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5477530 |
Method and apparatus for managing communications between multi-node quota-based communication systems
First and second multi-node communication paths are connected via a bridge node. Each path employs a quota allocation scheme for access thereto by the nodes thereon. A first quota allocation signal...
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5453980 |
Communication network and computer network server and interface modules used therein
A communication network (VCN) offering an ETHERNET service to a plurality of local terminals (ELT1, ELTN, TLT1, TLTN1-8), typically computers, is proposed. Flexibility and cost are enhanced with...
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5432907 |
Network hub with integrated bridge
A hub circuit with an integrated bridge circuit carried out in software including a switch for bypassing the bridge process such that the two bridged networks effectively become one network. An...
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5430728 |
Single-route broadcast for LAN interconnection
In LAN interconnect, it is necessary to perform route discovery to locate a destination device. A novel method of selecting designated source routing bridges and a new single-route broadcast scheme...
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5406549 |
Ring interworking between path-switched ring transmission systems
The possibility of passing off apparent "good" higher level digital signals that may include corrupted or failed lower level digital signals because of inter-ring grooming of the lower level...
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5383191 |
Dual ring reconfiguration switching unit
A multiport access and reconfiguration unit for use in a dual token ring network is provided with three adapters and, depending on error conditions, can assume one of a plurality of recovery states...
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5379291 |
Apparatus for fiber distributed data interface dynamic station bypass via skipping and hopping
A rights controlling concentrator (RCC) is an apparatus for separating and controlling "rights of receiving" and "rights of transmitting" of a group of stations or groups of stations on a...
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5315582 |
Communications system between LAN's of different types
A communications system between LANs of different types constituted of a backbone LAN (1) and a plurality of branch LANs (7, 7') connected to said backbone LAN (1) through a node (2A, 2B, 2C, 2D)....
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5220562 |
Bridge apparatus and a communication system between networks using the bridge apparatus
Frontend LANs connecting plural stations are connected to plural nodes of a backbone LAN respectively. The backbone LAN is constituted by plural physical or logical links, and each node corresponds...
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4933937 |
Network adapter for connecting local area network to backbone network
A table memory stores an address transformation table (AT table) which contains no address pairs therein before initialization of the system. A hash function memory stores a plurality of hash...
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4908824 |
Communications system comprising a ring-shaped network which is provided so as to provide a communications network in the subscriber line region of a digital switching equipment
A ring-shaped network (RN) which is an offering network is inserted into a subscriber line region of a switching equipment (VE). A gate (GWE) is arranged in one (AEI) of the acceptance devices of...
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4752698 |
Emergency supervisory system
The present invention relates to an emergency supervisory system which comprises a plurality of supervisory apparatus provided for respective supervisory regions and connected in parallel with each...
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4706081 |
Method and apparatus for bridging local area networks
A communications system interconnects local Area Networks (LAN's) across broadcast simplex channels. The LAN's are connected independently and transparently of protocols above the data link layer...
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4255741 |
Communication module
A loop circuit interface module enabling a plurality of data terminals remote from each other and from a central controller to communicate with each other and the central controller over a...
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