|
Match
|
Document |
Document Title |
|
|
6694373 |
Method and apparatus for hitless switchover of a voice connection in a voice processing module
A method and apparatus is described that provides for switching active data connections from one processor to another processor without significantly interfering with the transmission of the data....
|
|
|
6693875 |
Communication network system
A communication network system has a plurality of communication terminals, each having a first transmitting unit and a first receiving unit. Information is transmitted and received among the...
|
|
|
6693874 |
System and method for enabling fault tolerant H.323 systems
An H.323 client terminal ( 102 ) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines ( 110 a , 110 b ). The primary control unit ( 110 a...
|
|
|
6687217 |
Method of and system for one plus one protection for radio equipment
A method of and apparatus incorporating 1+1 protection in a point-to-point radio system includes redundant microwave radio transceiver pairs, each transceiver including identical controls for...
|
|
|
6687356 |
System and method for providing device-aware services in an integrated telecommunications network
A system and method of device-aware service provisioning in a hybrid/integrated telecommunications network having a packet-switched network portion (PSN) and heterogeneous circuit-switched network...
|
|
|
6687218 |
Configurable communication output redundancy
The invention is a communication system having a series of output modules that provide continuous synchronization output signals. Each output module has a driver assembly that has a driver output...
|
|
|
6680904 |
Bi-directional chaining of network access ports
Network access apparatus includes first and second master units, each having a physical interface to a packet-switched network. A plurality of slave units, each slave unit having one or more ports...
|
|
|
6680903 |
Network system, network terminal, and method for specifying location of failure in network system
In a network of a topology of a loop and a bus, occurrence of a failure is detected and a location of the failure is specified. Occurrence of the failure is detected by detecting that a specific...
|
|
|
6674714 |
Retainment of alarm events during wait restore (WTR) cycle of channel restoration and squelch table with reduced memory area
A transmission device which cross connects channels on a synchronous multiplex transmission network which forms a ring, and which performs restoration of communication by looping back signals in a...
|
|
|
6674713 |
Method and apparatus for providing continuous voice and call communications between a data network and a telephony network
A method and apparatus are provided for providing continuous voice and call communications between a data network and a telephony network. In one configuration, a first gateway controller that...
|
|
|
6671253 |
Method and system for providing peer redundancy to asynchronous transfer mode emulated local-area networks
A method and system for providing enhanced peer redundancy in an ATM emulated local area network (ELAN) served by a primary LAN emulation server (LES), a peer LAN emulation server, a broadcast and...
|
|
|
6662368 |
Variable spare circuit group size and quantity having multiple active circuits
A plurality of daisy-chained switching circuit cards are each coupled to a different active circuit card. Feed-through circuit cards are each coupled to spare circuit cards having substantially...
|
|
|
6646982 |
Redundant source synchronous busses
A system and method for providing redundant source synchronous communication links. The system includes a redundant source synchronous communications bus coupling a first component and a second...
|
|
|
6643254 |
Rerouting method for a PVC route on an ATM network and a network management system using the rerouting method
The present invention relates to a method of rerouting a PVC route on an ATM network by previously defining an alternate route for the PVC route and by switching the PVC route to a previously...
|
|
|
6643253 |
Method and apparatus for providing virtual facility communication service
A system for establishing a virtual facility connection so that services provided by a main location private branch exchange are accessible by affiliated or remote locations via a concentrator,...
|
|
|
6639893 |
Communication network system including ring network that performs communication through multiple switching devices
Two between-ring connection node devices are placed between ring networks A and B, these are connected by between-ring transmission lines for which it is possible for each of the items that face...
|
|
|
6639894 |
Communications interconnect with make-before-break signal routing
A primary communications interface card for receiving a signal is equipped with a bypass or shunting relay, the control of which is managed by a backup or protection interface card. The cable...
|
|
|
6625115 |
Self-healing network, method for transmission line switching thereof, and transmission equipment thereof
The present invention provides a network in which the installation of working lines may be enabled based on the required traffic and the high speed switching of the transmission lines may be...
|
|
|
6625753 |
Recovery facility for an SNA communication network
A recovery facility is provided for a system network architecture (SNA) communication system employed by a computer network. The recovery facility includes bringing up a backup processor upon...
|
|
|
6614752 |
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 transition a standards-based card...
|
|
|
6594261 |
Adaptive fault-tolerant switching network with random initial routing and random routing around faults
An interconnection network routes packets among switches connected in a multi-dimensional network of links. Each packet contains a header with an address of a source switch connected to an input...
|
|
|
6594358 |
Method and apparatus for replacing terminator in the backplane of a telecommunication switch
This invention provides a method for replacing terminators in a backplane of a telecommunication switch such that the telecommunication traffic carried on a line does not require a separate routing...
|
|
|
6594228 |
Backup procedure for signalling links
A method of improving the signalling performance reliability of an interface between a signalling agent and a network element. In the case of a non-redundant signalling agent, a primary link is...
|
|
|
6590862 |
Line interfacing apparatus with N&plus 1 configuration
A line interfacing apparatus has terminating units connected to lines, a spare terminating unit, a line selector for connecting one of the lines to the spare terminating unit, and a termination...
|
|
|
6574686 |
Method for overcoming faults in an ATM I/O module and lines connected thereto
An arrangement having a service fiber and a protection fiber connected to different I/O modules that are connected to an ATM switch. The switching functions necessary for achieving protection are...
|
|
|
6570844 |
System and method for providing redundancy in a telecommunications system
A redundancy system for a telecommunications system is provided. The redundancy system includes one or more resources, such as circuit cards containing circuits that process data for...
|
|
|
6556539 |
Selector switch control using priority table
A system and method for reducing undesirable phase transients caused by revertive switchover in a telecommunications network. Selector switch settings are assigned priorities. The priorities...
|
|
|
6552997 |
Router network, with saving function, for subordinate LAN at router fault
Disclosed is a router network which, regardless of the format used for a network, ensures that communication with another segment will be maintained, even though a fault may occur at a router. The...
|
|
|
6553034 |
Virtual path ring protection method and apparatus
A method and apparatus for the robust implementation and protection of Asynchronous Transfer Mode (ATM) traffic over a Synchronous Optical Network (SONET) Unidirectional Path Switched Ring (UPSR)....
|
|
|
6546498 |
System and process for detecting/eliminating faulty port in fiber channel-arbitrated loop
A system and method of detecting/eliminating a faulty port in a fiber channel-arbitrated loop, which implements early location/elimination of a port which causes a faulty on a loop in an FC-AL. If...
|
|
|
6542268 |
OPTICAL CHANNEL CROSS CONNECT FOR TELECOMMUNICATION SYSTEMS IN WDM TECHNOLOGY (WAVELENGTH DIVISION MULTIPLEXING) HAVING A DOUBLE SPATIAL SWITCHING STRUCTURE OF OPTICAL FLOWS STRICTLY NOT BLOCKING AND INTERPOSED FUNCTIONAL UNITS OPERATING ON SINGLE CHANNELS
An optical cross-connect for the switching of optical channels at variable bit-rate (up to 10 Gbit/s), wavelength division multiplexed on bi-directional optical fibers forming the transmission...
|
|
|
6542461 |
Method of protecting ATM connections in a telecommunications network
A method of protecting ATM connections in a telecommunications network including at least one protection domain which covers only a portion of a connection, each protection domain comprising a...
|
|
|
6535479 |
Hitless switching system of ATM switch apparatus in which discard priority control is stopped
A hitless switching system in an asynchronous transfer mode (ATM) apparatus, includes a first system switch section and a second system switch section. The first system switch section has a first...
|
|
|
6532231 |
Arrangement for changing the destination of single link, single destination data messages
An arrangement and method for switching a single destination data channel to a different destination without losing any data messages. Such a switch is required, for example, when a switch is made...
|
|
|
6529473 |
Device for ATM cell switching, with failure tolerance
A device for ATM cell switching having failure tolerance. The device is divided into two types of equipment modules. The first type includes connecting modules while the second type includes two...
|
|
|
6504817 |
Fiber channel arbitrated loop dynamic loop sizing
In a Fiber Channel Arbitrated Loop communications architecture, dynamic loop sizing includes selectively bypassing operational device ports in the loop in order to minimize overhead associated with...
|
|
|
6498779 |
Multiple endpoint paths
A multiple endpoint path for providing endpoint redundancy is described. Selected active end nodes in a digital communications network are configured by a network management system to have...
|
|
|
6493346 |
System for providing conversion of TDM-based frame relay data in a cross-connect matrix to and from ATM data
A high density frame relay circuit within a digital cross-connect matrix converts TDM based DCS matrix data containing frame relay data to/from a DS3 ATM physical interface and provides adaption...
|
|
|
6487214 |
Method and apparatus for implementing an ethernet protocol using three wires
A system and method are disclosed for transmitting signals from a digital MAC interface to a bus and for transmitting signals from a bus to a digital MAC interface. A first bus data line is...
|
|
|
6469981 |
Point-to-multipoint network
The invention has for its object to provide a network in which an optimized mode of operation is made possible both in the trouble-free case and on the occurrence of a disturbance. This object is...
|
|
|
6466576 |
ATM switching unit
In an ATM switching unit, action information indicative of a cell of a presently operable system is stored into such a cell received from a line which is used as the line for the presently operable...
|
|
|
6452926 |
Reliable and robust atm-switch
An ATM-switch is built in tree stages, each consisting of a plurality of switch cores. Each switch core in the first stage is duplicated to form a redundant pair of planes operating independently...
|
|
|
6449249 |
Spare circuit switching
Active and spare circuit cards are each paired with switch cards. Each switch on the switch cards is daisy chained with prior and succeeding switches. A master controller senses a faulty circuit...
|
|
|
6426940 |
Large scaled fault tolerant ATM switch and a self-routing method in a 2N×N multiplexing switch
A large-scale fault tolerant asynchronous transfer mode (ATM) switch and a self-routing method in a 2n×n multiplexing switch. The 2n×n multiplexing switch includes 2n valid (VD) extracting parts...
|
|
|
6418116 |
Transmission system having an uninterrupted switchover function for a plurality of lines
A transmission system having an uninterrupted switchover function for a plurality of lines is disclosed. The aims are to prevent unnecessary switchover and to provide high quality transmission...
|
|
|
6418115 |
Exchange for changing a route of a transmission path to bypass a malfunctioning switch
An exchange changes a route of a transmission path to bypass a malfunctioning switch. The transmission path is formed in a switch network including a plurality of switches for transmitting...
|
|
|
6414969 |
Cellular telephone communication protocol
A cellular telephone communication protocol enables a communication link primarily for the transmission of voice and data. At predetermined intervals or on-demand data regarding location, an event,...
|
|
|
6411598 |
Signal conversion for fault isolation
To readily isolate a fault in a network adaptable for distributed restoration of disrupted traffic, each node of the network is provisioned with the functionality of being able to detect an...
|
|
|
6392989 |
High speed protection switching in label switched networks through pre-computation of alternate routes
Method of providing a recovery plan for a connection in a communications network when the connection is disrupted by a failure of a switch, switch or link in the network. In a provisioning phase, a...
|
|
|
6381221 |
System and method for monitoring line performance in a digital communication network
System for monitoring the performance of at least one line at a node of a digital communication network, such a system including a set of hardware registers associated with the line for registering...
|