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Dispatching packets from a forwarding agent using tag switching
A system and method are disclosed for providing a network service. The method includes storing at a forwarding agent a tag table. The tag table includes a list...
Apparatus and methods providing redundant routing in a switched network
The invention provides unique architectures and techniques for routing redundancy in a data switch configured to use label switching. Multiple label switch...
Telephone-based hypertext transport protocol server
A telephone is provided for delivering content to a client that is coupled to a communications network. The telephone includes a processor and a network...
Value-added features for the spanning tree protocol
A method and apparatus facilitates and enhances the operation of the spanning tree protocol in bridged computer networks. An intermediate network device in...
Methods and apparatus for managing a flow of packets using change and reply
Techniques are provided for controlling a flow of packets in a data communications device. A first technique involves transferring packets of a particular packet...
Method and apparatus of handling data that is sent to non-existent
A method of managing a network switch. The method having the first step of detecting a status of a set of physical ports on an interface card in the network...
Method and apparatus providing a graphical user interface for representing
and navigating hierarchical networks
A method and apparatus are provided which present hierarchical data to a user via a graphical user interface. A preferred embodiment represents hierarchical data...
System and method for retrieving software release information
A method for retrieving software release information. A first step obtains a software defect data set, a second step obtains a software release data set, and a...
System and method for processing circuit card connector and redundancy
A system for processing circuit card events includes a circuit board having a first connector and a second connector. The circuit board generates connector...
Automatic static to dynamic IP address and DNS address management for
remote communications network access
A system and method for remotely connecting client computers to a communication network such as the Internet by way of a server system and dynamically providing...
Failover mechanisms for remote networked phones
A method of providing failover service to network phones. A failure of communication between a network phone and a primary call manager is identified....
Method and apparatus for DS3 pentad-based processing
A system and method for pentad-based processing are disclosed for efficient processing of DS3 data by converting a DS3 frame to pentad and shuffling the overhead...
Minimum bandwidth guarantee for cross-point buffer switch
A method and system for use in data communications. The method and system substantially ensure that actual data transmission per unit time from at least one...
Methods and apparatus for transferring data using a filter index
A server installation, which includes multiple servers, services a client request using a filter index that is different than a destination address associated...
Voice-mail application on the router with no secondary storage available
In accordance with a method and apparatus of the present invention, a voice communication system is disclosed for use in a packet switching network environment...
Dynamically delisting and relisting multicast destinations in a network
An apparatus and method for reducing congestion in a network switching node. A congestion mask that indicates which of a plurality of destination ports in a...
Block coding system and method of data aggregation
A method of coding data for communication within a network. The method includes receiving an 8b/10b source protocol data stream containing 10-bit code and...
Uninterruptable power supply
An uninterruptable power supply for use with an Internet Telephone or Internet Telephone Cable Modem comprises a power supply and a load. The power supply has an...
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...
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...
Method and apparatus for mapping voice activity detection to a scheduled
Unsolicited grants are allocated a selected time interval for scheduling transmission of audio packets at a network endpoint. A network processing node switches...
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...
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...
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...
Modular optical amplifier structure for highly dense interleaved WDM
An advantageous amplification architecture for DWDM systems including systems with very high capacity is provided. A modular interleaved structure for...
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...
System and method for eliminating jitter by using a starve/inspect approach
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...
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...
Flexible scheduling of network devices within redundant aggregate
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...
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...
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...
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...
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...
System and method for fault recovery for two line bi-directional ring
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...
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...
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...
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...
Transitioning a standards-based card into a high availability backplane
A telecommunications device includes a backplane having an associated high availability backplane environment. A transition card coupled to the backplane helps...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...