Abstract: The system describes one aspect of an apparatus configured to implement a security state for preventing access to a storage device, including a communications hub including an upstream port and a plurality of downstream ports. A first downstream port of the plurality of downstream ports is connected to the storage device, and one or more other downstream ports of the plurality of downstream ports are configured to connect to one or more external devices. The apparatus includes one or more processors configured to monitor the upstream port, determine a connection state of the upstream port, and implement the security state for preventing access to the storage device based on the determined connection state.

Abstract: A packet switch device for providing visibility of traffic in a network includes a housing, a processing unit located in the housing, a first network port communicatively coupled to the processing unit, wherein the first network port is configured to communicate with the network, a second network port communicatively coupled to the processing unit, wherein the second network port is configured to communicate with the network, and at least one instrument port communicatively coupled to the processing unit, the at least one instrument port configured to communicate with a first network monitoring instrument, wherein the processing unit is configured to support a movement of packets from one or both of the first and second network ports to the at least one instrument port.

Abstract: Input/output (I/O) operation requests from pageable storage mode guests are interpreted without host intervention. In a pageable mode virtual environment, requests issued by pageable storage mode guests are processed by one or more processors of the environment absent intervention from one or more hosts of the environment. Processing of the requests includes manipulating, by at least one processor on behalf of the guests, buffer state information stored in host storage. The manipulating is performed via instructions initiated by the guests and processed by one or more of the processors.

Abstract: Methods and systems for mobile phone location within a digital distributed antenna system (DAS) are provided. In one embodiment, a method comprises: receiving a request for location services from a subscriber unit located within a digital DAS, the digital DAS including a first partition of bandwidth for transporting digitized RF signals of one or more modulated signals and a second partition of bandwidth for an Ethernet pipe transporting IP formatted data; routing the request for location services to a subscriber locator center; instructing locator receivers within a geographical area of the digital DAS to listen for a signal from the subscriber unit; listening for the signal at a first locator receiver; when the signal is observed, recording a time the signal was received and generating subscriber unit ranging data; and transmitting subscriber unit ranging data back to the subscriber locator center in an IP formatted message via the Ethernet pipe.

Abstract: Methods and systems for mobile phone location within a digital distributed antenna system (DAS) are provided. In one embodiment, a method comprises: receiving a request for location services from a subscriber unit located within a digital DAS, the digital DAS including a first partition of bandwidth for transporting digitized RF signals of one or more modulated signals and a second partition of bandwidth for an Ethernet pipe transporting IP formatted data; routing the request for location services to a subscriber locator center; instructing locator receivers within a geographical area of the digital DAS to listen for a signal from the subscriber unit; listening for the signal at a first locator receiver; when the signal is observed, recording a time the signal was received and generating subscriber unit ranging data; and transmitting subscriber unit ranging data back to the subscriber locator center in an IP formatted message via the Ethernet pipe.

Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

Abstract: A method, apparatus, and computer instructions for a storage subsystem. This subsystem includes controller devices, storage devices, and a communications network. The communications network connects the controller devices and the storage devices. The communications network also includes a set of diagnostic outputs. The set of diagnostic outputs is configured to output data sent between two devices from the controller devices and the storage devices for monitoring.

Abstract: In one embodiment, the invention provides a method for establishing links between Fiber Channel (FC) protocol node devices through a FC fabric. In the method a common name is assigned to a pair of ports. Each port in the pair is located on first and second FC node devices, respectively. The common name-to-port assignment is then stored within a name server for the FC fabric. Each port in the pair of ports is configured to query the name server to establish an identity for the other port in the pair of ports based on the common name. The first and second FC node devices are configured to create a link between the pairs of ports that have been assigned a common name.

Abstract: A method for processing data through a system for accessing and transmitting different data frames in a digital transmission network includes the following steps: the virtual interface device classifying the data frames, and the virtual interface device outputting the data frames to device interfaces. The system includes a user-network interface (UNI), which is used to connect to a user's network, a network-network interface (NNI), which is used to connect to said digital transmission network to transfer data, a mapping/demapping device, a virtual interface device, which couples with the UNI and couples with the NNI via the mapping/demapping device, and a control device, which couples with the virtual interface device to control it to access and transmit the data frames.

Abstract: Methods and apparatuses are described for improving information transfer over a universal serial bus (USB). In some embodiments, an apparatus includes a USB-compliant near-end link and control logic coupled with the USB-compliant near-end link. The control logic may translate a USB-compliant reflective signal received from a USB host to a terminated signal. Other embodiments are described and claimed.

Abstract: A method and system including apparatus for detecting and blocking an invalid request to a target wherein fiber channels interconnect the data processing configuration. A request made from a hub such as a fabric switch to an internal fiber channel arbitrated loop is blocked by substituting IDLE characters for the frames of data included with the request. The substitution of IDLE signals can also occur within an internal fiber channel arbitrated loop system where access is blocked to a confidential data storage system. If the request is legitimate, the data frames are passed to the target and the requested data is transmitted back to the requester. If the request is refused as being an unauthorized request, the data frames are replaced with IDLE characters and no transfer of confidential data occurs.

Abstract: Method and apparatus are described for improving information transfer over USB. In one approach, hub-based extension is realized wherein power is distributed using auxiliary wiring distinct from signal and power wiring present in conventional USB cabling. Additional signals allow optimization of power distribution for powering attached devices, and for detecting and handling illegal connection configurations. In another approach, improvements are realized through use of alternative signaling techniques which eschew reflective and high-speed common-mode signaling. Described are various configuration, media and signal-protocol combinations, including implementations containing embedded hubs. Methods ensuring reliable system behavior are also described, including determination of extension path delay and use of topology-enforcement hubs.

Abstract: The Fibre-Channel flow control mechanism is augmented to facilitate efficient data exchange between Fibre-Channel ports over extended distances. A supplemental buffer mechanism may be maintained as part of an interface to a transport network used to carry Fibre-Channel traffic. The transport network interface makes a remote Fibre-Channel port aware of the augmented local receiver buffer capacity by intercepting certain frames used in link establishment and substituting an enhanced buffer capacity for the local Fibre-Channel port's internal buffer capacity. This technique provides improved throughput and readily accommodates large distances and large frame sizes.

Abstract: A twisted pair and/or coaxial cable fed, integrated residence gateway controlled set-top device provides a plurality of services. One service is lifeline service which may be provided over the coaxial cable via a cable modem of the integrated residence gateway or over the twisted pair facility. An integrated residence gateway is coupled to either or both of the coaxial cable or twisted pair and distributes the bandwidth facilities available over either service vehicle to customer devices including a set top box. A network service platform (NSP) is coupled to a cable facilities management platform (FNP) for providing services for cable television subscribers as well as telecommunication service subscribers such that an interexchange or telephone company would control the network services to the subscribers. The NSP architectural concept may permit the interexchange or telephone company to be the single service provider of information to subscribers on an equal basis.

Abstract: A synchronization device for a synchronous digital message transmission system producing a synchronous output signal including successive transport modules synchronized to a frame clock from a digital input signal. The synchronization device includes a receiver unit for receiving the input signal, a packet assembly device for packaging the input signal into subassemblies of the transport modules, a buffer memory, a writer for writing data bits of the input signal out of the subassemblies into the buffer memory with a write clock, a reader, for reading data bits out of the buffer memory with a read clock in order to form the output signal, and a sending unit (SO) for sending synchronous output signals. The effective bit rate of the subassemblies compared to the standardized value is either lowered or raised by selecting the write clock lower than the read clock.

Abstract: A storage area network that includes a monitoring component, wherein the monitoring component is capable of characterizing data flowing into or out of at least one port associated with a fiber channel director or switch so as to enable an operator to ascertain some usable information regarding the characterized data and/or its impact on the network. In many embodiments, the monitoring component provides a visual or audible signal to the operator regarding a particular data component. The present invention is further directed to methods for monitoring a storage area network, in particular, at least one port associated therewith.

Abstract: This invention provides a network server platform forming part of a new local loop network architecture designed to overcome the limitations of current art local access loop technologies. This invention allows end users to seamlessly connect to the numerous disparate networks in order to access the multiplicity of services that these networks have to offer. The network server platform allows interconnection between networks with varying networking protocols. The network server platform is a key component of the new architecture and interacts to allow for easy and seamless integration with network components on both the local access level as well as the core network. The network server platform offers external networking capabilities to the local access network. As a result, the local access network terminates on the network server platform. The network server platform provides subscribers or end users the capabilities to access services from a multiplicity of disparate networks offering a variety of services.

Abstract: This invention provides a network server platform forming part of a new local loop network architecture designed to overcome the limitations of current art local access loop technologies. This invention allows end users to seamlessly connect to the numerous disparate networks in order to access the multiplicity of services that these networks have to offer. The network server platform allows interconnection between networks with varying networking protocols. The network server platform is a key component of the new architecture and interacts to allow for easy and seamless integration with network components on both the local access level as well as the core network. The network server platform offers external networking capabilities to the local access network. As a result, the local access network terminates on the network server platform. The network server platform provides subscribers or end users the capabilities to access services from a multiplicity of disparate networks offering a variety of services.

Abstract: A server, and a number of client stations interconnected by a token ring network, specifically an FDDI-II network. The FDDI-II ring is connected in a star-ring topology, with the server and the clients preferably connected to the network through a wiring closet, as is the usual practice for such a topology. The server has separate physical connections to the single FDDI-II ring with each physical connection to the ring providing access to a separate physical domain. This partitions the same ring into different physical domains, so that an increase in the total effective bandwidth of the network is achieved by the server reallocating the same isochronous bandwidth in each of the domains for reuse by the server. An allocation of bandwidth in an isochronous channel in one domain can be reused by the server in another physical domain.

Abstract: There is provided a different system transfer method for a ring transmission system and a transmission apparatus for transferring the ring transmission system constructed in the UPSR system to the BLSR system while a line is in service. A control board of the UPSR system is replaced by a control board of the BLSR system. By changing over a path switch, a multiplexing/demultiplexing conversion board of the UPSR system on the non-operating side is replaced by a first multiplexing/demultiplexing conversion board of the BLSR system which is set so as to operate in the UPSR system. Also, by changing over the path switch again, a multiplexing/demultiplexing conversion board of the UPSR system on the non-operating side is replaced by a second multiplexing/demultiplexing conversion board of the BLSR system which is set so as to operate in the UPSR system.

Abstract: A method and apparatus for increasing the throughput of a communications internetworking device. The method involves the generating, by internetworking device hardware, of a predetermined code vector in response to the current state of the communications internetworking device and information contained in a data packet received by the internetworking device. In response to the hardware generated predetermined code vector, a predetermined software routine is executed by a microprocessor in the internetworking device which controls how the data packet is to be transmitted to its destination. By using hardware to generate the code vector, time is saved over having software determine how the internetworking device is to handle the data packet.

Abstract: A physical layer (PHY) device which can operate as a conventional PHY or as an intelligent repeater in a communication system. The PHY device supports four optional modes which may be enabled by programming control register bits with a microcontroller. These optional modes are: pass all symbols, enable noise filter, pass violation symbols and pass line states. During operation as an intelligent repeater, the pass all symbols, pass violation symbols and pass line states modes are enabled. The intelligent repeater allows errors in a data stream to be encoded and repeated without filtering to a downstream station. The intelligent repeater also allows line states to be repeated without station management software. A single intelligent repeater may be used to couple two stations or multiple intelligent repeaters may be connected to form multi-port repeater boxes which can be connected to facilitate more reliable connections between stations.

Abstract: A telecommunications system comprises two groups of intelligent platforms in a common carrier's network. Each intelligent platform includes an application or a service for processing a call related transaction. The intelligent platforms in each group are arranged in the Local Area Network configuration, such as a Fiber Distributed Data Interface, to transfer the call related transaction to each other for further processing. Each group of the intelligent platforms comprises a node on the Wide Area Network, such as an Asynchronous Transfer Mode (ATM), which provides the high speed support for transferring the call related transaction among the intelligent platforms of each group. The combination of these two transport mechanisms will provide a high speed interface and sufficient bandwidth for the projected increase in traffic volume.

Abstract: A communication adapter transfers synchronous or multimedia and asynchronous or packet data between a network which may be of a FDDI type and a host system in real time. The adapter can manage data transfer in both directions between the system and the network and automatically switches between multimedia and packet data while holding the token. The adapter includes a queue manager having a synchronous threshold register and counter and a packet data threshold register and counter. The queue manager is coupled among a host bus; a storage means; a FDDI network; and bandwidth control logic. The queue manager in conjunction with the bandwidth control logic can dynamically switch the adapter from transmitting packet or synchronous data to the FDDI without exceeding bandwidth. The queue manager is also adapted to initiate capture of the token on a FDDI and commence transmission of synchronous or packet data frames to the ring as early as possible.