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6442142 |
Base-band receiver energy detection system
A method for determining whether signal data exists on a communication line, including: receiving a signal from the line; measuring a level of the received signal at a plurality of predetermined...
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6434118 |
Method for determining round trip time utilizing ATM traffic management mechanism
A method of measuring the Round Trip Time (RTT) if a Virtual Circuit (VC) utilizing the Traffic Management mechanism of ATM. The RTT is measured in real time individually for each new opened VC...
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6430158 |
Wireless communication method, wireless communication apparatus and wireless communication control apparatus
A method and apparatus for ensuring wireless transmission among respective communicating apparatuses when constructing a local area network with a plurality of wireless communicating apparatuses....
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6424629 |
Expediting reconvergence in a routing device
A technique for updating a routing table in a routing device operating over a logical connection in a communication network utilizes a mechanism at a first protocol layer to determine a logical...
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6424628 |
Analyzing signals
The invention provides a method of identifying framing bits in order to correctly frame a test signal comprising a data payload in the form of a pseudo random binary sequence (PRBS), split into...
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6424627 |
Full-duplex medium tap apparatus and system
A bi-directional network medium monitor including a tap apparatus connected inserted in a network media, e.g. Fiber Optic (FX) and Twisted Pair (TX), comprising a transceiver and a clock recovery...
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6411623 |
System and method of automated testing of a compressed digital broadcast video network
A switched, digital high-broadband network provides automated control and in-service and out-of-testing of analog video signals, encoded and decoded real time, into MPEG 2 digitized format with a...
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6404740 |
System for testing internal connectivity in ATM switching equipment
A test system which can verify the internal connectivity in an ATM switching system by using loopback OAM cells, without establishing any dedicated channels or using special cells newly defined for...
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6404733 |
Method of exercising a distributed restoration process in an operational telecommunications network
In a telecommunications network provisioned with a distributed restoration scheme, to determine the reactions and responses of the network while the network is “live” or operational, an...
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6400716 |
Asynchronous transmission mode switch and control method of the asynchronous transmission mode switch
An ATM switch comprises a detector that detects impairments in signal lines, and a controller that controls the preservation of paths that have been established by call control via a signal line...
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6400691 |
ATM switching equipment and data editing system
An ATM switching equipment involves the use of a data editing terminal different from a central controller to easily efficiently collect data on a transmission path. Each component device generates...
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6400694 |
Duplex communication path switching system
A duplex communication path switching system provided at each of nodes connected by a communication path which is formed of clockwise and counterclockwise transmission lines in a ring network. The...
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6393379 |
Controller area network diagnostic instrument
A controller area network diagnosis instrument for diagnosis and evaluation of electronic components on a vehicle control system 10. The controlled area network diagnostic instrument (CANDI)...
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6385237 |
Non-invasive digital cable test system
Method and apparatus for non-invasive testing of digital communications systems. Amplitude measurements are made for multiple frequencies of a multi-frequency communication system, converted to the...
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6381217 |
Delivering method in ATM point-to-multipoint connection
A method for checking an ATM point- to-multipoint connection between a paging sender and a plurality of paging receivers in a mobile communications system is disclosed. The paging sender transmits...
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6380971 |
VDSL video/data set top test equipment
A VDSL customer drop testing arrangement and equipment utilizes a test set top box having a sign-on identifier unique to an authorized test device to perform testing of the customer drop without...
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6377552 |
System, device, and method for evaluating dynamic range in a communication system
A system, device, and method for evaluating dynamic range in a communication system utilizes a narrow band multiple tone test signal for emulating a wide band composite signal equivalent to the...
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6373822 |
Data network protocol conformance test system
A modular data network protocol conformance test system is designed to make distinct the key functionality that is required in protocol conformance testing such that the system can be reused across...
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6370230 |
Method and system for diagnosing and testing modems and intermachine trunks
A method and system for testing trunks and modems of communication lines includes identifying a trunk and a modem in a communication line from trunk signaling (SS7) data. Historic performance data...
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6356531 |
Monitoring of CDMA load and frequency reuse based on reverse link signal-to-noise ratio
A system and method for monitoring the load on a CDMA communication system having a base station and a plurality of users. A measure of voice activity in the communication system is determined, and...
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6351455 |
System test metacontroller
A system test metacontroller including an input device and a processor. The input device accepts a metascript containing commands to control devices which are part of a test arrangement. At least...
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6345042 |
Method for checking a data exchange based on a communication protocol
The present invention relates to a method for checking a data exchange between participants in a call established on a communication medium in compliance with a protocol. In order to identify the...
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6343064 |
Method and system for remote management of equipment having duplicate network addresses
A communications system for remotely managing equipment includes a first remote device and a second remote device having the same network address. A communications network includes a first link...
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6335918 |
Device for estimating data cell loss rate in a digital communication network switching unit
The device comprises a traffic summator ( 4 ) for summing the number of cells which are present on each incoming highway of the switch during each cell instant and are destined for one and the same...
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6327467 |
Method for computing maximum traffic capacitance of a base station using a virtual call
A method for computing maximum traffic capacitance of a base station using a virtual call in the digital mobile communication system in such a way that an operator at operating terminal for Base...
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6327250 |
Method and apparatus for supressing crosstalk between data and monitoring channel in an optical communication system
A method and apparatus is provided for monitoring an optical transmission path through an optical transmission system supporting bidirectional communication between first and second terminals along...
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6324492 |
Server stress testing using multiple concurrent client simulation
Method and system for simulating multiple concurrent clients on a network server to stress test the server. Each of one or more processors has one executable software thread, the send data thread,...
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6321349 |
Method and apparatus for developing and debugging portable computers via a peripheral interface slot
A portable computer includes a housing having an outside surface. A processor is contained within the housing and has a bus port and a debug port. A debug connector is mounted at the outside...
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6321148 |
Vehicle communication control apparatus and method
A communication control apparatus and method for controlling communication between a plurality of electronic control units (ECUs) provided in a vehicle and a diagnostic apparatus. Each of the ECUs...
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6314464 |
Communication control method
Route control and resource reservation mechanisms are integrated so as to perform multicast communication efficiently. In response to a connection establishment request from a new receiver (host F)...
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6314086 |
Interactive contextual-based assistance for portable ISDN test set
An integrated services digital network (ISDN) test set includes an ISDN transceiver, a supervisory control processor which is operative to cause the ISDN transceiver to controllably transmit and...
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6310911 |
Method of detecting signal degradation fault conditions within SONET and SDH signals
In a method of detecting signal degradation conditions in synchronous digital signals, the error monitors first detect the presence and/or absence of a particular bit error ratio by integrating...
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6304988 |
Scan testable circuit arrangement
A circuit arrangement utilizes a common bus for functional operations of logic circuits and for scan testing the logic circuits. In one embodiment, input/output ports and scan test ports of the...
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6301227 |
Systems and methods for allowing transmission systems to effectively respond to automated test procedures
The invention provides a cost-effective system and method for testing telephone lines connected to transmission systems, such as Subscriber Line Multiplexer systems. The invention uses the same...
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6292468 |
Method for qualifying a loop for DSL service
A method for qualifying a local loop for digital subscriber line service utilizes a test device connected to the customer end of the loop to measure test signals originating from the provider end...
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6292467 |
Apparatus and method of determining a link status between network stations connected to a telephone line medium
A local area network having a telephone line medium in a home network environment includes physical layer transceivers having transmit and receive state machines enabling each network station to...
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6272450 |
Cellular network traffic simulator (cents)
A traffic simulator for a cellular radio telecommunications network. The traffic simulator includes a function handler which generates a plurality of basic call functions performed by mobile...
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6272139 |
Signaling protocol for rerouting ATM connections in PNNI environments
A method in a connection based communication network for rerouting a call connection path coupling a calling and a called party. Rerouting is done within a peer group and may be performed in any...
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6269081 |
Communications system for receiving and transmitting data cells
A communication system is provided for transmitting and receiving data cells containing control messaging and customer data, including a real-time development system (RDS) and means for generating...
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6259674 |
Device and method for automatic initialization of a multi-mode interface controller
A method of automatically selecting a mode of operation during an initialization sequence of a multi-mode signal controller includes selectively enabling and disabling signal reception and signal...
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6240090 |
Self-configuring processors in an asynchronous transfer mode switch
A self-configuring node includes a number of data processors associated with corresponding ports of an asynchronous transfer mode (ATM) switch. When the node is placed into service, each of the...
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6240450 |
Network data visualization system and method for downloading visualization software to a user station after user authentication
A network data visualization system and method are disclosed. In a specific embodiment, a user accesses a web page using a browser. Before returning the web page, the server authenticates the user...
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6233613 |
High impedance probe for monitoring fast ethernet LAN links
A high impedance tap for monitoring traffic over a communication link of a fast Ethernet local area network (LAN). The circuit of the present invention is advantageously used for tapping into a...
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6229807 |
Process of monitoring the activity status of terminals in a digital communication system
In a digital communication system comprising a primary station and a plurality of secondary stations remote from the primary station and in which the primary station exchanges data with the...
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6226261 |
Redundant switching arrangement
The invention relates to a redundant switching arrangement using a first and second switching network (SWF_A, SWF_B) or other switching element. The switching elements are used to carry out...
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6222854 |
Link monitor state machine
A network node is connectable to a network. The node includes a physical media access sublayer. The physical media access sublayer includes a link monitor state machine. The link monitor state...
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6219340 |
Display of code power in all symbol rates in a single screen for code-division multiple access signals employing layered orthogonal codes
Power levels for a code-division multiple access (CDMA) signal with layered orthogonal codes are displayed. When displaying power levels for multiple code layers, a power level for each active code...
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6212170 |
Method for managing status and dual information of clock distributor
A control device manages status and dual information of respective boards in a clock distributor for use in a CDMA base station controller. The device forms a TD-bus communication path and an...
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6208621 |
Apparatus and method for testing the ability of a pair of serial data transceivers to transmit serial data at one frequency and to receive serial data at another frequency
An apparatus and method are presented for testing the ability of a pair of serial data transceivers to transmit serial data at one frequency and to receive serial data at another frequency. A...
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6198726 |
Plural-line terminating apparatus and OAM processing method thereof
In a method of executing OAM processing in a plural-line terminating apparatus, a physical layer terminator converts a line signal to cells and adds a line identifier onto each cell header, the...
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