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GB0524399D0
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Combating fraud in telecommunication systems
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GB0513197D0
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Determining slicing level from the bit error rate
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GB0512388D0
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Optical add-drop multiplexer in which data input at a plurality of different ports is dropped using a common bank of transponders
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GB0510752D0
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A data communications network with call servers and routing servers
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GB0503173D0
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Notification of faults in a system comprising two Ethernet networks interconnected by a synchronous transport network such as SDH
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GB0501468D0
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Pseudo-random number generator and method of operating thereof
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GB0427223D0
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Provision of telecommunication services using cross connects
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GB0425271D0
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Monitoring of optical signals
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GB0424866D0
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Protecting an Engineering Order Wire (EOW)
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GB0420686D0
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Processor arrangement having a stack memeory
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GB0420127D0
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Upgrading optical telecommunications networks
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GB0419492D0
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Monitoring and modifying communications between end nodes at an intermediate node
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GB0412574D0
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Communications system
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GB0405004D0
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Improvements in or relating to a telecommunication network
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GB0400182D0
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Module for network interface card
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GB0326160D0
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Call set-up systems
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AU2003274327A1
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Erbium doped fibres
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WO2004032383A1
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Raman amplifier
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GB0315366D0
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Improvements in or relating to communication systems
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GB0308655D0
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Optical network, and method, for the transmission of data
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