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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7411948 | Ethernet switch An Ethernet switch includes a plurality of ports, and the switch is configured to be operable within a temperature range of at least between approximately 0° C. and approximately 60° C. The switch is further configured to be operable within a non-condensing humidi... | 08/12/2008 |
| 7362771 | Reduced latency FIFO A First-In-First-Out (FIFO) block to buffer a packet having a size is presented. The FIFO block includes a receiver to receive a data frame including the packet and overhead information, and to extract the packet from the data frame. A buffer has a plurality of memo... | 04/22/2008 |
| 7334065 | Multiple data bus synchronization Disclosed is a method and circuit for synchronizing dual data buses. In one embodiment, the method includes a receiving circuit receiving first and second streams of multibit data portions transmitted via first and second parallel data buses, respectively, coupled t... | 02/19/2008 |
| 7317725 | System and method for implementing combined packetized TDM streams and TDM cross connect functions Apparatus implements combined packetized time-division multiplexed (TDM) streams and TDM cross connect functions. The apparatus includes an input buffer, a reassembly state machine, a frame buffer, and a segmentation state machine. The frame buffer includes multiple... | 01/08/2008 |
| 7317683 | Weighted fair queue serving plural output ports A data communication apparatus includes a plurality of output ports and a scheduler for assigning priorities for outbound data frames. The scheduler includes one or more scheduling queues. Each scheduling queue indicates an order in which data flows are to be servic... | 01/08/2008 |
| 7318099 | Method and apparatus for controlling the distribution of digitally encoded data in a network An apparatus and a method for controlling distribution of digital content from an device attached to a network to another device outside the network. The device receives a digital signal containing content, the digital signal having an authorization field indicative... | 01/08/2008 |
| 7310685 | Method and system for reducing look-up time in packet forwarding on computer networks A method and system for reducing the lookup time in packet forwarding on computer networks. A first lookup is performed in a memory tree to find a first protocol forwarding entry in the memory tree. The forwarding entry includes first protocol (e.g., EGP) informatio... | 12/18/2007 |
| 7272157 | Any size and location of concatenated packet data across SONET frames in a SONET signal A method and apparatus for the incorporation of any size and location of concatenated SONET frames, which carry packet data, in an SONET signal are described. In an embodiment, a method includes receiving packet data. Additionally, the method includes concatenating ... | 09/18/2007 |
| 7260092 | Time slot interchanger A digital cross connect comprises plural switching stages. Each stage has plural switches which receive plural frames of time multiplexed input data and which switch the data in time and space. Configurations of the switches change in frame synchronization at the st... | 08/21/2007 |
| 7243183 | SONET data byte switch A switch system including a plurality of input ports and a plurality of output ports for transferring data from one of the input ports to one of the output ports, and a plurality of memory devices is disclosed. The memory devices include a first memory bank configur... | 07/10/2007 |
| 7215665 | Apparatus for switching time division multiplex channels A time division multiplex switching apparatus is provided for switching channels from any number of input data streams, each of which may have any of a plurality of data rates, to any of a plurality of output data streams, each of which may likewise have any one of ... | 05/08/2007 |
| 7212524 | Multicast connection scheduling in time:space:time switching fabrics Multicast call blocking is reduced in TST switch fabrics with the aid of an m-entry data structure. Each entry corresponds to one of m timeslots, and has 2n sub-entries corresponding to n input ports and n output ports. An N-cast call X:(y→z1, z2 | 05/01/2007 |
| 7206323 | Interfacing 622.08 MHz line interface to a 77.76 MHz SONET framer A line card for use in a node of a network to connect to optical network lines is provided. The line card includes an optical interface, and a serializer/deserializer (SERDES) operating at a first frequency. The line card also includes a framer operating at a second... | 04/17/2007 |
| 7200143 | Intergrated services digital network private branch exchange capable of choosing synchronization clock source automatically An integrated services digital network private branch exchange, which is capable of automatically choosing a synchronization clock source. The integrated services digital network private branch exchange comprises a plurality of trunk chips, a plurality of subscribe ... | 04/03/2007 |
| 7197031 | Cross-connection of high bandwidth signal traffic across independent parallel shelves A serial data stream is mapped through a cross-connect via two or more parallel independent shelves. The serial data stream is split into at least two sub-streams. If the lead frame of a sub-stream contains a concatenation indicator, it is replaced by a valid payloa... | 03/27/2007 |
| 7190676 | Traffic manager, gateway signaling and provisioning service for all packetized networks with total system-wide standards for broadband applications including all legacy services Broadband integrated services are performed via digital, channelized or optically coded networks by a system which organizes, interfaces, provisions, loads and controls, in real time, the transport of grouped or organized information (such as packetized cell data) t... | 03/13/2007 |
| 7184662 | Switching network A two-stage switching network that takes data from an input and first switches it through a space stage into a buffer. Data from the buffer is then switched in a time-space stage to an output. Each buffer, advantageously, holds one frame of data. Further, there are ... | 02/27/2007 |
| 7184996 | Method for concatenating table-format data A plurality of table-formatted data is joined by dividing each table-formatted data into one or more information blocks consisting of a value list containing item values in the order of item value numbers corresponding to item values belonging to a particular item a... | 02/27/2007 |
| 7173914 | Communication node receipt of node-output information from processorless central equipment A first communication node of a plurality of communication nodes connected with processorless central equipment in a system sends one or more first portions of node-output information to the processorless central equipment. One or more additional communication nodes... | 02/06/2007 |
| 7061908 | Switch structure This invention relates to a switch structure and more particularly to a switch structure for circuit switching of telecommunications signals, such as, but not exclusively, data. A switch arrangement for a Group switch adapted to switch communication signals is provi... | 06/13/2006 |
| 7039072 | Methods and apparatuses for time and space switching of SONET framed data Multiple streams of bits are received. One or more bits are selected from a stream of bits based, at least in part, on a space control register value and a time control register value. In one embodiment, a time control register stores a value indicating a selected b... | 05/02/2006 |
| 6975790 | Apparatus for forming a WDM signal having orthogonally polarized optical channels Embodiments of an apparatus for forming a WDM signal having orthogonally polarized optical channels are disclosed. Utilizing the optical channels formed using non-polarization-maintaining components, the apparatus selectively controls a state of polarization (SOP) o... | 12/13/2005 |
| 6914902 | Distributed semi-rearrangeable non-blocking algorithm for clos networks A marching algorithm for the selection of middle stage switch elements in a network uses an arbitrary but settled sequence in which middle stage switch elements are sampled. The sequence is applied in the forward direction to find an appropriate middle stage switch ... | 07/05/2005 |
| 6885663 | Time/space switching component with multiple functionality A time/space switching component is provided with multiple functionality that includes a time switching unit, of a space switching unit of a data channel sequence correction unit and of a control unit. As a result of corresponding mode selection, the different funct... | 04/26/2005 |
| 6885664 | Distributed switching system and method with time-based routing This invention describes a method for transmitting and forwarding packets over a switching network using time information. The network switches maintain a common time reference, which is obtained either from an external source (such as GPS—Global Positioning Syste... | 04/26/2005 |
| 6842422 | Data striping based switching system A switching system for a data stream utilizing striping with a parity stripe, so if a fabric of the system fails, the data stream can still be reconstructed with the parity stripe. The system uses receive and transmit interfaces which implement space division, and f... | 01/11/2005 |
| 6795432 | Method for searching composite path for virtual container signals in CLOS switching network Methods for searching a composite path for virtual container signals in a similar CLOS switching network is provided that is capable of switching various signal tributaries. The method can include managing a link use state between each state with a linked list and a... | 09/21/2004 |
| 6704307 | Compact high-capacity switch A switching unit, equipped with a plurality of port cards and a plurality of switch cards connected in a non-parallel fashion to the port cards. Each port card has a first M-way commutator and a second M-way commutator, wherein the total number of first M... | 03/09/2004 |
| 6674752 | Switch matrix among tributaries of a telecommunication network and managing method thereof A switch matrix among tributaries of a telecommunication network operating on flows of data which are arranged according to SDH protocol, said switch matrix comprising a set of parallel branches, each of said branches comprising at least a space stage abl... | 01/06/2004 |
| 6512765 | Exchange An exchange equipment using STM able to achieve an improvement of an efficiency of use and an improvement of ease of increase of terminal cards, that is, an STM type exchange, including a time switch, for performing exchange processing of time division mu... | 01/28/2003 |
| 6470011 | Time division multiplex highway switch control system and control method of T-S-T three-stage switches in electronic switching system A highway switch control system for controlling a time division multiplex highway switch of T-S-T three-stage switches in a multiprocessor typed electronic switching system, comprises a plurality of sets of first switches of time sharing switching method,... | 10/22/2002 |
| 6449292 | Time division multiplexed synchronous state machine having state memory An implementation of a synchronous state machine, responsive to a time division multiplexed external input signal having plural time slots in a repetitive structure, has all of its flip-flop outputs hooked up to a state memory so that the state produced b... | 09/10/2002 |
| 6438126 | Arrangement and method relating to communications systems A communications switching system includes a switching network and a number of access units. The switching network includes a number of multiplexing arrangements and a number of switching arrangements. In order to provide redundancy in the system, a numbe... | 08/20/2002 |
| 6212179 | Single-type fabric card networks and method of implementing same An expandable network constructed from a plurality of identical network fabric cards which uses a plurality of selected row address bits to route connection paths between adjacent columns of interconnecting switches and a software algorithm for implementi... | 04/03/2001 |
| 5815489 | Self-healing ring switch and method of controlling the same A self-healing ring switch transmission system uses space division switches disposed upstream and downstream of an add drop switch in order to determine a correspondence with a plurality of ring-switch modes by merely changing the software. This is accomp... | 09/29/1998 |
| 5649217 | Switching system having control circuit and plural buffer memories for data exchange in asynchronous transfer mode A multimedia data processing apparatus for exchanging asynchronous transfer mode cells, each cell having a data portion and a header portion including destination information. Cells input through input lines are stored in locations in respective buffer me... | 07/15/1997 |
| 5600631 | Self-healing ring switch and method of controlling the same In order that the various ring-switching modes of 2-Fiber BLSR, 4-Fiber BLSR and UPSR may be switched merely by changing a software, space division switches are disposed across an add drop switch, and one output drop switch and one output of the second sp... | 02/04/1997 |
| 5504739 | Reconfigurable switch memory 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, fo... | 04/02/1996 |
| 5329524 | TDM circuit-switching arrangement that handles frames of different sizes A time-division multiplexed circuit switch (100) handles different-size time-division multiplex frames (30, 40, 50) in a single, shared, time-space-time switching fabric. Both time slot interchange stages (131,141) and a time-multiplexed space stage (120)... | 07/12/1994 |
| 5303077 | Optical switch and switching module therefor A switching device for being connected to switch optical input signals received on a plurality of optical input signal lines into optical output signals on a plurality of optical output signal lines; each device has a time slot interchanger or a wavelengt... | 04/12/1994 |
