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7218242 |
Communication system and method including communication channel mobility
A system and method for a communication apparatus to provide advanced features such as communication channel mobility, billing options for communication charges (for instance reverse billing), and...
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7079484 |
Management method for maintaining communications options within a private communications network
The method enables a set of services to be maintained within a private communications network even in the event of the network becoming split. It uses emergency means providing dynamic accesses...
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6983330 |
Method and apparatus for using multiple paths for processing out of band commands
One aspect is directed to a method and apparatus for transferring information, through a shared storage system, between first and second processes running on first and second computers,...
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6977890 |
Decision-making route control system and decision-making route controlling method
In a decision-making route control system, an IP network is constructed by using the routing protocol, and general protocols of SNMP and ICMP. Thus, the route can be switched at the time of route...
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6947377 |
Path network and path network operation method using conversion of protection path into working path
A path network and a path network operation method capable of dealing with an abrupt traffic variation by realizing fast path bandwidth increase are disclosed. A path network is operated by...
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6895441 |
Path rerouting mechanism utilizing multiple link bandwidth allocations
A path reroute mechanism for use in communication networks comprising multiple searches for a routing path to restore traffic following a failure that could not be protected by a previously...
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6894971 |
Redundant structure control device for exchange
A redundant structure control device for an (N+1) reluctant structure exchange, capable dealing with line trouble and line interface device trouble. When line trouble is detected frame tag...
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6839515 |
Method for establishing a communication on a standby link in optical transmission facilities
A method for standby switching in optical transmission devices is provided, wherein, in addition to a working signal and a protection signal, respective control signals with information concerning...
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6775228 |
ATM network element and method for automatic protection switching of a transmission convergencence sublayer subnetwork connection
The invention relates to a method and an ATM Network Element (ATM NE- 1 ) for automatic protection switching of a Transmission Convergence Sublayer SubNetwork Connection TCS SNC. In order to...
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6724880 |
Method and apparatus for sparing communications circuits
Splitting circuitry receives external telecommunications lines and splits them into corresponding primary and secondary lines for implementing an N:l sparing arrangement in an associated...
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6611409 |
Line module protection method and device utilizing said method
The present invention relates to a line module protection method and a device utilizing that method. According to the line module protection method of the present invention, line module protection...
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6577728 |
Method of providing continual network access for subscriber communication lines
A method for providing automatic restoration of network access for user lines within a communication system. The user lines interface with groups of transmission lines that include dedicated...
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6552998 |
Two-way communication system, and delay and transmission level methods
A two-way communication system that can shorten the system recovery time when a link switching operation between a center station and a relay station occurs over two-way CATV networks, passive...
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6512740 |
Telecommunications network distributed restoration method and system
A network wherein a plurality of links connects a plurality of nodes such as cross-connects in a communication circuit network with paths interconnecting the nodes, and with there being spare...
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6480551 |
Signal processing device and method for switching signal processors thereof
A digital broadcast program broadcast with a first network is transmitted to a second network. A tuner 41 selects digital broadcast signal having a predetermined transmission frequency and ECC...
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6469632 |
Component selector assembly
A component selector assembly 10 which pseudo-randomly energizes components 40-54 use of received data 60.
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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...
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6433689 |
System for supervision and control of objects or persons
A system for supervision and control of objects or persons within a limited area, such as a building, comprising a plurality of electronic identification chips for placing on respective...
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6430150 |
Communication node, restoration method and communication network
In a telecommunication network, each node is provided with the same physical topology information relating to a physical construction of telecommunication paths included in the telecommunication...
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6388988 |
Method and system for automatic line protection switching of embedded channels
A communications network includes a transmit node and a receive node. A first transmission line extends between the transmit and receive nodes and includes a primary embedded channel for carrying...
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6348874 |
Power distribution to nodes in a distributed system
A system in which remote nodes are supplied with electrical power using existing network communication links. A communication device in a system according to the present techniques routes...
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6324162 |
Path-based restoration mesh networks
Restoration of service in a mesh network (10) upon the failure of a working channel (16) on a link (14 I ) connecting a pair of nodes (12A and 12D) is accomplished by first attempting to route...
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6307834 |
Redundant transmission system with disconnection of a transmission path exhibiting faulty transmission behavior
In a transmission system in which redundant message cells are forwarded via redundant transmission paths according to the Asynchronous Transfer Mode, a transmission path is blocked after the...
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6269402 |
Method for providing seamless communication across bearers in a wireless communication system
A communication session is established between a client (102) and a server (104) over a first bearer network (106). A session identifier is produced (304), which is compressed (306). Messages or...
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6256291 |
Method of switching between redundant routes in communication system devoid of redundant transmission
Disclosed is a method of switching between redundant routes of a communication system in which terminal stations are connected by an uplink transmission line and a downlink transmission line that...
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6252846 |
Automatic switching system
An automatic switching system, in which the arrangement of apparatus can be simplified and a service can be continuously performed wherever and whenever any trouble occurs, is provided. The...
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6247063 |
Network terminal equipment capable of accommodating plurality of communication control units
A LAN terminal equipment comprises a plurality of slots, each capable of accommodating a LAN control board, at least one ROM socket capable of holding a MAC ROM, and an input/output control unit....
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6243752 |
Transmitting data between a host computer and a terminal computer
A terminal computer is used to send instructions to a host computer through a public network to open and close application programs and to transmit data between the application programs and the...
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6141532 |
Transmission line switch-over control system
There is provided a transmission line switch-over control system capable of significantly improving the nonoperational situation such as circuit disconnection during call or call quality...
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6141320 |
Method and apparatus for nested automatic protection switching
Nested APS is implemented in a simple configuration for synchronous transmission systems such as SONET and SDH. Bits 5 to 8 of the received K1 byte are compared with line numbers of lines...
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6122249 |
Add-drop multiplexing apparatus
An add drop multiplexing (ADM) apparatus has a simple and compact structure. The ADM apparatus has high-order interfaces connected to a high-order network, path setting units each for setting a...
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6108301 |
Circuit, architecture and method for redundant data communications links
A communication unit, coupled to a communication link, may be enabled if a signal is present on the communication link and the unit is active. However, if no signal is present on the communication...
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6108300 |
Method and apparatus for transparently providing a failover network device
A system and method are disclosed for transferring a network function from a primary network device to a backup network device. The backup network device first detects that the primary network...
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6105055 |
Method and apparatus for asynchronous multimedia collaboration
A multimedia collaboration system combines unique multimedia communications and media processing mechanisms with off-the-shelf components that support information sharing and distribution. More...
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6101167 |
Path switching system
A path switching apparatus which performs high-speed switching for quick recovery of an entire network is provide. The apparatus in advance stores information on possibility that an error affects...
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6064647 |
Method and system for sending frames around a head of line blocked frame in a connection fabric environment
A method and system for transmitting data frames from a source path to a primary destination path having more than one source path requesting access thereto in a crossbar interconnect network...
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6061329 |
Multiplex transmission system and apparatuses for same
An SDH multiplex transmission system has a transmission terminal apparatus and a reception terminal apparatus that are connected to each other through channels of an N+1 redundant structure. The...
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6038212 |
Method and system for optimizing the connection set up time in high speed communication networks for recovering from network failure
This method enables optimizing the time required for reestablishing connections between end users attached to a data communication network, which connections were disrupted due to a network...
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6031906 |
Digital loop carrier system with automatic reprovisioning of dedicated lines
A digital loop carrier system in a communications network that provides automatic restoration of network access for user lines in the event of a failure. The system includes a plurality of user...
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6021111 |
Unit switching apparatus with failure detection
A unit switching apparatus includes first and second current units, a spare unit, and a switching unit. Each of the current units includes a communication circuit for performing communication in...
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5999103 |
Method and system for assigning spare transmission links to restoral routes
A restoration system for restoring a communications network following a failure of one or more communications network components. The restoration system identifies spare segments and spans of spare...
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5978354 |
Optical transmission system and transmission line switching control method
Disclosed is an optical transmission system for transmitting data via an optical transmission line in accordance with a frame format having overhead which includes a K1 byte used for a switching...
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5940410 |
Method of transmitting data reliably over N normal channels, and over at least one back-up channel, and a transmit end station, a receive end station, and a relay station corresponding to the method
The invention concerns a method of transmitting data reliably over N normal channels (3), where N≥1, and over at least one back-up channel (4), between a transmit end station (1) and a receive...
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5936938 |
System and method for providing switching between paths in a telecommunications system
An automatic switching system and method is provided for switching between paths in a telecommunications switching system. A first circuit in each path receives substantially identical...
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5933590 |
Restoration of multiple span cuts with priority hand-off using SHN
A system and method for restoring communications in a network having multiple span failures. After a failure is detected, a sender node in each of the plurality of sender-chooser pairs sends a...
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5933422 |
Communication network recoverable from link failure using prioritized recovery classes
In a self-healing network, virtual paths between user terminals are classified according to different fault recovery priority levels and communication links are mapped to virtual paths accommodated...
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5884017 |
Method and system for optical restoration tributary switching in a fiber network
A method and system for restoration of a fiber communication network through optical tributary switching. Multi-port optical cross-switches switch traffic at the tributary side of lightwave...
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5870382 |
Automatic protection switching system for ATM exchange network
An ATM exchange network system in which a first equipment and a second equipment are connected through a duplex communication line comprising a working line and a protection line. In this system,...
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5852600 |
System and method for resolving substantially simultaneous bi-directional requests of spare capacity
In a self healing network (SHN) distributed restoration algorithm (DRA) scheme, in the case where two adjacent tandem nodes are contending for the same spare link, an arbitration scheme is used to...
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5835483 |
Information transmission system utilizing at least two channels in the redundancy mode
A transmission system uses two channels (CHA, CHB). It includes a transmitting apparatus (1) having an input access (5) for receiving the information to be transmitted, output accesses (7A, 7B)...
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