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6252888 |
Method and apparatus providing network communications between devices using frames with multiple formats
A method and an apparatus providing data communications among network devices using tagged and untagged frame formats. In one embodiment, a virtual local area network (VLAN) is implemented using...
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6252852 |
Network fault system
The fault system includes an interface for accessing first data fault representative of faults in the reported by users of mobile stations of the network, an interface for accessing second fault,...
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6252853 |
Switching router and a datagram transfer system
A label switching router which includes a data relay controller for transferring IP datagrams and controlling the transfer, detecting any transfer IP datagram satisfying a particular condition, and...
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6240067 |
Method and apparatus for managing control messages in a communication system
The present invention provides an auto-cancelling buffer and method that ensures that time sensitive control messages such as congestion alarms and recovery messages are efficiently moved between...
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6239699 |
Intelligent alarm filtering in a telecommunications network
Redundant alarm messages generated by a plurality of Network Elements (NEs) in a Synchronous Optical Network (SONET) or Synchronous Digital Hierarchy (SDH) subnetwork are suppressed by a filter...
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6233072 |
Method and system for restoring coincident line and facility failures
The system and method of the present invention provide restoration of coincident line and facility failures. The system of the present invention includes light termination equipment (LTE) that is...
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6233225 |
Line coding mismatch detection technique
Line coding mismatches on a transmission channel in a telecommunications network will manifest a constant error signature having a certain number of errored seconds, severely errored seconds,...
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6233247 |
Method and system for avoiding communication failure in CDMA systems
A method and system for avoiding communication failure in CDMA systems. The method system achieve their objects as follows. At least one CDMA carrier acquisition failure is detected. Channel...
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6226297 |
Method and system for providing redundancy to asynchronous transfer mode emulated local-area networks
A method for providing redundancy to an Asynchronous Transfer Mode (ATM) emulated local-area network (LAN) is disclosed. The ATM emulated LAN is served by a primary LAN Emulation Server, a...
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6212167 |
Multiplexing transmitter
An optical multiplexing transmitter having functions for dropping or demultiplexing an optional time slot of a channel of a high-ordered group to optional channels of a low-ordered group channels...
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6201995 |
Wiring method and apparatus for distributed control network
A multi-tier, master-slave control network having multiple buses comprises a master node and a plurality of slave nodes operating over each of the multiple buses. Each master node comprises a...
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6195330 |
Method and system for hit-less switching
A system and method are disclosed for processing digital signals in a telecommunications system that allow hit-less switching between a first digital signal in which a first payload, a first...
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6188672 |
Circuit arrangement for sensing errors in bit patterns
A circuit arrangement for sensing errors in bit patterns for recording and plotting the occurrence in time, precisely to a bit, of transmission errors in a binary test signal. A pulse-generating...
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6185519 |
Method and system for feature interaction detection in a telecommunication network
Methods and systems disclosed efficiently detect potential interactions between features in a telecommunications network. The methods and systems specify AIN (Advanced Intelligent Network) and...
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6185192 |
Process for fetching out error statistics data
For implementing the method for reading error statistics data, a hardware configuration has processing units (CTR0, CTR1) that operated in microsynchronous parallel operation for the processing of...
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6178327 |
Method and apparatus for providing fault tolerance in frequency reuse wireless communication systems
A base station (106) is connected to several communication servers (114, 116, 118) by a corresponding number of communication links (128). Should one or more of the connections fail, the base...
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6175565 |
Serial telephone adapter
A serial telephone adapter for connection between a telephone and a personal computer to facilitate voice over computer-based networks such as the Internet. The adapter also includes an interface...
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6172966 |
Diagnosis of networks of components, with stripwise modeling
An n-tuple defines an envelope of a variable over a time interval. An input memory receives blocks of measurements made at known points of the network and converts them into initial n-tuples. In a...
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6167265 |
Method for managing system fault for CDMA home location register
A method of managing system faults which enables system operators to easily detect the state of all the systems constituting the Home Location Register (HLR). Even when several sites are added,...
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6167026 |
Programmable error control circuit
In a loop network system, a method and apparatus for automatic bypass of a node port associated with a hub port when the node port generates a number of errors beyond a threshold level. In one...
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6154444 |
Source routing method for fast connection re-establishment in response to early-arriving trouble report messages
In a connection-oriented network, a route table and a network resource table are provided in a source node which updates the network resource table in response to a topology state message which is...
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6154447 |
Methods and apparatus for detecting and locating cable failure in communication systems
In switching centers serving multiple local access providers, a problem arises in detecting cable failure and identifying the provider of the failed cable connected between the switching center and...
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6151306 |
Vehicle multiplex communication system
A vehicle communication multiplex system comprises: a bus; and a plurality of nodes connected to the bus, wherein transmission right circulates to the nodes in a predetermined order and send a...
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6144642 |
Signal transfer device in a telecommunications network
Disclosed is a transfer device within a telecommunications network capable of transferring control information at high speed without reducing main signal through-put and also capable of greatly...
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6134237 |
Method and apparatus for tracking data packets in a packet data communication system
A packet data communication system (100) employs a method and apparatus for tracking data packets in the packet data communication system. A sending communication device (e.g., 101) transmits a...
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6134221 |
Method for evaluating a communication link between a first and a second communication site
The present invention provides a method for evaluating a communication link between a first communication site and a second communication site. The first and second communication sites increment a...
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6128313 |
Apparatus and method for filtering line noise and improper packet formatting
Exceptions to valid protocol categories are filtered from a bit stream. Bit sequences between flags are processed to detect bit sequences that do not qualify as valid packet data but do qualify as...
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6122248 |
Data transmission system with bus failure recovery
A data transmission system capable of ensuring proper operation even when any nodes-to-bus connection, which is not allowed by restrictions, is made. The system implements data transmission among a...
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6115361 |
Link incident reporting extended link service for networks
A method for implementing a link level service in a computer network having a first port device and a second port device coupled by a communication link. Prior to a link incident being reported,...
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6115362 |
Method and apparatus for determining frame relay connections
A system determines that a frame relay connection exists between an interface on a first interface device and an interface on a second interface device, for example by comparing addresses resident...
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6111879 |
Telephone service system in a asynchronous transfer mode private network
A telephone service system in an ATM private network, includes: a PSTN interface unit for performing PCM with an analog telephone signal transmitted from a channel in a PSTN, converting the...
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6104695 |
Repair TTL computation and correction mechanism to perform localized repairs in a multicast data distribution setup/framework
Determination of a Time To Live ("TTL") hop count for repair data units transmitted from a repair head to a standard destination device in a communications network is facilitated for multicast...
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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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6094416 |
Multi-tier architecture for control network
A multi-tier, master-slave control network has at least three data buses. A first-tier master node and a plurality of first-tier slave nodes are connected to a main data bus. One or more first-tier...
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6091711 |
Multiplex communication method and multiplex communication apparatus
In a multiplex communication method for implementing multiplex communication between a plurality of circuit units, a format of a transmitted data signal not only is formed of serial data consisting...
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6081535 |
STM-16 network-node interface in an ATM switch and the fault diagnosing method thereof
The invention is to provide an STM-16 Network-Node Interface(NNI) which is capable of exactly checking whether a fault is generated on any station when the VC-4 AU received from a remotely located...
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6081503 |
Control architecture using an embedded signal status protocol
A network element with a centralized switch fabric is able to support multiple switching functions while meeting established performance requirements by using a control system based on an embedded...
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6075774 |
Method and device for generating a frame check sequence
A self-starting brushless electric motor having: a first motor part (stator) (11) with poles (15S, 16A) arranged in a first pole row, said poles comprising for each winding phase a pole group (13)...
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6069874 |
Radio communication apparatus wherein alert of message omission is not carried out erroneously
In a communication apparatus comprising a receiving section (102, 103, 104) for receiving message data transmitted from a base station as received message data, and a detection section (105) for...
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6067288 |
Performance monitoring delay modules
A method is disclosed for processing PM signals to be optionally applied to an accumulator PM data module for further analysis including the steps of monitoring first and second transmission line...
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6055226 |
Method to signal a failure in a mixed PDH/SDH network in order to enable the latter to provide a service such as a protection mechanism
To signal a failure in a mixed PDH/SDH network in order to enable this network to provide a service such as a protection mechanism, an alarm indication has to be provided to an SDH node in the...
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6052061 |
Circuit for switching a protection line between a common section and a channel section
A circuit for performing a switching of a protection line between a common section and a channel section includes a common section and a channel section connected by signal lines. The common...
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6041037 |
ATM virtual path switching node
In an ATM virtual path switching node, upon being notified of a current virtual path by a virtual path monitoring unit, a link fault determination unit compares the number of faulty current virtual...
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6041062 |
High-speed synchronous multiplexing apparatus
A high-speed sprchronous multiplexing apparatus has a low-speed device and a high-speed device and employs electrical signals to interface the devices with each other. The low-speed device is...
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6038219 |
User-configurable frame relay network
A user-configurable frame relay network system is provided. In accordance with one aspect of the invention, the system is designed around a service provided frame relay network. More specifically,...
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6038211 |
Terminal for a bidirectional synchronous digital hierarchy link with automatic protection switching conveying multiplexed data
A terminal for a bidirectional synchronous digital hierarchy link with automatic protection switching conveying multiplexed data includes two send devices. Each send device includes a device for...
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6034948 |
System for testing repeating installation
A system tests a repeating installation having transmitter-receivers (3, 4) and a line controller (2). The system includes the repeating installation to be tested, a first tester (10), a second...
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6034995 |
System for the transmission of data via a differential bus
The transmission of data via a differential bus by means of balanced signals is not only reliable, but also offers the advantage that in the event of various single faults, i.e. faults concerning...
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6028844 |
ATM receiver
An Asynchronous Transfer Mode ATM receiver is disclosed. The ATM receiver comprises an input that receives an ATM cell. A first-in first-out (FIFO) is coupled to the input. The FIFO stores the ATM...
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6026076 |
Detecting digital multiplexer faults
Apparatus and a method for testing tiered digital multiplexing apparatus. To test a primary train of tiered demultiplexers, a data path assurance train of demultiplexers and a selector is used to...
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