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公开(公告)号：US20020196932A1
公开(公告)日：2002-12-26
申请号：US10216227
申请日：2002-08-09
申请人： ADTRAN, INC.
IPC分类号： H04M001/00 , H04M009/00
CPC分类号： H04L45/00 , H04L12/42 , H04Q3/0045
摘要： A dual mode phone line connectivity mechanism allows POTS access and digital transport access to coexist over the same local loop serving a customer site, while providing a net DS0 data rate for customer data communications (e.g., either 56 kbps or 64 kbps). When the customer's analog device is on-hook, the connectivity mechanism is configured to provide a digital path for the local loop, so that a digital link, exclusive of voice-processing, is established between a terminal adapter (or super-modem) and the service provider's line interface card, which replaces the voice path with a digital transceiver for the duration of the call. Local loop-associated and network-associated switches selectively provide one of two alternative signalling pathsnulla voice signalling path containing a codec for POTS signalling, and a data signalling path. A loop current detector monitors the local loop, while a network monitor circuit monitors the network for a ring command signal. Outputs of these monitor circuits are coupled to switch control logic, which also looks for digital equipment wake-up tones and synchronization signals associated with digital access for terminal equipment.
摘要翻译： 双模式电话线连接机制允许POTS访问和数字传输访问在服务于客户站点的相同本地环路上共存，同时为客户数据通信（例如，56kbps或64kbps）提供净DS0数据速率。 当客户的模拟设备挂机时，连接机制被配置为为本地环路提供数字路径，从而在终端适配器（或超调制解调器）和 服务提供商的线路接口卡，其在呼叫期间用数字收发器替代语音路径。 本地环路相关联和网络相关交换机选择性地提供两个替代信令路径之一，即包含用于POTS信令的编解码器的语音信令路径和数据信令路径。 环路电流检测器监视本地环路，而网络监视器电路监视网络以获得振铃命令信号。 这些监视器电路的输出耦合到开关控制逻辑，其也寻找与终端设备的数字接入相关联的数字设备唤醒音和同步信号。
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92.发明申请Nominal data flow path-based, virtual function configured frame relay state machine 审中-公开标称数据流路径，虚拟功能配置帧中继状态机公开(公告)号：US20020146004A1
公开(公告)日：2002-10-10
申请号：US09825703
申请日：2001-04-04
申请人： ADTRAN, INC.
IPC分类号： H04L012/28
摘要： A packet flow control mechanism for a frame engine of a packet switch has a reduced complexity set of nullnominalnull data flow path-based virtual functions, that process a packet based upon the state of the individual port. Code for the virtual function set can be installed in the instruction cache, by taking advantage of the fact that, once it has reached its steady state operation, the switch's frame engine can be expected to route packets over the nominal data flow path, with no conditional branching or function replacement. The actual function to which a respective virtual function points are dependent upon the signaling state and the level of congestion. For conditional branches, the frame engine may reference auxiliary memory, which stores a conditional state-based processing routine for handling exceptions to the nominal case.
摘要翻译： 用于分组交换机的帧引擎的分组流控制机制具有降低的“标称”数据流路径虚拟功能的复杂度集合，其基于各个端口的状态来处理分组，虚拟功能集的代码可以 安装在指令高速缓存中，通过利用这样的事实，一旦达到其稳定状态操作，则可以预期交换机的帧引擎可以在标称数据流路径上路由分组，没有条件分支或功能替换。 相应的虚拟功能点依赖于信令状态和拥塞级别的实际功能。对于条件分支，帧引擎可以引用辅助存储器，其存储用于处理例外情况的基于条件状态的处理例程。
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公开(公告)号：US20240106680A1
公开(公告)日：2024-03-28
申请号：US17954708
申请日：2022-09-28
申请人： ADTRAN, Inc.
IPC分类号： H04L12/46
CPC分类号： H04L12/4637 , H04L12/4641
摘要： Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for communication resilience in a Ring Network Topology. In some aspects, a top Ethernet node, implemented in a Ring Network Topology (“RNT”) that includes multiple additional Ethernet nodes, receives downstream traffic having a virtual local area network (“VLAN”) service address. The top Ethernet node can determine that the downstream traffic is destined for a given device serviced by a given Ethernet node, from among the multiple additional Ethernet nodes, that terminates a given Ethernet Ring Protection Switching (“ELPS”) group. The top Ethernet node can determine a given VLAN subnetwork that has been mapped to the given ELPS group, and transmit the downstream traffic through the RNT using the given VLAN subnetwork.
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公开(公告)号：US20230188874A1
公开(公告)日：2023-06-15
申请号：US17960915
申请日：2022-10-06
申请人： ADTRAN, Inc.
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0062 , H04Q11/0005 , H04Q2011/0081
摘要： Methods and systems for high speed failover in a network are provided. To provide faster Type C GPON redundancy failover, the disclosure herein describes the use of G.8031 1:1 ELPS in a single ended application to ensure path integrity through the network. Single ended 1:1 ELPS means that a network device is configured with 1:1 ELPS and switches paths in the event of disruption of the working communication path without the other underlying transport entities having knowledge of either the ELPS protocol or state machine. ELPS (Ethernet Linear Protection Switching, ITU G.8031) is a standardized method for protection switching between two point-to-point paths through a network, however its application here is quite novel. During a failure on the working path, traffic will switch over to the protection path. Type C PON protection provides a fully redundant path between the OLT and the ONU (2 separate PONs).
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公开(公告)号：US11588821B1
公开(公告)日：2023-02-21
申请号：US16818431
申请日：2020-03-13
申请人： ADTRAN,Inc.
发明人： Thomas Frederick Detwiler , Cory Z. Zywno , Darrin L. Gieger , Spencer R. Gass , Miriam Angela Nunnally
摘要： A filter for performing access control list (ACL) filtering may be used in place of highly-complex and resource-intensive TCAMs for access control. In this regard, the filter may be configured to compare packet header information to action-priority pairs stored in ACL tables. Each action-priority pair indicates at least one action to be performed for implementing a desired rule and a priority for that action. An access control action from an action-priority pair matching the header information may be performed in order to implement a desired access control rule for the received packet. If multiple action-priority pairs from the same table match the header information, then the priorities of the matching action-priority pairs may be compared to resolve the conflict. The circuitry of the filter is arranged such that exact-match searching can be performed on the ACL tables to reduce the complexity and cost of the filter.
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公开(公告)号：US11349576B2
公开(公告)日：2022-05-31
申请号：US17167879
申请日：2021-02-04
申请人： ADTRAN, Inc.
发明人： Daniel M. Joffe , Vern Brethour
摘要： A coupling module can be used to communicate high speed signals between an optical transceiver and a processing module of an optical communication device, such as an optical line termination (OLT) or an optical network unit (ONU). The coupling module can adjust the common mode voltage level of a differential signal output by the optical transceiver to the common mode voltage level required by the processing module. In addition, the coupling module splits each of the differential output signals from the optical transceiver and passes the split signals to both a high-pass filter and a low-pass filter that are connected in parallel. An adapter module can be connected to the coupling module such that the coupling module can receive different differential signals from different optical transceivers.
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公开(公告)号：US20210399804A1
公开(公告)日：2021-12-23
申请号：US17352876
申请日：2021-06-21
申请人： ADTRAN, Inc.
发明人： Jerry Greer , Jared Lee Oldacre , Vern Brethour
IPC分类号： H04B10/2581 , H04B10/80 , H04Q11/00
摘要： Circuitry of an optical line terminal (OLT) can be controlled to be compatible with optical modules of different optical protocols having different electrical connectivity requirements. In some embodiments, the OLT has a controller that is configured to communicate with an optical module plugged or otherwise mated with a socket of the OLT in order to discover a module type of the optical module. Based on the detected module type, the controller is configured to control the electrical characteristics of the OLT circuitry so that it is compatible with the electrical and operational requirements of the optical module. Thus, the OLT is compatible for use with any of a plurality of optical module types.
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98.发明授权公开(公告)号：US11175975B1
公开(公告)日：2021-11-16
申请号：US16232904
申请日：2018-12-26
申请人： ADTRAN, INC.
发明人： Arlynn Wayne Wilson
摘要： Systems and methods are provided for detecting fault conditions associated with an distribution point in a communication system using retrain event data. The retrain event data is collected for all of the ports associated with a target site of the distribution point. The collected retrain event data can then be organized into several different categories such as upstream related retrain events and downstream related retrain events. A screening criteria can be selected that is associated with a fault condition. The screening criteria can be evaluated using one or more evaluation metrics. Each evaluation metric can be based on normalized parameters generated from the categorized retrain event data. If all of the evaluation metrics associated with a screening criteria are satisfied, then the screening criteria is satisfied and the target site is determined to have a fault condition.
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公开(公告)号：US11036797B2
公开(公告)日：2021-06-15
申请号：US16123124
申请日：2018-09-06
申请人： ADTRAN, Inc.
发明人： Jonathan Hood
IPC分类号： G06F16/00 , G06F16/835 , G06F16/901 , G06F9/54
摘要： First data of a hierarchical data structure is accessed. A directed graph is generated based on the first data. Generating the directed graph includes creating multiple nodes representing the first data and linking first nodes representing data at a particular level of the hierarchical data structure to second nodes representing data at a lower level of the hierarchical data structure. A query requesting information from the hierarchical data structure is received. A particular node, that is a starting point for searching the directed graph based on the query, is identified within the directed graph. Out-links, that link the particular node to other nodes of the directed graph, are identified. Each of the other nodes, that is connected to the particular node by the out-links, is inspected to determine which of the other nodes represents responsive data matching the query. The query is responded with the responsive data.
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公开(公告)号：US10944599B2
公开(公告)日：2021-03-09
申请号：US16457071
申请日：2019-06-28
申请人： ADTRAN, INC.
发明人： Daniel M. Joffe , Vern Brethour
摘要： A coupling module can be used to communicate high speed signals between an optical transceiver and a processing module of an optical communication device, such as an optical line termination (OLT) or an optical network unit (ONU). The coupling module can adjust the common mode voltage level of a differential signal output by the optical transceiver to the common mode voltage level required by the processing module. In addition, the coupling module splits each of the differential output signals from the optical transceiver and passes the split signals to both a high-pass filter and a low-pass filter that are connected in parallel. The outputs of the high-pass filter and the low-pass filter from different paths of the differential signal are cross-coupled and combined to provide a differential signal to the processing module.
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