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| Number | Title | Issue Date |
| 6914900 | Method and apparatus for connecting communication device via IP network Disclosed is a method of connecting a telephone via an IP network. An exchange on the originating side (1) evaluates voice quality along a route through the IP network to an exchange on a terminating side when a call originate request has been issued to connect the ... | 07/05/2005 |
| 6915324 | Generic and dynamic mapping of abstract syntax notation (ASN1) to and from interface definition language for network management A system and method for generic and dynamic mapping of managed object metadata. The data to be mapped may include type information about an attribute, action, or notification of a managed object. The first data type is entered into the mapping system, and then a cor... | 07/05/2005 |
| 6915457 | Apparatus and method for monitoring messages forwarded between applications An apparatus and method of monitoring messages forwarded from a first application to a second application each filter messages to produce a designated set of messages. Analysis of the designated set often can determine the source of an application error. To that end... | 07/05/2005 |
| 6914884 | Communication control circuit The invention provides a communication control device that includes a self-diagnostic test circuit capable of executing an operation test. The communication control circuit includes a PHY circuit on an LSI with little trouble, and at a operating speed that is equiva... | 07/05/2005 |
| 6912202 | Arrangement for testing network switch expansion port using external logic to emulate connected expansion port A network switch chip having an expansion port configured for transferring data according to a prescribed bus protocol is tested using an external logic unit (e.g., a field programmable gate array) configured to emulate a connected expansion port. The external logic... | 06/28/2005 |
| 6909894 | Echo plug for a wireless telephone Echo plugs are plugged into the hands-free jacks of wireless telephones to facilitate testing. One echo plug has a pin and a circuit. The pin is physically compatible with the hands-free jack of a wireless telephone. The pin has a speaker connection and a microphone... | 06/21/2005 |
| 6907541 | System for recovering received data with a reliable gapped clock signal after reading the data from memory using enable and local clock signals A system for reliably receiving data includes a memory, write logic, and read logic. The write logic receives data and an unreliable clock signal and writes the data to the memory using the unreliable clock signal. The read logic generates a gapped clock signal and ... | 06/14/2005 |
| 6907532 | Communication node, communication network and method of recovering from a temporary failure of a node An IPsec-capable node 2, such as a security gateway 2, is provided for a virtual private network 1. The security gateway 2 contains a CPU 4 having a volatile memory 5 in which is stored, among other things, a security associ... | 06/14/2005 |
| 6907000 | Advanced packet transfer with integrated channel monitoring A method and apparatus for transmitting packets of data over a packet-switched network and for monitoring the transmission characteristics associated with the transmission is disclosed. In one configuration the method and apparatus is configured to interface with a ... | 06/14/2005 |
| 6904019 | Identifying a pattern in a data stream For identifying or localizing a serial data stream in a deserialized output provided at a plurality of n output ports (PORT1-PORT5), a pattern recognition is provided at each one of the plurality of n output ports (PORT1-PORT5) for recogn... | 06/07/2005 |
| 6901358 | Communication media simulation for a service provider A simulation system that simulates a length of communication media is disclosed that is tunable. Examples of communication media include wire, coaxial cable, and fiber. The simulation system is comprised of a communication media simulator system. The communication m... | 05/31/2005 |
| 6901593 | Active queue management with flow proportional buffering A technique for an improved active queue management scheme which dynamically changes its threshold settings as the number of connections (and system load) changes is disclosed. Using this technique, network devices can effectively control packet losses and TCP timeo... | 05/31/2005 |
| 6894980 | Automated method and system for verifying end-to-end connectivity in a broadband network An automated method as system for verifying end-to-end connectivity in a broadcast network such as an xDSL network including a plurality of elements such as ATM switches coupled to a subscriber modem. The method and system includes determining each of the elements i... | 05/17/2005 |
| 6891851 | Method and apparatus for communicating maintenance messages and/or test messages of digital subscriber line services A subscriber's data circuit between channel bank and the customer premises carries fractional T1 bandwidth on a digital subscriber line (DSL) circuit. For example, for an ISDN rate digital subscriber line (IDSL), the circuit between the network termination at the cu... | 05/10/2005 |
| 6885973 | Alarm facilitator and method for analyzing computer hardware alarms The present invention provides a system and method for analyzing hardware alarms in a telecommunications digital cross-connect system. The present invention also relates to a system and method for automating the process of analyzing hardware failures that cause path... | 04/26/2005 |
| 6879827 | Testing a communication network with a shared test port A system for testing a communication network includes a test system and a cross-connect system. The test system generates a plurality of independent low data rate test signals with first data rates. The test system combines the independent low data rate test signals... | 04/12/2005 |
| 6873599 | Apparatus and method for error isolation in hybrid communications systems A hybrid telecommunications component in accordance with the principles of the present invention affords loopback test capabilities across boundaries between circuit switched and packet switched components. A loopback test which encompasses at least a portion of the... | 03/29/2005 |
| 6873598 | Embedded cell loopback method and system for testing in ATM networks The present invention relates to a method and apparatus for testing components in ATM networks utilizing loop-back based ATM layer testing. The method and apparatus utilize interfaces and identifier codes to send and loop-back test cells along portions of virtual ch... | 03/29/2005 |
| 6865158 | ATM switch with OAM functions An ATM switch allowing simplified OAM processing only on the line incoming side is disclosed. An incoming line circuit has a header conversion table storing information indicating whether the system is an end point of an OAM processing flow for each connection and a... | 03/08/2005 |
| 6862266 | Loop test apparatus of packet routing bus in communication system and loop test method A loop test apparatus of a packet routing bus in a communication system and a loop test method thereof capable of testing entire functions of the packet routing bus of a full-duplex transmission mode and transmitting and receiving nodes by adding a loop test functio... | 03/01/2005 |
| 6850980 | Content routing service protocol Layer 7 switching may be accomplished using one or more caches placed throughout a computer network. Changes to a file on a server may be detected and propagated throughout the network. At the switch or router level, once notification of changes to a file is receive... | 02/01/2005 |
| 6834078 | Test facility for transceiver station Test circuitry for a transceiver is described which allows tests to be conducted on a transmission loop without requiring decoding by rake fingers. According to one embodiment, a receiver for receiving a test signal includes a detecting circuit set up in accordance ... | 12/21/2004 |
| 6834139 | Link discovery and verification procedure using loopback Systems and methods for link discovery and verification technique that minimize the need for line termination resources that generate and interpret packets. Of two nodes verifying a link to one another, only one node need have any line termination capability. The no... | 12/21/2004 |
| 6834367 | Built-in self test system and method for high speed clock and data recovery circuit A built-in self test system for testing a clock and data recovery circuit. The present invention provides a built-in self test circuit which operates with high speed phase lock loop. The built-in circuit comprises data generating means for generating a test data byt... | 12/21/2004 |
| 6825801 | Outer loop test generator for global positioning system The present application discloses a global positioning satellite emulator which produces an L-1 test signal of a particular user selected global positioning satellite for testing the capacity of a GPS receiver to lock on to the signal of the selected satellite and t... | 11/30/2004 |
| 6826156 | Loopback processing method and apparatus A loopback processing method includes detecting a loopback at a first entity in a wide area network. The detection is accomplished by recognizing that a “memorized” frame has returned on the same communications interface within a given period of time. The time i... | 11/30/2004 |
| 6826590 | Block-oriented control system on high speed ethernet A distributed control system architecture (HSE) provides an open, interoperable solution optimized for integration of distributed control systems and other control devices in a high performance backbone, provides an open, interoperable solution that provides system ... | 11/30/2004 |
| 6819924 | Universal quality measurement system for multimedia and other signals A method for measuring perceptual quality of voice signals, audio signals, audio-video signals, and multimedia signals in communication equipment in an operational embodiment communicates a processed test signal via a network from a first device to a second device. ... | 11/16/2004 |
| 6816462 | System and method to determine connectivity of a VPN secure tunnel A method and system for determining the connectivity of a virtual private network IP security (IPSec) tunnel between two network elements by originating a plurality of connection tests between the network elements. The first network element transmits a connectivity ... | 11/09/2004 |
| 6778147 | Antenna apparatus To realize an antenna apparatus capable of measuring a calibration factor accurately and further, capable of estimating an arrival direction of a received signal by composing a calibration circuit by using a directional coupler. The antenna system includes L-number ... | 08/17/2004 |
| 6775239 | Checking communication-path data in MPLS communication scheme A method of checking communication-path data in a system, in which a router connecting first and second networks operating on different protocols is connected to a switch of the second network, includes the steps of changing the router and the switch from a normal m... | 08/10/2004 |
| 6757255 | Apparatus for and method of measuring communication performance A TCP communications performance measuring device 2 obtains an effective bandwidth (a transfer speed) representing performance in TCP communications, wherein performance indexes or both of a round trip time and a maximum segment size which are obtained based ... | 06/29/2004 |
| 6751761 | Method and apparatus for testing network, and recording medium The present invention relates to a node connection test method and a recording medium by which a test can be carried out in a system having a plurality of nodes (network connecting devices such as personal computers and workstations) connected to a network such as a... | 06/15/2004 |
| 6741555 | Enhancement of explicit congestion notification (ECN) for wireless network applications An Explicit Congestion Notification (ECN) method is disclosed for wireless applications to avoid network congestion in a TCP/IP packet-switched network. Such method comprises transmitting, at a source node, data packets to a destination node, via at least an interme... | 05/25/2004 |
| 6731597 | Method and a system for interconnecting ring networks A system and a method for maintaining operation of a signaling interconnection between a first ring network and a separate second ring network. Each ring network comprises two communication paths transmitting data in opposite directions and at least two nodes connec... | 05/04/2004 |
| 6731648 | Method and apparatus for transmitting a return signal in a loop network In a communications network, which may be a broadband optical network, a packet is transmitted from a source node to a destination node on a looped signal path. A return signal, which may function as an acknowledgement of the original signal, is transmitted back to ... | 05/04/2004 |
| 6724728 | Method and system for distributed processing of traffic in a telecommunications node A method and system for distributed processing of traffic in a telecommunications node includes receiving a traffic stream at a line card of the telecommunications node. The traffic stream includes a plurality of discrete cells. The cells are forwarded from the line... | 04/20/2004 |
| 6711136 | Code-based filtering mechanism for reducing data-induced latching loopback in digital data service device To reduce the possibility of a data-induced latching loopback, a digital data services device integrates one or more digital control code-based filtering routines into a test code sequence-based latching loopback scheme. The filtering routines include a ‘garbage... | 03/23/2004 |
| 6704287 | Enabling smart logging for webtone networks and services Methods and apparatus for providing enhanced telecommunications services troubleshooting in multi-carrier telecommunications networks are described. Troubleshooting information gathering is initiated by launching a "Test Service Call with a Travelling Log... | 03/09/2004 |
| 6700953 | System, apparatus, method and article of manufacture for evaluating the quality of a transmission channel using voice recognition technology The present invention measures the quality of a transmission channel by utilizing voice recognition technology in a novel manner.... | 03/02/2004 |
