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公开(公告)号：EP0558291A2
公开(公告)日：1993-09-01
申请号：EP93301358.3
申请日：1993-02-24
申请人： GPT LIMITED
发明人： Chopping, Geoffrey
CPC分类号： H04Q11/06 , H04J2203/0005 , H04J2203/0012 , H04Q11/0478
摘要： A reconfigurable switch memory which is applicable to time switches and space switches enables two very different time switching functions to be efficiently implemented by one type of switching unit. A reconfigurable switching device is provided which, for instance, can work in either one bit or five bit mode, the granularity of the switch being varied.
摘要翻译： 适用于时间开关和空间开关的可重构开关存储器使得两种截然不同的时间切换功能能够通过一种类型的开关单元有效地实现。 提供了可重新配置的交换设备，其例如可以以一位或五位模式工作，交换机的粒度是变化的。
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公开(公告)号：EP0460835A3
公开(公告)日：1993-03-03
申请号：EP91304709.8
申请日：1991-05-24
申请人： GPT LIMITED
CPC分类号： H04J3/0685 , H04J3/0623
摘要： The invention concerns a method of pointer processing a digital TDM data stream at a node of a synchronous SDH transmission network so as to justify the data stream on transmission, the data stream having a specified line frequency and being composed of frames, each frame containing a reference word, and the node of the transmission network having a node frequency, the method comprising storing the incoming data stream in a buffer store at the node, using the line reference of the incoming data stream to extract a data pointer from the data stream for each frame, which data pointer indicates the location of the reference word of that frame in the buffer store, and characterised in that a timing pointer is extracted from the incoming data stream utilising the line reference and a line clock the frequency of which is a multiple of the line reference; the timing pointer so extracted is converted into a reference value by utilising the node reference and a node clock; the reference value is utilised to generate a node timing pointer; the node timing pointer is compared with a read address and data pointer; and read-out from the buffer store is justified in accordance with the results of the comparison.
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公开(公告)号：EP0419019A1
公开(公告)日：1991-03-27
申请号：EP90308558.7
申请日：1990-08-03
申请人： GPT LIMITED
CPC分类号： H04Q11/04 , H04L29/06 , H04L49/30 , H04L49/555
摘要： The invention concerns telecommunication apparatus in which data messages are routed across a switch. The messages are of the kind comprising a message portion and an incoming message identity portion and the apparatus comprising means (22, 23) for generating from the incoming message identity portion an outgoing message identity portion, means including a switch (21) utilising the incoming and outgoing message identity portions to route the message to an output port, and characterised in that the apparatus further comprises means (24, 25) for utilising the outgoing message identity portion to generate a further message identity portion and means (26, 27) for comparing the incoming and further message identity portions to detect faults.
摘要翻译： 本发明涉及通过交换机路由数据消息的电信设备。 所述消息是包括消息部分和传入消息标识部分的类型，并且所述装置包括用于从所述输入消息身份部分生成外向消息标识部分的装置（22,23），包括利用所述传入的交换机（21）的装置 以及输出消息身份部分以将消息路由到输出端口，并且其特征在于，所述设备还包括用于利用所述传出消息身份部分来生成另外的消息身份部分的装置（24,25）以及用于 比较传入和进一步的消息标识部分来检测故障。
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公开(公告)号：EP0317055A2
公开(公告)日：1989-05-24
申请号：EP88307864.4
申请日：1988-08-25
申请人： GPT LIMITED
IPC分类号： H04Q11/04
CPC分类号： H04Q11/08
摘要： A telecommunications digital switch for switching channels of time division multiplexed (TDM) signals on a multiplicity of switch input and output paths, the switch comprising:
input and output switching stages and a central switching area:
the input and output switch stages each comprising arrays of DSM (as herein defined);
the central switching area comprising first and second arrays of DMR (as herein defined), wherein the DMR are so preprogrammed with a channel allocation address pattern that all channel routes through the central switching stage experience the same time delay;
the arrangement being such that all or a major part of the channel routes through the switch are constrained to have delays such that all channels are displaced to positions within (n) or (n + 1) subsequent time frames of the TDM system where (n) is an integer, selected from the range 0, 1, 2.摘要翻译： 一种用于在多个开关输入和输出路径上切换时分复用（TDM）信号的信道的电信数字开关，所述开关包括：输入和输出开关级和中央交换区域：所述输入和输出开关级各自包括： DSM（如本文定义）; 中央交换区域包括第一和第二DMR阵列（如此处所定义的），其中DMR如此预编程有通过中央交换级的所有信道路由经历相同的时间延迟的信道分配地址模式; 该布置使得通过交换机的信道路由的全部或大部分被限制为具有延迟，使得所有信道被移位到TDM系统的（n）或（n + 1）个后续时间帧内的位置，其中（n ）是一个整数，从0，1，2范围内选择。
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15.发明公开Security arrangement for a telecommunications exchange system 失效Sicherheitsanordnungfüreine Fernmeldevermittlungsstelle。
公开(公告)号：EP0254559A2
公开(公告)日：1988-01-27
申请号：EP87306499.2
申请日：1987-07-22
申请人： GPT LIMITED
CPC分类号： H04Q11/0421 , H04M3/244 , H04Q11/04
摘要： The security arrangement is for a telecommunications system having two security planes, a plurality of peripherals, a plurality of peripheral communication controllers; and switching arrangements interconnecting the peripheral communication controllers. To determine a faulty security plane, a duplex path is provided between the controllers, and, using this path, a controller automatically performs path checks on one of the security planes. If the plane is found to be not faulty, the controller sends data associated with that plane to the peripheral with which it is in communication.
摘要翻译： 该安全装置用于具有两个安全平面，多个外围设备，多个外围通信控制器的电信系统; 以及互连外围通信控制器的交换装置。 为了确定一个有缺陷的安全平面，在控制器之间提供双工路径，并且使用该路径，一个控制器自动在其中一个安全平面上执行路径检查。 如果发现飞机没有故障，则控制器将与该飞机相关联的数据发送到与之通讯的外设。
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公开(公告)号：EP0550169B1
公开(公告)日：1998-01-14
申请号：EP92311219.7
申请日：1992-12-09
申请人： GPT LIMITED
CPC分类号： H04L7/048 , H04J3/0608
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公开(公告)号：EP0674407A2
公开(公告)日：1995-09-27
申请号：EP95301872.8
申请日：1995-03-21
申请人： GPT LIMITED
发明人： Chopping, Geoffrey
IPC分类号： H04J3/07
CPC分类号： H04J3/076
摘要： A telecommunications transmission system carries multiple tributary data streams with SDH compatible multiplexing and demultiplexing arrangements that include a tributary justification algorithm utilising both byte and bit justification means as well as a double-ended payload protocol. The byte justification means employs an offset clock with a nominal constant frequency offset from the transmission system clock so that the offset clock can be used to force a regular rate of byte justifications of constant sign. The bit justification means employs the difference between the tributary clock and the offset clock to determine the bit justifications necessary to multiplex the tributary data stream and the bitjustifications are normally of complementary sign to the forced regular byte justifications except where the frequency of the offset clock lies between the frequency of the transmission clock.
摘要翻译： 电信传输系统携带具有SDH兼容复用和解复用布置的多个支路数据流，其包括利用字节和位对齐装置以及双端有效载荷协议的支路对齐算法。 字节调整装置采用具有来自传输系统时钟的标称恒定频率偏移的偏移时钟，使得偏移时钟可用于强制常数符号的字节调整率。 位对齐方式采用支路时钟和偏移时钟之间的差异来确定多路复用支路数据流所需的位对齐方式，而对于强制正则字节对齐来说，正确的补码通常是补码的，除了偏移时钟的频率位于 传输时钟频率之间。
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公开(公告)号：EP0644705A2
公开(公告)日：1995-03-22
申请号：EP94306011.1
申请日：1994-08-15
申请人： GPT LIMITED
IPC分类号： H04Q11/04
CPC分类号： H04Q11/0478
摘要： In a telecommunications system in which narrowband or guiding services already exist, different service rates, either fixed or variable may be required. A further service switch is connected in parallel with the existing narrowband or guiding switch, the further service switch being similarly controlled in response to the guiding signalling.
摘要翻译： 在已经存在窄带或指导服务的电信系统中，可能需要固定或可变的不同服务费率。 另外的服务交换机与现有的窄带或引导交换机并联连接，另外的服务交换机响应于引导信令被类似地控制。
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19.发明授权
公开(公告)号：EP0282229B1
公开(公告)日：1993-11-03
申请号：EP88301843.4
申请日：1988-03-02
申请人： GPT LIMITED
CPC分类号： H04J3/0688 , H04J3/0608
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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
IPC分类号： H04L9/16
CPC分类号： H04L9/0838 , H04L9/0891 , H04L63/0428 , H04Q11/0435 , H04Q2213/13209 , H04Q2213/1333 , H04Q2213/13339
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