U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 370/249 - Loopback


Subclass of Class 370 - Multiplex communications
Definition: Subject matter wherein an equipment is tested by connecting
No. of patents: 627
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8184545Technique for combating loops in communication network
Technology for combating loops in multi-domain networks, by assigning to network domains categories, at least such as “high/trusted” and “low/less trusted”, and by making a decision about relearning Forwarding Information Base FIB of any edge node interconne...
05/22/2012
8184544Method of transmitting feedback data in a multiple antenna system
A method of transmitting feedback data in a multiple antenna system comprises receiving a request message of feedback data on a downlink channel, the request message comprising uplink scheduling information, selecting a set of M (M≧1) subbands within a plurality o...
05/22/2012
8169924Optimal bridging over MPLS/IP through alignment of multicast and unicast paths
A provider edge (PE) node of a network operates to send a trace path message over the network to a receiver PE node, the trace path message recording a list of intermediate nodes of a unicast path from the PE node to the receiver PE node; and receive a join message ...
05/01/2012
8159958Krone block dongle
The present invention relates generally to Krone block dongle. More particularly, the invention encompasses a method and an apparatus to monitor any media DSLAM port remotely off of a Krone block assignment. ...
04/17/2012
8149723Systems and methods for discovering machines
A method for discovering computers connected to a computer network, including receiving a packet containing address information of a computer connected to the computer network that sent the packet, extracting the address information from the packet, and adding the a...
04/03/2012
8144606Interfacing messages between a host and a network
Devices, systems, methods, and other embodiments associated with a network device for interfacing a host with a network are described. One example network device includes a transmit path, and a receive path. A loopback path connects the transmit path and the receive...
03/27/2012
8130660System and method of remote testing in loopback mode using MGCP/NCS
This invention relates to a system and method of monitoring, by establishing end to end loopback testing across one or more networks with dissimilar transport technologies. The system allows for connection in loopback mode from a standard interface on a test device ...
03/06/2012
8125915Remote management of a bridge device
A method and system for remotely managing a bridge device, such as a modem, are disclosed. Management traffic from a service provider can be communicated to a bridge device which lacks a public IP address by sending the management traffic through the bridge device t...
02/28/2012
8085676Method and system for looping back traffic in QIQ ethernet rings and 1:1 protected PBT trunks
A resilient virtual Ethernet ring has nodes interconnected by working and protection paths. If a span fails, the two nodes immediately on either side of the failure are cross-connected to fold the ring. Working-path traffic is cross-connected onto the protection pat...
12/27/2011
8085675Method and apparatus to test a data path in a network
A method and apparatus for testing a data path in a network is described. The method may comprise creating a closed loop in the data path so that test data (e.g., fixed set of known data) sent from a local network device to a downstream network device is returned by...
12/27/2011
8068435Rate adaptive modem
A communication system transmitting signals over a network using a transmission waveform in which a plurality of data packets are transmitted in a payload field of a transmission frame, the system includes a transmitter, which has a transmitting portion that sends i...
11/29/2011
8040814Relay apparatus, conduction confirmation method thereof and conduction confirmation circuit
The relay apparatus relays frames in which a plurality of network identifiers are set and comprises a frame determining unit, a converting unit, and a sending unit. The frame determining unit determines whether a frame received at a communication port is a specific ...
10/18/2011
8009571Method and system for PHY loop detection
A method, system and apparatus are provided for detecting a loop-back in a physical layer on an Ethernet link. In the physical layer, a device sends a base page on the Ethernet link. The base page has at least one next page capability bit set. Subsequently, the devi...
08/30/2011
7983177Communication node, and ring configuration method and ring establishment method in communication system
A plurality of communication nodes are one-to-one connected to each other by Ethernet (registered trademark) which is duplicated with a normal-system ring and with a standby-system ring. The communication node includes an A port, a B port, and a communication proces...
07/19/2011
7957303Communication quality evaluation method, derivation device, communication quality evaluation system and computer program
When simulating communication using a communication network such as a VoIP network, an actual communication state is accurately simulated, and communication is simulated. The distribution of delay times of packets is transformed by a predetermined transformation met...
06/07/2011
7957304System for and method of using a loopback mechanism to perform network testing
A system for and method of actively running performance tests is presented. The system and method allow a device connected, via a VPN or IPSec tunnel, to a VoIP or other service provider network, to run network performance tests using the IP address assigned by a VP...
06/07/2011
7953017Application specific service ping packet
Various exemplary embodiments relate to a method and related network node including one or more of the following: creating the application specific service ping packing including a special packet identification field that identifies the application specific service ...
05/31/2011
7940683In-bound mechanism that verifies end-to-end service configuration with application awareness
A method of using deep packet inspection (DPI) to verify a service configuration. The method may include one or more of the following: building an application specific service ping packet having an application identification field that identifies an application to w...
05/10/2011
7936684Physical layer loopback
In some embodiments, a chip comprises control circuitry to provide inband signals, inband output ports, and transmitters to transmit the inband signals to the inband output ports. The control circuitry selectively includes loopback initiating commands in the inband ...
05/03/2011
7929451Switch and packet forwarding method
A switch that performs packet forwarding processing based on a label for a connection in which a communication path is specified by the label, includes a receiving unit that receives loopback information with a label of a first layer used for packet forwarding for a...
04/19/2011
7929450In-bound mechanism that monitors end-to-end QOE of services with application awareness
A method of using deep packet inspection (DPI) to monitor Quality of Experience (QoE) The method may include one or more of the following: building an application specific service ping packet having an application identification field that identifies an application ...
04/19/2011
7885196Loop communication system and communication device
A loop communication system includes a plurality of communication devices, each of which holds an identification data assigned to the communication device, and has a single port used for transmission and reception of a data packet for a transmission data, and which ...
02/08/2011
7864691Apparatus and method for performing a loopback test in a communication system
The invention is test apparatus and methods for performing loopback tests. The tests involve generating a packet-based test message having a source address and a destination address. When the test message arrives at the destination, the addresses are exchanged and t...
01/04/2011
7855971Interface device and topology formation method
When a loop connection associated with a port is detected while the port is in an Untested state ST3, a state machine corresponding to the port shifts from the state ST3 to a Loop_disabled state ST4. The state machine then shifts from state ST
12/21/2010
7852779Communication node, and ring configuration method and ring establishment method in communication system
A plurality of communication nodes are one-to-one connected to each other by Ethernet (registered trademark) which is duplicated with a normal-system ring and with a standby-system ring. The communication node includes an A port, a B port, and a communication proces...
12/14/2010
7830809Methods and apparatus for characterizing a route in a fibre channel fabric
A fibre channel frame is received at a first fibre channel switch. The fibre channel frame includes time stamp information associated with fibre channel switches between a second fibre channel switch and the first fibre channel switch. A time-to-live (TTL) value inc...
11/09/2010
7826383Home phoneline network alliance responder for IPTV installations
A device for testing a home phoneline network alliance performance of a local network is disclosed. The device includes a first network interface, a second network interface, a test module, and a processor. The first network interface is adapted to connect with the ...
11/02/2010
7821952Loop locating apparatus and loop locating method in layer 3 network
A loop locating apparatus and method enabling simple and fast identification of a Layer 3 loop fault occurring in a network, wherein, when the possibility of a Layer 3 loop is detected, a loop locating command function unit makes a packet transmission/...
10/26/2010
7801052Apparatus for measuring transmission delay
A transmission delay measuring circuit may include a first transmission path, a second transmission path, an inversion circuit, a first multiplexer, and an output terminal. The second transmission path may have the same structure as the structure of the first transm...
09/21/2010
7792047Asymmetric packet switch and a method of use
The present invention relates to a packet switch and a packet switching method. An example embodiment of the present invention comprises at least three network ports, at least one instrument port, a mux-switch, a packet switch fabric, and an address table. The embod...
09/07/2010
7787388Method of and a system for autonomously identifying which node in a two-node system has failed
A method of and a system for autonomously identifying which node in a two-node system has failed are described. The system includes two nodes and a fault-tolerant communication fabric. The fabric defines a plurality of communication paths connecting the two nodes, a...
08/31/2010
7764621Packet loopback methods and replacing a destination address with a source address
Packet switch operating methods and packet switches receive a packet on a first port of the packet switch. The packet is addressed to a device that is in communication with a second port of forwarding circuitry of the packet switch and the packet has an Ethernet des...
07/27/2010
7746796Directed echo requests and reverse traceroute
In one embodiment, a first node may send an out-of-band message to a second node to request that the second node initiate an in-band echo request for a specified tunnel, e.g., toward one or more third nodes. Upon receiving the in-band echo request, one or more respo...
06/29/2010
7746795Method, system, and apparatus for loopback parameter exchange
A loopback test to test a communication link for a layered interface where in a master agent programs the electrical parameters for the slave agent, such as, the offset, timing, and current compensation with a loopback control register. The slave agent's transmitter...
06/29/2010
7742427Internal loop-back architecture for parallel serializer/deserializer (SERDES)
An internal loop-back architecture for a parallel serializer/deserializer (SERDES) includes a transmitter macro including a plurality of transmit elements arranged in a parallel architecture, and a receiver macro including a plurality of receive elements arranged in...
06/22/2010
7710888Apparatus and method for testing and fault isolation in a communication network
An apparatus and method for performing automated testing and trouble isolation of a communications link in an access network is described. Communications link testing may occur without taking the communications link out of service for the duration of the test. ...
05/04/2010
7706293Performance management system, apparatus and method between residential gateway and broadband remote access server
The present invention discloses a performance management system, apparatus and method between a Residential Gateway (RG) and a Broadband Remote Access Server (BRAS), the method thereof includes: configuring an OAM IWF for the protocol conversion between the performa...
04/27/2010
7701862Method and system for PHY loop detection
A method, system and apparatus are provided for detecting a loop-back in a physical layer on an Ethernet link. In the physical layer, a device sends a base page on the Ethernet link. The base page has at least one next page capability bit set. Subsequently, the devi...
04/20/2010
7697446Link testing in an ethernet DSL network
A system and method in a communications network of testing a communications link between Customer Premises Equipment (CPE) and a Broadband Remote Access Server (BBRAS). The CPE and BBRAS communicate mutually via an intermediate Internet Protocol Digital Subscriber L...
04/13/2010
7693083Audio network system
An audio network system allows any two nodes among a plurality of nodes to transmit and receive audio data to and from each other. The plurality of the nodes are connected in loop so as to allow transmission of the audio data in loop manner through the plurality of ...
04/06/2010
1                      
 
Sign InRegister
Username  
Password   
forgot password?