Abstract: A virtual access node comprising of a Central Office (CO) and more than one Customer Premises Equipment (CPE), that can be a mixture of a SDN native and a SDN non-native device, supports a virtualized access Network Node Interface (NNI) in the CO and a virtualized access User Network Interface (UNI) in the CPE. A Software Defined Network (SDN) Management System using a SDN control message configures an user data flow in the virtual access node by designating a virtualized access NNI, a virtualized access UNI, and flow forwarding configuration parameters without specifying exact flow forwarding resources. The virtual access node allocates and configures a set of required flow forwarding resources which are distributed in the CO and/or the CPE by that device oriented partitioned control messages with translating in the legacy control message when the resource is in a SDN non-native device.

Abstract: A method for processing messages within a telecommunication network, including receiving, by a central office (CO) from a network manager, a message packaged within a first data frame, the message conforming to a first protocol and being addressed to a customer premises equipment (CPE), wherein the CO communicates with the network manager using the first protocol, and communicates with the CPE using a second protocol, determining if the CPE to which the message is addressed supports the first protocol, when the determining is affirmative, then encapsulating the message conforming to the first protocol within a second data frame confirming to the second protocol, when the determining is not affirmative, then translating the message from the first protocol to the second protocol, and packaging the translated message within a second data frame confirming to the second protocol, and sending the second data frame to the CPE using the second protocol.

Abstract: A method for control an access network node which is comprising of central office (CO) and more than one customer premises equipment (CPE), provides a single management interface in the CO to a software defined network management system, that utilizes a software defined network protocol, the interface allows the software defined network management system to configure an user flow in the access network node by assigning a network node interface resides in the CO which interconnects to a core network and an user network node interface resides in the CPE which interconnects to a user terminal and a required user data forwarding function for the flow, the access network node maintains its own forwarding resources and it determines available resources required for the forwarding request, configures the CO and/or the CPE with a protocol translation which adapts the software defined protocol with the legacy protocol when the CO and/or the CPE works with the legacy protocol.

Abstract: A telecommunication node within a network of nodes managed by more than one network manager, including a plurality of management interfaces, each management interface operative to communicate with a different network manager using a respective protocol, wherein at least two of the protocols are different protocols, a plurality of hardware resources, each resource being accessed through a respective application programming interface (API), and a cross-connect module, coupled with the management interfaces and with the hardware resources, operative to make each management interface interoperable with all of the APIs.

Abstract: A method for processing messages within a telecommunication network, including receiving, by a central office (CO) from a network manager, a message packaged within a first data frame, the message conforming to a first protocol and being addressed to a customer premises equipment (CPE), wherein the CO communicates with the network manager using the first protocol, and communicates with the CPE using a second protocol, determining if the CPE to which the message is addressed supports the first protocol, when the determining is affirmative, then encapsulating the message conforming to the first protocol within a second data frame confirming to the second protocol, when the determining is not affirmative, then translating the message from the first protocol to the second protocol, and packaging the translated message within a second data frame confirming to the second protocol, and sending the second data frame to the CPE using the second protocol.

Abstract: A passive optical network (PON) device, system and method include an optical line terminal (OLT) receiver configured to receive multiple signals at different wavelengths simultaneously and enable multiple transmitters to operate at the same time during one upstream time slot. The optical line terminal employs Orthogonal Frequency Division Multiple Access (OFDMA) to transparently support a plurality of applications and enable dynamic bandwidth allocation among these applications where the bandwidth is allocated in two dimensional frequency and time space.

Abstract: In a center-side terminal of an optical network, said center-side terminal connectable to a plurality of subscriber-side terminals via a passive optical splitter, a subscriber processing storing section is adapted to store a relationship between subscriber numbers regarding the subscriber-side terminals and processing contents allocated thereto, and a processing section is adapted to perform a processing upon a packet received from the subscriber-side terminals or to be transmitted thereto. The processing is determined in accordance with the relationship stored in the subscriber processing storing section using one of the subscriber numbers regarding the packet.

Abstract: A passive optical network (PON) device, system and method include an optical line terminal (OLT) receiver configured to receive multiple signals at different wavelengths simultaneously and enable multiple transmitters to operate at the same time during one upstream time slot. The optical line terminal employs Orthogonal Frequency Division Multiple Access (OFDMA) to transparently support a plurality of applications and enable dynamic bandwidth allocation among these applications where the bandwidth is allocated in two dimensional frequency and time space.

Abstract: A subscriber loop remote control apparatus that allows communication terminals to transmit VLAN packets without imposing a load on a router. A subscriber loop remote control apparatus is provided with a virtual interface table for associating a subscriber premises terminal identifier individually assigned to a subscriber premises terminal connected through a communication cable to a port assigned to every packet of each group which constitutes a VLAN with the port number of the port to store and manage them. When receiving a packet, the subscriber loop remote control apparatus determines whether or not a subscriber premises terminal identifier contained in the packet matches any of those in the virtual interface table. When the subscriber premises terminal identifier matches one of those in the virtual interface table, the subscriber loop remote control apparatus returns and transmits the packet to the destination before the router side.

Abstract: In a center-side terminal of an optical network, said center-side terminal connectable to a plurality of subscriber-side terminals via a passive optical splitter, a subscriber processing storing section is adapted to store a relationship between subscriber numbers regarding the subscriber-side terminals and processing contents allocated thereto, and a processing section is adapted to perform a processing upon a packet received from the subscriber-side terminals or to be transmitted thereto. The processing is determined in accordance with the relationship stored in the subscriber processing storing section using one of the subscriber numbers regarding the packet.

Abstract: An object of the present invention is to provide a priority class selection type communication system and method wherein users can ensure transmission channel, select priority class, change priority freely according to their conditions, thereby optimizing communication cost. An user terminal comprises a connection opening trigger detecting unit for detecting start of transmission and reception, an information requesting unit for requesting network information of each priority class, a priority class selecting unit for selecting a priority class, a utilization requesting unit for requesting to utilize the selected priority class and a transceiver for transmits and receives information by permission ID. A network control unit comprises a network information transferring unit which transmits network information, a network database which stores network information and a request accepting unit which transmits permission ID.

Abstract: An ATM transmitter distributes an ATM transmission process function to plural electronic circuit packages and performs transmission process by forming routes between the plural circuit packages. The routes can be flexibly varied while a configuration of a variety of process functions are managed. The cell distribution section which has plural input and output terminals connected to respective electronic circuit packages forms a route among respective ones of the arbitrary input and output terminals so that receive ATM cells are input and output between respective electronic circuit packages. Process functions are arranged for each electronic circuit package. The function configuration of all the electronic circuit packages is previously set. Thus, a route formation is indicated to the cell distribution section. In other case, input and output terminals for each route are sequentially arranged along the route. The control order of receive ATM cells is previously set.

Abstract: The present invention is a transmission system with a performance monitor function. The system has an end office, an opposite office located opposite the end office and an intermediate office located between the end office and the opposite office. In the transmission system each of the end office, the opposite office and the intermediate office has a transmitter/receiver for transmitting/receiving information and a performance monitor for monitoring performance of a transmission line. The intermediate office has a switch for switching lines and a bypass for bypassing the switch and for transmitting/receiving a signal to/from an adjacent office while the performance monitor is operating.

Abstract: 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 by the links and to bandwidths remaining in the respective links. Each priority level guarantees a fault recovery with a different amount of network resource. In response to a fault-indicating message identifying a failed virtual path, a search is made through the link-path table for an alternate virtual path and a remaining bandwidth of each link that comprises the alternate virtual path in descending order of the priority classes. In accordance with the priority class of the failed virtual path relative to the priority class of an existing virtual path that shares the same link with the alternate virtual path, a decision is made on whether or not the bandwidth guaranteed by the priority class of the failed virtual path can be allocated to the alternate virtual path from the remaining bandwidth.

Abstract: A redundant system includes a redundant structure and a selector of the output signals of the redundant structure the selector further including a selection/operation signal converter and a path operation signal processor provided in each circuit package. The signal converter converts selection signals of the selector into a path operation signal indicative of operation or non-operation of each signal path in each of the parallel connected systems. The signal processor transfers the path operation signal from a downstream circuit package to an upstream circuit package and judges path operation condition of the signal paths passing through each circuit package based on the transferred oath operation signal. Using the judgement, each circuit package can perform on/off control of the indication lamp by itself.

Abstract: In a cross connecting network wherein a branching device branches a group of digital signals into duplexed groups for supply to two switch matrix devices, each including switch elements in foremost through last stages, at least three in number, to cross switch the digital signals through cross connected paths with a switch request flag superposed on each digital signal downstream of a defective element of the switch elements and wherein a redundancy switching device detects the flag to make a control device control the switch elements of the last stage selectively connect the cross connected paths of the switch matrix devices path by path to switching device paths, a monitor is used in the cross connected paths of each switch matrix device before each switch element of the second through the last stages to detect a monitor datum sent thereto together with each digital signal to locate the defective element, and to assist the control device in path by path selecting the cross connected paths of each switch mat

Abstract: In a cross-connection network including first and second matrix switching units supplied with input digital signals through a branching circuit, first through N-th transmit switching circuits includes primary and secondary first through primary and secondary N-th transmit input terminals connected to primary and secondary first through primary and secondary N-th matrix output terminals of the first and the second matrix switching units, respectively, first through N-th transmit output terminals, and primary and secondary first through primary and secondary N-th abnormal signal detectors, respectively. The transmit switching circuits supply the input digital signals from the primary transmit input terminals to the transmit output terminals, respectively, when the secondary abnormal signal detectors detect abnormalities of the input digital signals, respectively.

Abstract: On confirming whether or not a matrix switch correctly carries out cross-connection between input and output terminals of the switch in accordance with connection information signals memorized in a memory included in a controller, a cross-connection confirming system makes use of input digital signals which are sent from input lines to output lines through the matrix switch. Connected between the input lines and the input terminals, processing circuits make the input digital signals comprise input terminal codes assigned to the input terminals to which the processing circuits are connected, respectively. Judging circuits are connected to the output terminals to judge whether or not the input terminal codes included in output digital signals are coincident with output signals sent from the memory, respectively.

Abstract: A data scrambler, which transmits a data sequence, includes circuitry to suppress consecutive occurrences of a predetermined number of data sequence bits having the same value. The number of consecutive occurrences of bits having the same value are counted. When the number of consecutive occurrences of bits having the same value reaches a predetermined number, at least one of the bits of the transmitted data sequence is inverted. Complementary circuitry is included in a data descrambler so that the bits that were inverted by the data scrambler can be re-inverted to their original value by the descrambler.

Abstract: A self-distributed transmission line failure restoring system includes three nodes or more arbitrarily interconnected by bidirectional transmission lines. Each of the nodes includes an alternate route search information transmitting unit, an alternate route connection information transmitting unit, a check information transmitting unit, and a check information receiving unit. The alternate route search information transmitting unit transmits alternate route search information to all of the connected transmission lines. The alternate route connection information transmitting unit forms alternate route connection information having a node trace and transmitting the information to a connection destination node. The check information transmitting unit receives the alternate route connection information to set an alternate route and transmitting check information having a node trace to a connection source node through the set alternate route.