公开(公告)号：US20030235199A1

公开(公告)日：2003-12-25

申请号：US10408590

申请日：2003-04-07

申请人： ADTRAN, INC.

发明人： Phillip Stone Herron

IPC分类号： H04L012/56

CPC分类号： H04L49/3081 ,  H04L49/20 ,  H04L49/30 ,  H04L2012/5671

摘要： A mechanism for implementing a single-interrupt-based voice playout buffer transfer operation. The contents of each respective channel of a multi-channel voice playout buffer are encapsulated so as to prepend a four byte ATM header, a HEC byte, and a four byte AAL2 header to a forty-four byte voice channel field to realize a standard fifty-three byte ATM cell. Within the AAL2 header, a channel identification byte (CID) provides selective mapping to timeslots of a TDM frame, to accommodate variations among different vendor equipments. The next to last bit of the last byte of the ATM header is used as an interrupt to the network processor. Only the highest voice channel asserts this next to last bit as an interrupt bit.

公开(公告)号：US20030132669A1

公开(公告)日：2003-07-17

申请号：US10050642

申请日：2002-01-16

申请人： ADTRAN, INC.

发明人： Erik Stefan Bahl ,  John S. McGary ,  Jason P. Lyon

IPC分类号： H02J001/10

CPC分类号： H02J1/108 ,  Y10T307/549

摘要： A power supply system has redundant regulated power supplies, whose output ports are diode-ORed to an output node. One of the power supplies outputs a regulated output voltage that is sufficient to meet current demand of a load coupled to the output node. Each power supply has an associated monitoring circuit that monitors the voltage drop across its OR-ing diode. The monitoring circuit for a non-dominant power supply controls its operation so that the non-dominant supply provides a reduced current through its diode to the output node that is less than the current demand of the load, but sufficient to forward bias the diode, and thereby enable the non-dominant supply to immediately respond to a load change, such as an interruption in the operation of the dominant power supply.

摘要翻译： 电源系统具有冗余的稳压电源，其输出端口与输出节点二极管二极管。 其中一个电源输出一个稳定的输出电压，足以满足耦合到输出节点的负载的当前需求。 每个电源都有一个相关的监控电路，用于监控其二极管上的电压降。 用于非主导电源的监控电路控制其操作，使得非主要电源通过其二极管向输出节点提供小于负载的电流需求的减小的电流，但足以使二极管正向偏置， 从而使得非主导电源能够立即响应诸如主电源的操作中断的负载变化。

公开(公告)号：US20030123450A1

公开(公告)日：2003-07-03

申请号：US10040153

申请日：2002-01-02

申请人： ADTRAN, INC.

发明人： Jonathan Aaron Wright ,  Christopher A. Otto

IPC分类号： H04L012/56

CPC分类号： H04M11/062 ,  H04J3/0632 ,  H04L69/324 ,  H04L2012/5674

摘要： A byte boundary information recovery mechanism locates the first bits of respective bytes of an asynchronous transfer mode (ATM)-based serial data stream, used by a frame synchronization mechanism to delineate respective cells of the ATM stream, and thereby enables transceiver equipment to successfully receive and parse ATM traffic. The invention employs a counter offset-based scheme that generates an output signal in potential alignment with the (first bit) boundary of a byte of the data stream, in response to the contents of a counter reaching a prescribed count value. It then iteratively shifts, as necessary, the bit time at which the output signal is produced relative to the counting operation of the counter, until the output signal is aligned with the boundary of a byte of the data stream.

摘要翻译： 字节边界信息恢复机制定位由帧同步机制使用的基于异步传输模式（ATM）的串行数据流的各个字节的第一位，以描绘ATM流的各个小区，从而使得收发器设备能够成功地接收 并解析ATM流量。 本发明采用基于计数器偏移的方案，其响应于达到规定计数值的计数器的内容，产生与数据流的字节的（第一位）边界电位对准的输出信号。 然后，根据需要，迭代地相对于计数器的计数操作产生输出信号的位时间，直到输出信号与数据流的字节的边界对齐。

公开(公告)号：US20030072431A1

公开(公告)日：2003-04-17

申请号：US09981047

申请日：2001-10-16

申请人： Adtran, Inc.

发明人： Michael F. Lamy ,  Paul Graves McElroy ,  Charles A. Wilson ,  Arthur Edward Aldridge

IPC分类号： H04M003/42

CPC分类号： H04Q3/66 ,  H04Q2213/13097 ,  H04Q2213/13102 ,  H04Q2213/13202

摘要： A called telephone number substitution mechanism is incorporated into the call-routing software employed by the microcontroller of a customer premises-installed communication device, through which digitized voice and data services are supplied to a customer site. The number substitution mechanism automatically selectively modifies digits of an original (dialed) telephone number, as necessary, to conform with the connectivity requirements of the communication link serving the destination device, thereby enabling the call to reach the destination device.

摘要翻译： 所谓的电话号码替代机制被并入到由客户驻地安装的通信设备的微控制器采用的呼叫路由软件中，通过该呼叫路由软件将数字化语音和数据服务提供给客户站点。 号码替换机构根据需要自动选择性地修改原始（已拨）电话号码的数字，以符合为目的地设备服务的通信链路的连接性要求，从而使得呼叫到达目的地设备。

公开(公告)号：US20030016797A1

公开(公告)日：2003-01-23

申请号：US09910699

申请日：2001-07-20

申请人： Adtran, Inc.

发明人： Jon Thomas Zakrzewski ,  Robert Allen Barrett ,  Thomas L. Ballard III ,  John B. Wilkes JR.

IPC分类号： H04M011/00

CPC分类号： H04L47/10

摘要： An autobaud mechanism is executed by transceivers coupled to opposite ends of a communication loop, such as an extended range SDSL loop, to resolve the maximum data rate that can be supported by the loop, using signal power and quality measurements to first estimate the length of the SDSL loop and thereafter iteratively adjust baud rate and/or number of bits/per baud, as necessary, to realize an SDSL baud rate that will ensure error-free transmission over the loop.

摘要翻译： 自动波特率机制由耦合到通信环路的相对端（例如扩展范围SDSL环路）的收发器执行，以解决可由环路支持的最大数据速率，使用信号功率和质量测量来首先估计长度 SDSL循环，然后根据需要迭代地调整波特率和/或位数/每个波特数，以实现SDSL波特率，以确保无循环传输。

公开(公告)号：US20020039404A1

公开(公告)日：2002-04-04

申请号：US09891967

申请日：2001-06-26

申请人： Adtran, Inc.

发明人： Stacy Murphree ,  Jason N. Morgan

IPC分类号： H04M001/24 ,  H04M003/08

CPC分类号： H04M3/30 ,  H04M1/24 ,  H04M3/40

摘要： A loop loss measurement and reporting mechanism for a digital data services unit obviates interaction with a test unit at a far end of the loop, by relying upon a priori knowledge of the signal power and spectral content of a data port at the far end of the loop to conduct threshold detection and power level measurements. A received signal is amplified by amplifier circuitry, the gain of which is controllably adjusted by the microcontroller based upon the outputs of threshold detectors and power level measurement circuitry that monitor the amplified received signal. A front panel display is controlled by the microcontroller to display loop loss parameter information. To measure and report loop loss, the digital data services unit turns off its transmitter for a prescribed period of time and monitors an in-band signal of known power and spectral content sourced from the far end of the loop. In response to this measurement it iteratively adjusts, as necessary, the amplifier gains, and illuminates the LED display device in accordance with the power measurement.

摘要翻译： 用于数字数据服务单元的环路损耗测量和报告机制通过依赖于在远端的数据端口的信号功率和频谱内容的先验知识来消除与环路远端的测试单元的交互 循环来进行阈值检测和功率电平测量。 接收到的信号由放大器电路放大，其增益基于阈值检测器和监视放大的接收信号的功率电平测量电路的输出由微控制器可控地调节。 前面板显示由微控制器控制，显示环路丢失参数信息。 为了测量和报告环路损耗，数字数据业务单元在规定的时间内关闭发射机，并监测来自环路远端的已知功率和频谱内容的带内信号。 响应于该测量，根据需要根据需要迭代地调整放大器增益，并根据功率测量照亮LED显示装置。

公开(公告)号：USD435041S

公开(公告)日：2000-12-12

申请号：US117374

申请日：2000-01-21

申请人： James B. Coker ,  Clint Blasingame

设计人： James B. Coker ,  Clint Blasingame

公开(公告)号：US06067296A

公开(公告)日：2000-05-23

申请号：US827233

申请日：1997-03-28

申请人： Kevin Paul Heering ,  Robert David Deaton ,  John Robert Coffman, III ,  Michael Francis Lamy

发明人： Kevin Paul Heering ,  Robert David Deaton ,  John Robert Coffman, III ,  Michael Francis Lamy

IPC分类号： H04L12/28 ,  H04L12/43 ,  H04L12/50 ,  H04Q11/04

CPC分类号： H04Q11/04 ,  H04Q2213/13003 ,  H04Q2213/13036 ,  H04Q2213/13214 ,  H04Q2213/13292 ,  H04Q2213/13393

摘要： A channel interface architecture for a time division multiplexed (TDM) data communication system has a plurality of TDM communication ports coupled to serial TDM communication channels. The channel interface architecture interfaces data from any channel of any TDM communication port with any TDM communication channel of any other TDM communication port, on a per time slot/channel basis. The architecture includes a parallel data bus portion, an address bus portion, and a control portion. Each of a plurality of TDM communication channel interface units, associated with the ports, includes a multipage memory that stores data received from an associated serial communication link. The memory also selectively stores data that has been asserted onto the data bus portion of the bus architecture from another interface unit. A channel assignment memory of a bus controller is sequenced to cause data of a TDM communication channel in a selected interface unit's memory to be transferred to any memory location of another interface unit. The direction of data transfer is governed by the polarity of an edge of a clock signal conveyed over a control portion of the bus architecture.

公开(公告)号：US6046986A

公开(公告)日：2000-04-04

申请号：US923237

申请日：1997-09-04

申请人： James M. Glass, III ,  Paul G. McElroy ,  Michael T. Lattanzi ,  Charles R. Rehage

发明人： James M. Glass, III ,  Paul G. McElroy ,  Michael T. Lattanzi ,  Charles R. Rehage

IPC分类号： H04M1/2745 ,  H04Q11/04 ,  H04J3/12

CPC分类号： H04Q11/0435 ,  H04M1/274566 ,  H04Q11/0457 ,  H04Q2213/13096 ,  H04Q2213/13097 ,  H04Q2213/13109 ,  H04Q2213/1316 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  Y10S370/904

摘要： The inability of an ISDN equipment user to properly configure ISDN terminal equipment, even when provided with correctly assigned switch protocol, SPID and LDN parameters by a telephone service provider, is successfully remedied by a SPID/switch protocol detector. Upon being invoked by the user, the routine proceeds to conduct an iterative search of stored SPID formats associated with different central office switch protocols. SPIDs are assembled in accordance with the iteratively accessed SPID formats and directory number information that has been entered by the user. If an attempt to register a SPID is successful, the routine places a test call. If the test call is successful, the SPID and its associated switch protocol will have been identified, and the terminal equipment may place a call.

公开(公告)号：US5940374A

公开(公告)日：1999-08-17

申请号：US706784

申请日：1996-09-03

申请人： David L. Mack ,  Jason F. McCullough ,  Stacy M. Murphree

发明人： David L. Mack ,  Jason F. McCullough ,  Stacy M. Murphree

IPC分类号： H04J3/14 ,  H04J1/16

CPC分类号： H04J3/14

摘要： A D4 channel bank data bus monitoring scheme automatically determines if a channel unit connector slot is occupied, without having to gain physical access to the interior of the channel bank cabinet and inspect the channel bank's backplane slot positions. To this end, for a respective channel unit connector slot the channel bank's transmit data bus, which is initially pulled high via a pull-up resistor, is monitored for an all `1`s state. If the data on the bus is not all `1`s, then it is inferred that a channel unit is installed. If an all `1`s state is not detected, then, during the next time slot for that channel unit, the bus is decoupled from the pull-up resistor and coupled instead to a `soft` pull-down resistor. If the data on the bus is now all `0`s, it is inferred that the previously read all `1`s condition was due to the fact that no channel unit is installed, and the channel unit connector slot is declared as empty. However, if the data on the TDATA bus is not all `0`s, it is inferred that the previously read all `1`s condition was actual data asserted by an installed channel unit, and the channel unit connector slot is declared as occupied.

摘要翻译： D4通道组数据总线监控方案自动确定通道单元连接器插槽是否被占用，而无需获得对通道组机柜内部的物理访问并检查通道组的背板插槽位置。 为此，对于相应的通道单元连接器插槽，通过上拉电阻最初拉高的通道组的发送数据总线被监视1'状态。 如果总线上的数据不是全部为1，则推断出通道单元已安装。 如果未检测到全'1'状态，则在该通道单元的下一个时隙期间，总线与上拉电阻去耦，而是耦合到“软”下拉电阻。 如果总线上的数据现在全为0，则推断先前读取的所有'1'状态是由于没有安装通道单元，并且通道单元连接器插槽被声明为空。 然而，如果TDATA总线上的数据不是全部为0，则推断先前读取的所有'1'条件是已安装通道单元所确定的实际数据，并将通道单元连接器插槽声明为已占用。