ATM distribution networks for narrow band communications
    1.
    发明授权
    ATM distribution networks for narrow band communications 失效
    用于窄带通信的ATM分配网络

    公开(公告)号:US5426636A

    公开(公告)日:1995-06-20

    申请号:US169913

    申请日:1993-12-20

    摘要: Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 .mu.s. The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping). Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. Advantageously, large telecommunication networks can be implemented using a small number of switching units.Advantageously, a central communications network comprising stages of cell remapping interconnected by one or more stages of cell switching provides flexibility for interconnecting large access switches; the cell remapping stage may be made part of the access switch.

    摘要翻译: 脉冲编码调制(PCM)信号流被转换为异步传输模式(ATM)单元,用于通过电信网络的交换和传输。 每个小区携带多达48个不同语音连接的PCM样本,因为它们具有共同的目的地,所以从PCM数据流中选择语音连接。 这些小区通过ATM虚拟路径传输,每个路径每125个发送一个小区。 ATM信号由开关单元(单元切换)的单元切换,同时保持它们的有效载荷内容不变,以及用于切换ATM信号(单元重映射)的单元之间的各个语音连接的信号的单位。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 有利地,可以使用少量的交换单元来实现大型电信网络。 有利地,包括通过小区切换的一个或多个阶段互连的小区重映射阶段的中央通信网络提供了用于互连大接入交换机的灵活性; 小区重映射阶段可以被制成接入交换机的一部分。

    Inter-cell switching unit for narrow band ATM networks
    2.
    发明授权
    Inter-cell switching unit for narrow band ATM networks 失效
    窄带ATM网络的小区间切换单元

    公开(公告)号:US5390175A

    公开(公告)日:1995-02-14

    申请号:US170550

    申请日:1993-12-20

    摘要: Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 .mu.s. The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping). Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. Advantageously, large telecommunication networks can be implemented using a small number of switching units.Advantageously, such a cell remap unit provides a key element to the implementation of an efficient large ATM voice network.

    摘要翻译: 脉冲编码调制(PCM)信号流被转换为异步传输模式(ATM)单元,用于通过电信网络的交换和传输。 每个小区携带多达48个不同语音连接的PCM样本,因为它们具有共同的目的地,所以从PCM数据流中选择语音连接。 这些小区通过ATM虚拟路径传输,每个路径每125个发送一个小区。 ATM信号由开关单元(单元切换)的单元切换,同时保持它们的有效载荷内容不变,以及用于切换ATM信号(单元重映射)的单元之间的各个语音连接的信号的单位。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 有利地,可以使用少量的交换单元来实现大型电信网络。 有利地,这样的小区重映射单元为实现有效的大型ATM语音网络提供了关键要素。

    Establishing telecommunications call paths in broadband communication
networks
    3.
    发明授权
    Establishing telecommunications call paths in broadband communication networks 失效
    在宽带通信网络中建立通信呼叫路径

    公开(公告)号:US5345446A

    公开(公告)日:1994-09-06

    申请号:US972789

    申请日:1992-11-06

    摘要: In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual circuits, each circuit transmitting one cell every 125 .mu.s. Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths.

    摘要翻译: 根据本发明的原理,脉冲编码调制(PCM)信号流被转换成用于在电信网络上进行交换和传输的异步传输模式(ATM)小区。 每个小区携带多达48个不同语音连接的一个PCM采样,由PCM数据流选择的语音连接,因为它们具有共同的目的地。 单元通过ATM虚拟电路传输,每个电路每125微秒传输一个单元。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。

    Establishing telecommunications calls in a broadband network
    4.
    发明授权
    Establishing telecommunications calls in a broadband network 失效
    在宽带网络建立电话

    公开(公告)号:US5345445A

    公开(公告)日:1994-09-06

    申请号:US972788

    申请日:1992-11-06

    摘要: In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual circuits, each circuit transmitting one cell every 125 .mu.s. Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. This application relates to methods of establishing connections in accordance with the principles of the invention.

    摘要翻译: 根据本发明的原理,脉冲编码调制(PCM)信号流被转换成用于在电信网络上进行交换和传输的异步传输模式(ATM)小区。 每个小区携带多达48个不同语音连接的一个PCM采样,由PCM数据流选择的语音连接,因为它们具有共同的目的地。 单元通过ATM虚拟电路传输,每个电路每125微秒传输一个单元。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 本申请涉及根据本发明的原理建立连接的方法。

    Control information communication arrangement for a distributed control
switching system
    5.
    发明授权
    Control information communication arrangement for a distributed control switching system 失效
    分布式控制交换系统的控制信息通信布置

    公开(公告)号:US4821259A

    公开(公告)日:1989-04-11

    申请号:US904929

    申请日:1986-09-05

    IPC分类号: H04L12/64 H04Q11/04 H04Q11/02

    CPC分类号: H04L12/64 H04Q11/0428

    摘要: A switching system including a number of switching modules each having a plurality of access ports. Incoming and outgoing packet channels are extended between each switching module and an inter-module packet switch. Each of the switching modules includes both a packet switching unit and a circuit switching unit for switching information to and from the access ports. Each switching module further includes a control unit that controls the switching units and that generates inter-module control packets, and a communication interface that transmits inter-module control packets generated by the control unit on the incoming packet channel to the inter-module packet switch. The communication interface also transmits inter-module control packets received on the outgoing packet channel from the inter-module packet switch to the control unit. The inter-module packet switch concurrently packet switches inter-module control packets received on a number of the incoming packet channels, via mutltiple independent paths to a number of the outgoing packet channels.

    摘要翻译: 一种交换系统,包括多个具有多个接入端口的交换模块。 在每个交换模块和模块间分组交换机之间,进出口分组信道被扩展。 每个切换模块包括分组交换单元和用于向接入端口切换信息的电路交换单元。 每个交换模块还包括一个控制单元,其控制交换单元并且产生模块间控制分组;以及通信接口,其将由控制单元在输入分组信道上生成的模块间控制分组发送到模块间分组交换机 。 通信接口还将从输出分组信道接收到的模块间控制分组从模块间分组交换发送到控制单元。 模块间分组交换机并发分组交换在多个输入分组信道上接收的模块间控制分组,经由多个独立路径到多个输出分组信道。

    Access switches for large ATM networks
    6.
    发明授权
    Access switches for large ATM networks 失效
    大型ATM网络的接入交换机

    公开(公告)号:US5452297A

    公开(公告)日:1995-09-19

    申请号:US169909

    申请日:1993-12-20

    IPC分类号: H04L12/56 H04L12/64 H04Q11/04

    摘要: Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 .mu.s. The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping). Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. Advantageously, large telecommunication networks can be implemented using a small number of switching units.Advantageously, an access switch comprising a cell mapping or distribution stage for assembling cells comprising PCM samples headed for a common output of the access switch are switched in a cell switch to a cell remap unit for collecting PCM samples headed for a common destination into individual cells of an ATM output stream, provides output signals that can be readily and efficiently switched by a transit network for distribution to other access switches of a large network.

    摘要翻译: 脉冲编码调制(PCM)信号流被转换为异步传输模式(ATM)单元,用于通过电信网络的交换和传输。 每个小区携带多达48个不同语音连接的PCM样本,因为它们具有共同的目的地,所以从PCM数据流中选择语音连接。 这些小区通过ATM虚拟路径传输,每个路径每125个发送一个小区。 ATM信号由开关单元(单元切换)的单元切换,同时保持它们的有效载荷内容不变,以及用于切换ATM信号(单元重映射)的单元之间的各个语音连接的信号的单位。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利的是,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 有利地,可以使用少量的交换单元来实现大型电信网络。 有利地,包括用于组装小区映射或分配阶段的接入交换机,其包括以用于接入交换机的公共输出端口的PCM采样的小区切换到小区重新映射单元,用于收集朝向共同目的地的PCM样本到单个小区 提供ATM输出流的输出信号,其可以由转接网络容易地和有效地切换以分发给大型网络的其他接入交换机。

    Establishing telecommunications call paths between clustered switching
entities
    7.
    发明授权
    Establishing telecommunications call paths between clustered switching entities 失效
    在集群交换实体之间建立电信呼叫路径

    公开(公告)号:US5365524A

    公开(公告)日:1994-11-15

    申请号:US972787

    申请日:1992-11-06

    IPC分类号: H04L12/56 H04L12/64 H04Q11/04

    摘要: In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual circuits, each circuit transmitting one cell every 125 .mu.s. Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. This application relates to the use of the principles of this invention for implementing a large switching system or a cluster of highly interconnected smaller systems.

    摘要翻译: 根据本发明的原理,脉冲编码调制(PCM)信号流被转换成用于在电信网络上进行交换和传输的异步传输模式(ATM)小区。 每个小区携带多达48个不同语音连接的一个PCM采样,由PCM数据流选择的语音连接,因为它们具有共同的目的地。 单元通过ATM虚拟电路传输,每个电路每125微秒传输一个单元。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 本申请涉及使用本发明的原理来实现大型交换系统或高度互连的较小系统的集群。

    Intra-switch communications in narrow band ATM networks
    8.
    发明授权
    Intra-switch communications in narrow band ATM networks 失效
    窄带ATM网络内的交换机间通信

    公开(公告)号:US5428607A

    公开(公告)日:1995-06-27

    申请号:US169915

    申请日:1993-12-20

    摘要: Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 .mu.s. The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping). Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. Advantageously, large telecommunication networks can be implemented using a small number of switching units. For use with PCM switches, it is desirable to provide supervisory signals accompanying the PCM data. Advantageously, this arrangement permits supervisory signals to be passed within an access switch thus simplifying compatibility with existing switching systems.

    摘要翻译: 脉冲编码调制(PCM)信号流被转换为异步传输模式(ATM)单元,用于通过电信网络的交换和传输。 每个小区携带多达48个不同语音连接的PCM样本,因为它们具有共同的目的地,所以从PCM数据流中选择语音连接。 这些小区通过ATM虚拟路径传输,每个路径每125个发送一个小区。 ATM信号由开关单元(单元切换)的单元切换,同时保持它们的有效载荷内容不变,以及用于切换ATM信号(单元重映射)的单元之间的各个语音连接的信号的单位。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利的是,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 有利地,可以使用少量的交换单元来实现大型电信网络。 为了与PCM开关一起使用,需要提供伴随PCM数据的监控信号。 有利地,这种布置允许监视信号在接入交换机内传递,从而简化与现有交换系统的兼容性。

    ATM networks for narrow band communications
    9.
    发明授权
    ATM networks for narrow band communications 失效
    用于窄带通信的ATM网络

    公开(公告)号:US5422882A

    公开(公告)日:1995-06-06

    申请号:US170549

    申请日:1993-12-20

    摘要: Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 .mu.s. The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping). Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. Advantageously, large telecommunication networks can be implemented using a small number of switching units.

    摘要翻译: 脉冲编码调制(PCM)信号流被转换为异步传输模式(ATM)单元,用于通过电信网络的交换和传输。 每个小区携带多达48个不同语音连接的PCM样本,因为它们具有共同的目的地,所以从PCM数据流中选择语音连接。 这些小区通过ATM虚拟路径传输,每个路径每125个发送一个小区。 ATM信号由开关单元(单元切换)的单元切换,同时保持它们的有效载荷内容不变,以及用于切换ATM信号(单元重映射)的单元之间的各个语音连接的信号的单位。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 有利地,可以使用少量的交换单元来实现大型电信网络。

    Apparatus for interfacing between telecommunications call signals and
broadband signals
    10.
    发明授权
    Apparatus for interfacing between telecommunications call signals and broadband signals 失效
    用于在电信呼叫信号和宽带信号之间进行接口的装置

    公开(公告)号:US5327421A

    公开(公告)日:1994-07-05

    申请号:US972786

    申请日:1992-11-06

    IPC分类号: H04L12/56 H04L12/64 H04Q11/04

    摘要: In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual circuits, each circuit transmitting one cell every 125 .mu.s. Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. This application relates to arrangements for converting the PCM signal streams into ATM cells.

    摘要翻译: 根据本发明的原理,脉冲编码调制(PCM)信号流被转换成用于在电信网络上进行交换和传输的异步传输模式(ATM)小区。 每个小区携带多达48个不同语音连接的一个PCM采样,由PCM数据流选择的语音连接,因为它们具有共同的目的地。 单元通过ATM虚拟电路传输,每个电路每125微秒传输一个单元。 有利地,ATM传输系统与PCM系统接口,而不增加明显的延迟并且不需要额外的缓冲。 有利地,通过使用现有虚拟路径的小区中的可用时隙,大多数时间可以建立新的语音路径。 本申请涉及将PCM信号流转换成ATM信元的装置。