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Patent # Description
US-6,621,872 Systems and methods for improved medium access control messaging
Systems and methods for communicating medium access control (MAC) data without errors. Different encoding processes may be used to encode MAC data and data...
US-6,621,828 Fused switch core and method for a telecommunications node
A switch card for telecommunications node includes a shared memory operable to store traffic channels. A time slot interchanger (TSI) is coupled to a first bus...
US-6,621,812 Method and apparatus for mapping voice activity detection to a scheduled access media
Unsolicited grants are allocated a selected time interval for scheduling transmission of audio packets at a network endpoint. A network processing node switches...
US-6,621,810 Mobile IP intra-agent mobility
Methods and apparatus for enabling intra-agent mobility by a mobile node are disclosed, thereby permitting a mobile node to register with a Home Agent via a...
US-6,621,791 Traffic management and flow prioritization over multiple physical interfaces on a routed computer network
Per-flow fairness in routing devices operating with multiple physical-layer interfaces in which each active physical interface has an inherent transmission rate...
US-6,621,705 Miniature surface mount heatsink element and method of use
A printed circuit board (PCB) has at least a first surface. A patterned electrically and thermally conductive layer is disposed on the first surface. A surface...
US-6,621,626 Modular optical amplifier structure for highly dense interleaved WDM systems
An advantageous amplification architecture for DWDM systems including systems with very high capacity is provided. A modular interleaved structure for...
US-6,621,617 Displaced-bias interferometer-detection (DB/ID) modulation
A Mach-Zehnder interferometer is employed to implement phase modulation of an optical signal. The interferometer is biased at its maximum extinction point. The...
US-6,618,399 System and method for eliminating jitter by using a starve/inspect approach to AAL1
A system and method for transporting telephony signals across an ATM network using AAL1 while eliminating the jitter associated with the AAL1 cells. The present...
US-6,618,382 Auto early packet discard (EPD) mechanism for automatically enabling EPD on an asynchronous transfer mode (ATM)...
A method for automatic early packet discard mode enabling early packet discard on a cell switching network is disclosed. The method includes the steps of...
US-6,618,377 Flexible scheduling of network devices within redundant aggregate configurations
A protocol is provided for backing up ATM network devices should they fail. The protocol is implemented in a system running ATMARP and supporting IP over ATM. In...
US-6,618,374 Method for inverse multiplexing of ATM using sample prepends
A single ATM traffic stream is carried over a plurality of lower bandwidth media, such as T-1 or E-1 interfaces, using inverse multiplexing assisted by a...
US-6,618,373 Method and system for reliable in-order distribution of events
A system and method for maintaining reliable in-order event distribution using multicast are described. A trigger event is sensed and a multicast payload...
US-6,618,371 Butterfly network with switches set for two node disjoint paths and method for forming the paths
In a butterfly network, a number of switches are set to provide two paths that are independent of each other, from a first switch to a second switch, and from...
US-6,618,358 Method and apparatus for switching a clock source from among multiple T1/E1 lines with user defined priority
A clock selection controller is shown which allows a user to assign a priority scheme to recovered clock signals obtained from communication facilities. The...
US-6,615,362 System and method for fault recovery for two line bi-directional ring network
The present invention provides a protection protocol for fault recovery, such as a ring wrap, for a network, such as a two line bi-directional ring network. An...
US-6,615,257 Secure multi-user cable modem configuration editor and viewer
A configuration editor receives requests to access a configuration area for a cable modem. Each configuration area corresponds to a particular user type. The...
US-6,614,799 Method and apparatus for dynamic adjustment of cable modem back-off parameters in a cable modem network
A technique is provided for dynamically adjusting modem back-off parameters in a cable modem network. The technique is based on the theoretical result that the...
US-6,614,785 Automatic propagation of circuit information in a communications network
Disclosed is a method and associated apparatus for automatically propagating circuit information in a network. In one embodiment, a network includes multiple...
US-6,614,752 Transitioning a standards-based card into a high availability backplane environment
A telecommunications device includes a backplane having an associated high availability backplane environment. A transition card coupled to the backplane helps...
US-6,614,236 Cable link integrity detector
A method and apparatus for measuring the length of a cable link in a computer network sends a test signal through the cable and examines how the signal is...
US-6,611,624 System and method for frame accurate splicing of compressed bitstreams
A system for performing frame accurate bitstream splicing includes a first pre-buffer, a second pre-buffer, a seamless splicer, and a post-buffer. The system...
US-6,611,591 System and method for integrated telephony switching
A telephony system includes a switch coupled to a call agent and a legacy application, and further coupled to resources, some controlled by the call agent and...
US-6,611,551 OFDM channel identification
A system and method for characterizing a channel used by a digital communication system. In an OFDM system, the number of training symbols used to characterize a...
US-6,611,531 Method and apparatus for routing integrated data, voice, and video traffic
A Multiservice Access Concentrator (MAC) receives information comprising at least one data stream, at least one voice channel, at least one video stream, Local...
US-6,611,528 Hierarchical routing knowledge for multicast packet routing
The invention provides a method and system for multicast packet routing, in which only selected routers in a network subset (in a preferred embodiment, those...
US-6,611,524 Programmable data packet parser
A data packet parser, for determining packet format, is substantially software controlled, to readily accommodate new or different formats, without the need for...
US-6,611,496 Next hop selection in ATM networks
The invention provides a method and system for selecting one particular interface between a pair of adjacent nodes in an ATM network for assignment to a call in...
US-6,611,216 Fast look-up table based scheme for NRZI encoding/decoding and zero insertion/removal in serial bit streams
A look-up table scheme for performing non-return-to-zero inverted (NRZI) encoding on input data bytes. Also disclosed is a look-up table scheme for performing...
US-6,610,922 Apparatus for securing an electromagnetic shield in a conductive casing
An apparatus for securing an electromagnetic shield in a conductive, casing includes a conductive frame, spring devices on a first edge of the frame that secure...
US-6,609,225 Method and apparatus for generating and checking cyclic redundancy code (CRC) values using a multi-byte CRC...
Methods and apparatus are disclosed for generating and checking CRC values using a multi-byte CRC generator on a variable number of bytes. These methods and...
US-6,609,205 Network intrusion detection signature analysis using decision graphs
A method of detecting signatures representing misuse of a local network. Known reference signatures having one or more common events are identified, and...
US-6,609,154 Local authentication of a client at a network device
A method and apparatus that provide network access control are disclosed. In one embodiment, a network device is configured to intercept network traffic...
US-6,608,831 Breakout/break-in hybrid network system
A voice networking switching (VNS) appliance and methods for its use are disclosed. In a preferred embodiment, the VNS is an adjunct processor attached to a WAN...
US-6,606,681 Optimized content addressable memory (CAM)
A method and apparatus for realizing a content addressable memory. The content addressable memory including an associative memory portion including N entries,...
US-6,606,628 File system for nonvolatile memory
A file system for nonvolatile memory media is disclosed, based on the assumptions that the file system structure is flat (i.e., does not contain directories),...
US-6,606,316 Gathering network statistics in a distributed network service environment
A system and method are described for gathering statistics about packets. The method includes determining at a service manager statistics that are to be gathered...
US-6,606,315 Synchronizing service instructions among forwarding agents using a service manager
A method of obtaining instructions for routing a packet is described that includes receiving a packet having a packet flow identifier that includes a packet...
US-6,606,306 System and method for supporting a plurality of media conferences
A device for supporting a plurality of media conferences includes digital signal processors (DSPs) and a system resource management (SRM) module coupled to the...
US-6,606,298 Module firmware recovery
A method and apparatus of the present invention includes a network access server (NAS) for use in a communications system utilized by users of telephone, fax, or...
US-6,604,241 Communicating video information in a network using universal resource locators
A method and apparatus are provided for communicating network information among network devices using protocols based on Universal Resource Locators. In one...
US-6,604,195 Method and apparatus to use non-volatile read/write memory for bootstrap code and processes
A reset pin of a non-volatile read/write memory, which stores boot code, is provided with a reset signal in response to a system reset output by a watchdog timer...
US-6,603,774 Signaling and handling method for proxy transcoding of encoded voice packets in packet telephony applications
Voice packets are redirected in packet telephony applications to a codec proxy system that makes voice endpoints involved in an end-to-end call appear to be...
US-6,603,772 Multicast routing with multicast virtual output queues and shortest queue first allocation
The invention includes a method and apparatus for routing multicast traffic with better performance and reduced Head of Line blocking. This is achieved by means...
US-6,603,769 Method and system for improving traffic operation in an internet environment
A method and system for improving traffic operation in an internet environment by speeding up data packet transfers between a source host attached to a first...
US-6,603,765 Load sharing across flows
The invention provides a system and method for sharing packet traffic load among a plurality of possible paths. Each packet is associated with a flow, and a hash...
US-6,603,756 Hierarchical label switching across multiple OSPF areas
A router has a first interface to receive a packet from an external autonomous system and a second interface to transmit the packet as an outgoing packet to a...
US-6,603,586 System and method supporting optical communications
A system supporting optical communications includes a backplane comprising an optical communication medium. The system also includes a first optical driver...
US-6,601,995 Optical connector with flexible shielding cover
A unitary-construction shielding system obstructs an energy source opening within a connector housing when no connector is present within the housing. The shield...
US-6,601,106 Packet processing using non-sequential encapsulation and decapsulation chains
A method for processing packets in a router includes specifying operations on packets as chains of processing elements. Each chain is uniquely associated with...
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