公开(公告)号：EP0225756B1

公开(公告)日：1993-05-12

申请号：EP86309084.1

申请日：1986-11-20

申请人： GPT LIMITED

发明人： Philip, Alexander Schroder ,  Ozdamar, Mahir ,  Chopping, Geoffrey

IPC分类号： H04L9/16

CPC分类号： H04L9/0838 ,  H04L9/0891 ,  H04L63/0428 ,  H04Q11/0435 ,  H04Q2213/13209 ,  H04Q2213/1333 ,  H04Q2213/13339

公开(公告)号：EP0366263A2

公开(公告)日：1990-05-02

申请号：EP89309656.0

申请日：1989-09-22

申请人： GPT LIMITED

发明人： Proctor, Richard John ,  Maddern, Thomas Slade ,  Philip, Alexander Schroder

IPC分类号： H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L49/255 ,  H04L2012/5649 ,  H04L2012/565 ,  H04L2012/5651

摘要： The invention concerns Asynchronous Time Division Switches particularly for packet switching. In one embodiment a switch has 256 ports running at 155 M bits and is capable of switching incoming data cells at each of the input ports to any one of 256 output ports. At each input port a switch sequentially distributes the received data cells over 16 outputs each of which is connected to a different DMR circuit. There are 256 DMR circuits each having 16 inputs and 16 outputs. A DMR circuit is a fixed space switching device which has N inputs, N time intervals and N outputs and operates cyclically so that each input goes to each output for 1/Nth of the time. The inner stage of the ATD switch comprises 256 central switches each having 16 inputs and 16 outputs. Each central stage switch has its 16 inputs connected to 16 different DMR circuits. The fourth stage of the switch consists of another array of 256 output DMR circuits with each central switch being connected to 16 different output DMR circuits. Each output DMR has its outputs connected to 16 different output ports. The internal circuitry of the ATD switch runs on 20 M bits. When a data cell is received at an input port its destination is derived from a header attached to the cell. Control circuitry enables the receiving port to request three address to query three possible routes through the switch. The ability to provide this series of questions is given by staggering the windows through which an output port can communicate with the central switches. Although data streams are received asynchronously the operation of the ATD switch is synchronous.
The switch is potentially capable of switching non ATD, synchronous traffic. Mixed mode of operation is possible.

摘要翻译： 本发明涉及特别用于分组交换的异步时分交换机。 在一个实施例中，交换机具有以155M位运行的256个端口，并且能够将每个输入端口处的输入数据单元切换到256个输出端口中的任一个。 在每个输入端口，开关顺序地分配接收的数据单元超过16个输出，每个输出连接到不同的DMR电路。 有256个DMR电路，每个具有16个输入和16个输出。 DMR电路是具有N个输入，N个时间间隔和N个输出的固定空间切换装置，并且周期性地进行操作，使得每个输入到达每个输出1 / Nth时间。 ATD开关的内部级包括256个中央开关，每个开关具有16个输入和16个输出。 每个中央级开关的16个输入端连接到16个不同的DMR电路。 开关的第四级由256个输出DMR电路的另一个阵列组成，每个中央开关连接到16个不同的输出DMR电路。 每个输出DMR的输出连接到16个不同的输出端口。 ATD交换机的内部电路运行在20 M位。 当在输入端口处接收到数据信元时，其目的地是从连接到该信元的报头导出的。 控制电路使接收端口能够请求三个地址来查询交换机的三条可能的路由。 提供这一系列问题的能力是通过交错输出端口可以与中央交换机通信的窗口进行交错给出的。 虽然数据流是异步接收的，但是ATD交换机的操作是同步的。 所描述的实施例具有许多优点：首先，ATD开关的设计是同步的，从而允许两个平面以双同步模式运行以检查故障。 交换机通过在多个中央阶段传播数据，以比它接收的速率更低的速率切换数据。 仅在交换机的接收部分需要控制，然后单元是自路由，具有多个中心路由。 因此ATD交换机是自动路由。 此外，交换机具有可变小区路由和小区序列完整性。 这是一个非常不寻常的组合，但是非常可取。 ATD开关不需要非常高的技术来使其工作，它能够用当今的技术制造。 另一个优点是在ATD交换机中描述的单元延迟是由三个元素构成的，一个FIXED延迟取决于端口号（0到256 us），纯ATD输出争用延迟（0到105 us，所有ATD交换机都有 这个）和一个非常小的输入延迟（0到10 us）。 大多数交换机具有许多阶段，每个阶段都表现出ATD输出争用延迟。 最后，交换机潜在地可以切换非ATD，同步业务。 混合操作模式是可能的。

公开(公告)号：EP0366263A3

公开(公告)日：1992-09-16

申请号：EP89309656.0

申请日：1989-09-22

申请人： GPT LIMITED

发明人： Proctor, Richard John ,  Maddern, Thomas Slade ,  Philip, Alexander Schroder

IPC分类号： H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L49/255 ,  H04L2012/5649 ,  H04L2012/565 ,  H04L2012/5651

摘要： The invention concerns Asynchronous Time Division Switches particularly for packet switching. In one embodiment a switch has 256 ports running at 155 M bits and is capable of switching incoming data cells at each of the input ports to any one of 256 output ports. At each input port a switch sequentially distributes the received data cells over 16 outputs each of which is connected to a different DMR circuit. There are 256 DMR circuits each having 16 inputs and 16 outputs. A DMR circuit is a fixed space switching device which has N inputs, N time intervals and N outputs and operates cyclically so that each input goes to each output for 1/Nth of the time. The inner stage of the ATD switch comprises 256 central switches each having 16 inputs and 16 outputs. Each central stage switch has its 16 inputs connected to 16 different DMR circuits. The fourth stage of the switch consists of another array of 256 output DMR circuits with each central switch being connected to 16 different output DMR circuits. Each output DMR has its outputs connected to 16 different output ports. The internal circuitry of the ATD switch runs on 20 M bits. When a data cell is received at an input port its destination is derived from a header attached to the cell. Control circuitry enables the receiving port to request three address to query three possible routes through the switch. The ability to provide this series of questions is given by staggering the windows through which an output port can communicate with the central switches. Although data streams are received asynchronously the operation of the ATD switch is synchronous. The switch is potentially capable of switching non ATD, synchronous traffic. Mixed mode of operation is possible.

公开(公告)号：EP0590901A3

公开(公告)日：1995-05-17

申请号：EP93307615.0

申请日：1993-09-24

申请人： GPT LIMITED

发明人： Philip, Alexander Schroder ,  Chopping, Geoffrey

IPC分类号： H04Q11/00

CPC分类号： H04Q11/0001 ,  H04J3/0688 ,  H04J2203/0089 ,  H04Q2011/0081

摘要： Coherent optic switching provides an effective solution for broadband switching. Advantageously, the control information should also be transmitted optically. A broadband multiport coherent optic data switch comprises a passive optic combiner/splitter, a plurality of port units and a switch control unit connected thereto, each port unit having a coherent optic source tuned to a respective optic frequency, the output of each source carrying thereon control information, including control information received from the control unit, together with switched data, the outputs of the sources being combined and distributed to all of the plurality of port units.

公开(公告)号：EP0590901A2

公开(公告)日：1994-04-06

申请号：EP93307615.0

申请日：1993-09-24

申请人： GPT LIMITED

发明人： Philip, Alexander Schroder ,  Chopping, Geoffrey

IPC分类号： H04Q11/00

CPC分类号： H04Q11/0001 ,  H04J3/0688 ,  H04J2203/0089 ,  H04Q2011/0081

摘要： Coherent optic switching provides an effective solution for broadband switching.
Advantageously, the control information should also be transmitted optically.
A broadband multiport coherent optic data switch comprises a passive optic combiner/splitter, a plurality of port units and a switch control unit connected thereto, each port unit having a coherent optic source tuned to a respective optic frequency, the output of each source carrying thereon control information, including control information received from the control unit, together with switched data, the outputs of the sources being combined and distributed to all of the plurality of port units.

摘要翻译： 相干光交换为宽带切换提供了有效的解决方案。 有利地，控制信息也应当被光学地传输。 宽带多端口相干光数据交换机包括无源光学组合器/分离器，多个端口单元和连接到其上的开关控制单元，每个端口单元具有调谐到相应的光学频率的相干光学源，每个源的输出承载在其上 控制信息，包括从控制单元接收的控制信息以及切换的数据，所述源的输出被组合并分配给所述多个端口单元。

公开(公告)号：EP0225756A3

公开(公告)日：1989-04-05

申请号：EP86309084.1

申请日：1986-11-20

申请人： GPT LIMITED

发明人： Philip, Alexander Schroder ,  Ozdamar, Mahir ,  Chopping, Geoffrey

IPC分类号： H04L9/16

CPC分类号： H04L9/0838 ,  H04L9/0891 ,  H04L63/0428 ,  H04Q11/0435 ,  H04Q2213/13209 ,  H04Q2213/1333 ,  H04Q2213/13339

摘要： The telecommunications system includes at least two exchanges and a plurality of user equipments. Each equipment includes a store for holding a user variable data word particular to that user. Each exchange is provided with a store for holding all the user variable data words of the users connected to it, and each exchange is also provided with its own random variable data word. When a first user makes a secure call to a second user, the first user equipment encrypts the call using its particular user variable data word and sends the encrypted data to its own exchange. The exchange decrypts the call using the particular user variable data word and generates the random variable data word that will be used for the call. The exchange encrypts the random variable data word with the particular user variable data word and returns it to the first user. The exchange also sends the random variable data word to the second user's exchange which encrypts it with the user variable data word particular to the second user, and sends it to the second user.

公开(公告)号：EP0225756A2

公开(公告)日：1987-06-16

申请号：EP86309084.1

申请日：1986-11-20

申请人： GPT LIMITED

发明人： Philip, Alexander Schroder ,  Ozdamar, Mahir ,  Chopping, Geoffrey

IPC分类号： H04L9/16

CPC分类号： H04L9/0838 ,  H04L9/0891 ,  H04L63/0428 ,  H04Q11/0435 ,  H04Q2213/13209 ,  H04Q2213/1333 ,  H04Q2213/13339

摘要： The telecommunications system includes at least two exchanges and a plurality of user equipments. Each equipment includes a store for holding a user variable data word particular to that user. Each exchange is provided with a store for holding all the user variable data words of the users connected to it, and each exchange is also provided with its own random variable data word. When a first user makes a secure call to a second user, the first user equipment encrypts the call using its particular user variable data word and sends the encrypted data to its own exchange. The exchange decrypts the call using the particular user variable data word and generates the random variable data word that will be used for the call. The exchange encrypts the random variable data word with the particular user variable data word and returns it to the first user. The exchange also sends the random variable data word to the second user's exchange which encrypts it with the user variable data word particular to the second user, and sends it to the second user.

摘要翻译： 电信系统包括至少两个交换机和多个用户设备。 每个设备包括用于保存该用户特定的用户可变数据字的商店。 每个交换机都设有一个存储器，用于保存与其连接的用户的所有用户可变数据字，并且每个交换机还提供有其自己的随机可变数据字。 当第一用户对第二用户进行安全呼叫时，第一用户设备使用其特定的用户可变数据字加密呼叫，并将加密的数据发送到其自己的交换机。 交换机使用特定用户变量数据字解密呼叫，并生成将用于呼叫的随机变量数据字。 交换机使用特定用户可变数据字加密随机变量数据字并将其返回给第一用户。 交换机也将随机变量数据字发送给第二用户的交换机，用第二用户特定的用户可变数据字进行加密，并将其发送给第二用户。

公开(公告)号：EP0818902A2

公开(公告)日：1998-01-14

申请号：EP97304383.9

申请日：1997-06-23

申请人： GPT LIMITED

发明人： Chopping, Geoffrey ,  Philip, Alexander Schroder

IPC分类号： H04J14/02 ,  H04L12/56 ,  H04J3/24

CPC分类号： H04J14/0227 ,  H04J14/0241 ,  H04J14/0278 ,  H04J14/0282

摘要： A Network has a non-ring architecture and is based on a transmission medium having a broadband electromagnetic spectrum and has a plurality of transmitters, each transmitter being locked to a specific wavelength and transmitting a regular frame sequence of Data Bursts, each Data Burst containing a Preamble and Tributary Identification Number. There is also a plurality of receivers each receiver being tuneable to any of the transmitters and each receiver being tuned in a corresponding definable regular frame sequence to some or all of the transmitters in order to receive the Data Bursts intended for that receiver.
The Network typically uses either optical transmission via a Passive Optical Network (PON), or a radio transmission network.

摘要翻译： 网络具有非环形架构，并且基于具有宽带电磁频谱的传输介质并且具有多个发射器，每个发射器被锁定到特定波长并且发射数据突发的常规帧序列，每个数据突发包含 前导码和支路识别号码。 还有多个接收机，每个接收机可调谐到任何发射机，并且每个接收机以相应的可定义的常规帧序列被调谐到一些或全部发射机，以便接收预定给该接收机的数据突发。 网络通常使用通过无源光网络（PON）的光传输或无线传输网络。

公开(公告)号：EP0366263B1

公开(公告)日：1996-06-12

申请号：EP89309656.0

申请日：1989-09-22

申请人： GPT LIMITED

发明人： Proctor, Richard John ,  Maddern, Thomas Slade ,  Philip, Alexander Schroder

IPC分类号： H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L49/255 ,  H04L2012/5649 ,  H04L2012/565 ,  H04L2012/5651

公开(公告)号：EP0714193A2

公开(公告)日：1996-05-29

申请号：EP95117235.2

申请日：1995-11-02

申请人： GPT LIMITED

发明人： Chambers, Gordon William ,  Philip, Alexander Schroder

IPC分类号： H04M1/72 ,  H04B3/54

CPC分类号： H04B3/54 ,  H04B2203/5408 ,  H04B2203/5437 ,  H04M1/72

摘要： A line communication system for linking a plurality of telephone subscribers to a public telephone exchange, wherein the subscribers are each located within the same general area, and wherein each subscriber is fed from the same mains electricity sub-station with mains electricity, comprises subscriber apparatus which includes a cordless telephone (CT) handset and a frequency convertor, one for each subscriber, the handset being hard wired to the mains electricity supply conductors via the frequency convertor so that CT signals at UHF are down-converted to HF for transmission through the mains electricity conductors, and a CT base station connected to the public telephone exchange, which CT base station is connected to the mains electricity supply conductors via a further frequency convertor for HF line communication purposes, a control matrix being provided in operative association with the said base station, which serves to associate an address (corresponding to a telephone number) for each subscriber as recognised by the public telephone exchange with corresponding channels assigned by the CT protocol to each subscriber whereby the public telephone exchange and the subscribers are placed in mutual two-way communication and that calls are correctly routed and billed.

摘要翻译： 一种用于将多个电话用户连接到公共电话交换机的线路通信系统，其中所述用户各自位于相同的一般区域内，并且其中每个用户从具有主电源的相同的主电力子站馈送，包括订户设备 其包括无绳电话（CT）手机和频率转换器，每个用户一个，手机通过变频器硬接线到主电源电源导体，使得UHF处的CT信号被下变频到HF以通过 主电力导体和连接到公共电话交换机的CT基站，该CT基站经由用于HF线路通信目的的另一个频率转换器连接到主电力供电导体，提供与所述主电源导体可操作地相关联的控制矩阵 基站，其用于关联地址（对应于电话号码）f 或者由公共电话交换机识别的每个用户与由CT协议分配给每个用户的相应信道，由此公共电话交换机和用户被置于相互双向通信中，并且呼叫被正确路由和计费。