that is determined by the DC resistance of the cable to be equalized. If the cable loss is above a predetermined value, a pre-equalizer circuit is switched into the transmit path of the communication system and provides a gain, zero and pole at predetermined frequencies which pre-compensates for the extra loss incurred in transmission over length greater than can be equalized by the post-equalizer. Additionally, a bi-quad ACE circuit is described which provides a hyperbolic relationship between the zero frequency location and circuit gain utilizing a cascode amplifier and emitter follower circuit with a feedback loop through a voltage variable resistor.

    MULTIMEDIA OVER VOICE COMMUNICATION SYSTEM
    3.
    发明申请
    MULTIMEDIA OVER VOICE COMMUNICATION SYSTEM 审中-公开
    多媒体语音通信系统

    公开(公告)号：WO1997044947A1

    公开(公告)日：1997-11-27

    申请号：PCT/US1997007910

    申请日：1997-05-09

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  GUPTA, Dev, V.

    IPC: H04M11/06

    CPC classification number: H04L12/2801 ,  H04M11/062 ,  H04N7/108

    Abstract: A communication system is described which enables simultaneous communication of voice, data and video bandwidth signals over a communication network. Signals are transported in a downstream direction from a remote node to a regional gateway system and also transported upstream from the regional gateway system to the remote node. In both cases the signals are transported over the same copper wire media.

    Abstract translation: 描述了能够通过通信网络同时通信语音，数据和视频带宽信号的通信系统。 信号在下游方向从远程节点传输到区域网关系统，并且还从区域网关系统的上游传输到远程节点。 在这两种情况下，信号通过相同的铜线介质传输。

    DIRECT DIGITAL ACCESS TELECOMMUNICATION SYSTEM
    4.
    发明申请
    DIRECT DIGITAL ACCESS TELECOMMUNICATION SYSTEM 审中-公开
    直接数字接入电信系统

    公开(公告)号：WO1992009152A2

    公开(公告)日：1992-05-29

    申请号：PCT/US1991008271

    申请日：1991-11-07

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  SHARPER, Craig, A. ,  REAMER, Lynne, A.

    IPC: H04J03/12

    CPC classification number: H04L12/42 ,  H04J3/125 ,  H04Q11/04

    Abstract: In a telecommunication system, a circuit is provided for determining the system mode and for restoring converted signalling bits. The circuit is designed to be used in a telecommunication system that lacks frame alignment. The circuit may serve as a trunk line interface located in a Direct Digital Access Office Channel Unit. Alternatively, the circuit may be coupled to a single trunk line which links Customer Premises Equipment (CPE) to the telecommunication system. The detection portion of the circuit determines the system mode of the trunk line connected to a CPE by detecting singalling bits when frame alignment is not maintained. The restoration portion of the circuit restores signalling bits which were converted due to a lack of frame alignment to their pre-converted state.

    Abstract translation: 在电信系统中，电路确定系统的模式并重构已转换的信令比特。 该电路被设计用于帧校准不完美的电信系统。 该电路可以作为位于直接数字接入办公室信道单元中的中继线的接口。 在另一个实施例中，电路可以连接到将客户办公设备（CPE）连接到电信系统的单独中继线。 当没有维持帧对齐时，电路的检测部分通过检测信令比特来确定连接到CPE的中继线系统的模式。 电路复原部分重建由于在其预翘曲状态下帧对准不足而已经转换的信令比特。

    DIGITAL DATA COMMUNICATIONS TERMINAL AND MODULES THEREFOR
    5.
    发明申请
    DIGITAL DATA COMMUNICATIONS TERMINAL AND MODULES THEREFOR 审中-公开
    数字数据通信终端和模块

    公开(公告)号：WO1989001278A1

    公开(公告)日：1989-02-09

    申请号：PCT/US1988002566

    申请日：1988-07-28

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  HACKETT, Robert, R. ,  KENEPP, Gregory, S. ,  LUNIEWICZ, Michael, M. ,  SWIM, Martin, L.

    IPC: H04Q11/04

    CPC classification number: H04Q11/04 ,  H04J3/08

    Abstract: A line interface module (28, 38) and selected channel unit modules (18) are replaced in a digital terminal which couples time multiplexed digital communications lines (12) to a plurality of voice signal lines (10). The line interface unit (28, 38) is provided with means for responding to a controller (40) to insert PCM data into selected time slots of the PCM signal on the digital line and to latch data received on the line. In addition to receiving pulse amplitude modulated signals from a receive unit (36) in the terminal, voice channel units (18) may also receive the PCM code. A state machine in the channel unit recognizes control sequences of insert data. By means of the insert data, the controller may direct provisioning of the channel unit (18) with such adjustments as gain control and equalization. It may also direct the channel unit to switch to a loopback mode of operation for diagnostics. PCM corresponding to tones may also be inserted by the line interface unit (38) to assist in diagnostics.

    DIGITAL DATA OVER VOICE COMMUNICATION
    7.
    发明申请
    DIGITAL DATA OVER VOICE COMMUNICATION 审中-公开
    数字数据通过语音通信

    公开(公告)号：WO1989008364A1

    公开(公告)日：1989-09-08

    申请号：PCT/US1989000740

    申请日：1989-02-23

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  GUPTA, Dev, V.

    IPC: H04M11/06

    CPC classification number: H04L25/4925 ,  H04M11/062

    Abstract: A method and apparatus is described for transmitting and receiving data signals and voice band signals over a single pair of wires, wherein the energy content of the data signals in the voice band is transferred to a higher frequency to avoid interference between the two. This is accomplished by sinusoidally encoding the data pulses in the frequency domain. The encoding is equivalently performed in the time domain by linearly combining weighted delayed and advanced versions of the data pulses, in accordance with a weighting formula. A transversal filter is used to multiple delayed and advanced versions of the data pulses by a scaling factor times the ratio of m!/(m-i)!i! factorial wherein i is the ith version being weighted, m is an integer greater than one and ! indicates the factorial function.

    NETWORK INTERFACE UNIT REMOTE TEST PATTERN GENERATION
    9.
    发明申请
    NETWORK INTERFACE UNIT REMOTE TEST PATTERN GENERATION 审中-公开
    网络接口单元远程测试模式生成

    公开(公告)号：WO1995015630A1

    公开(公告)日：1995-06-08

    申请号：PCT/US1994012855

    申请日：1994-11-08

    Applicant: INTEGRATED NETWORK CORPORATION

    Inventor： INTEGRATED NETWORK CORPORATION ,  EMERSON, Earl, A. ,  GONZALES, Henry, J. ,  HONG, Kyung-Yeop

    IPC: H04L01/24

    CPC classification number: H04L1/247 ,  G06F11/1402 ,  G06F11/22 ,  G06F13/38 ,  H04B17/401 ,  H04L1/241 ,  H04L1/243 ,  H04L1/244 ,  H04L43/50

    Abstract: A system for isolating the direction of communication errors in the local loop of a digital data network is described. A Network Interface Unit (NIU) located at the customer premises typically has a loopback feature, allowing for Bit Error Rate Tests (BERT) to be performed on the local loop from a remote test system located on the data network. The NIU loopback test isolates transmission problems at the customer premises from problems on the local loop. The present invention adds test pattern generation capability to the NIU, allowing the remote test system to determine whether the transmission problem on the local loop is in the network to customer premises direction or in the customer premises to network direction.

    Abstract translation: 描述了用于隔离数字数据网络的本地环路中的通信错误的方向的系统。 位于客户驻地的网络接口单元（NIU）通常具有环回功能，允许在位于数据网络上的远程测试系统的本地环路上执行误码率测试（BERT）。 NIU环回测试将客户端的传输问题与本地环路上的问题隔离开来。 本发明向NIU添加测试模式生成能力，允许远程测试系统确定本地环路上的传输问题是否在网络中到客户驻地方向或者在客户驻地到网络方向。

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