ECI Telecom LTD Patent applications |
Patent application number | Title | Published |
20140321844 | METHOD OF CARRYING OUT FAST SWITCHING IN OPTICAL COMMUNICATION NETWORKS - method is provided for reducing adverse effects of a link failure in an optical network, wherein the optical network comprises at least one main link which comprises a first optical fiber amplifier (OFA), and along which communications traffic is currently being conveyed, and at least one protection link which comprises a second optical fiber amplifier (OFA) along which communications traffic is not currently being conveyed, wherein the at least one protection link is adapted to carry out communications traffic diverted from the at least one main link when a failure occurs at said at least one main link or at one or more nodes associated therewith, and wherein the method is further characterized in that when no communications traffic is being conveyed along the at least one protection link, one or more pumps of the second OFA is operating to provide an output having a pre-defined power level. | 10-30-2014 |
20140204906 | METHOD AND APPARATUS FOR PROVIDING COMMUNICATION SERVICES TO A MOVING PLATFORM - A method and apparatus are described for providing communication services to a mobile platform while moving, wherein the mobile platform communicates along two current communication links extending between the mobile platform and two network gateways. The method comprises: setting an H-VPLS service to enable provisioning of L2 services to the moving platform via at least one of the two current communication links; enabling the moving platform to exchange communications along one or both communication links; replacing one of the two current communication links while the mobile platform is moving, with another communication link extending towards a third network gateway, by using Pseudo Wire Redundancy (PWR) to re-route traffic from the communication link being replaced to the other communication link, thereby allowing the moving platform to continue provisioning the L2 services while communicating with two network gateways, being the third network gateway and one of the former two network gateways. | 07-24-2014 |
20140153377 | Method for Managing Data Transport Using Crosstalk Data - A method and device are provided for affecting data conveyance within a cable comprising a plurality of copper wire lines. The method comprises: providing information about crosstalk interference experienced by the copper wire lines; for each copper wire line experiencing crosstalk interference (interfered line), identifying which other copper wire lines induce crosstalk interference to that interfered line; partitioning the copper wire lines into interference groups, where each interference group comprises at least one copper wire line, wherein at least one of the interference groups comprises at least three copper wire lines, and wherein in case that a given interference group comprises more than two copper wire lines, then each of the copper wire lines belonging to that interference group is subjected to interference induced by another copper wire line that belongs to that interference group; and based on the partitioning step, changing operational settings of at least one copper wire line. | 06-05-2014 |
20140036910 | METHOD OF PROVISIONING H-VPLS SERVICES IN A MULTI-DOMAIN MPLS NETWORK - A method is disclosed for provisioning loop free H-VPLS traffic service in a multi-domain MPLS network having interconnected domains. The method comprises: provisioning pseudo wires (PWs) for MPTMP services in each domain of the MPLS network; defining multiple Split Horizon Groups (SHGs) in the network, wherein each SHG corresponds to a domain, for the H-VPLS service traffic and for each specific node of the MPLS network, automatically assigning indications to SHG and the pseudo wires connected to the specific node, wherein the same indication is assigned to all pseudo wires belonging to the same group (SHG-N), and wherein the step of assigning is characterized in that when traffic belonging to H-VPLS service crosses a border network node located between two interconnected domains, the SHG-N indication of PWs remains the same within a VPLS domain thereby preventing the service traffic from returning to the domain of origin. | 02-06-2014 |
20140036654 | METHOD AND DEVICE FOR SECURED SHARING OF SIGNALS FOR CROSSTALK CANCELLATION - A method is described for reducing interferences in communications exchanged along a plurality of communication channels operated by a first operator, caused by one or more alien communication channels operated by a second operator. The method comprises the steps of: (i) providing the second operator with information that relates to interferences experienced at the plurality of communication channels operated by a first operator, due to traffic conveyed along alien communication channels operated by the second operator; (ii) modifying the original signals conveyed by the second operator along the alien communication channels; (iii) sending the modified signals to the first operator; and (iv) applying the modified signals by the first operator to reduce interferences in communications exchanged along the plurality of communication channels and operated by the first operator. | 02-06-2014 |
20130279340 | CONGESTION CONTROL IN PACKET SWITCHES - A method is provided for managing congestion of traffic in a packet switch, which comprises the steps of: providing more than two different congestion levels at the switch for handling traffic associated with at least two different priorities, one being a low priority traffic and another being a high priority traffic; for each traffic flow having a specific destination and priority, determining a current congestion level that matches a congestion control level which is selected from among the more than two congestion control levels, and associating a different set of operations for handling each respective traffic flow, depending on its priority and its current congestion level, and for each traffic flow, performing operations that match the respective associated set of operations, and wherein a rate at which these operations are performed for each respective traffic flow increases when a higher congestion level occurs at that respective traffic flow. | 10-24-2013 |
20130259067 | Method for Providing an MPLS Tunnel with Shared Bandwidth - A method is described for providing an MPLS tunnel adapted for sharing bandwidth (BW) in an MPLS network. The method comprises establishing the MPLS tunnel as a working MPLS tunnel (ST) to be shared by a plurality of pseudo wires (PWs) passing at least partially along the path of the tunnel ST, wherein a predetermined bandwidth of the bandwidth allocated for the ST is adapted to be shared by the plurality of PWs, of which at least one PW has a different source point and/or a different destination termination point at the ST path, from at least one other of the plurality of PWs. | 10-03-2013 |
20130188676 | METHOD FOR REDUCING DATA ALLIGNMENT DELAYS - A method is provided for synchronizing binary data transmitted in parallel via N channels. The method comprises performing at the receiver side, a data-clock-alignment for the data in the N channels by selecting an optimal reference channel to which no delay will be added, and adding an appropriate delay to each of the remaining channels, until their respective centers of valid data portions are aligned to each other, and associating clock edges with the centers of the valid data portions. The method is characterized in that the alignment is performed regardless to whether binary word alignment is simultaneously achieved or not, and wherein the optimal reference channel allows aligning the centers of valid data of all the channels while adding a minimal delay to a worst channel from among the remaining channels, wherein the worst channel carries valid data portions which are maximally shifted from those of the reference channel. | 07-25-2013 |
20130188476 | METHOD FOR PROVIDING PROTECTED CONNECTION BETWEEN L2 COMMUNICATION NETWORKS - A method and system are provided for connecting at least three provider peer elements PEs located in two L2 network sites, via a provider network, wherein at least in one of the L2 sites and two of the provider peer elements PEs are connected to a customer equipment CE forming together a dual homing structure. The method and system are characterized in that they rely on the use of only a single PW in the provider network that extends between PEs of the two L2 network sites while ensuring traffic protection for the PW in the provider network, and ensuring that in case of a failure of one of the PEs or its connection to the customer equipment at one of the sites, the other L2 network site remains unaware of the failure, so that once established, traffic communication over the PW is maintained like no failure has happened. | 07-25-2013 |
20130163618 | METHOD FOR MONITORING AND MANAGING DATA NETWORKS - A method and a network node are provided, for distributing timing information in a packet-switched network. The method is characterized in that at least one network node used as a quasi slave node is located at a path extending between a master node and a slave node. The method comprising a step of calculating the timing at that network node, by passively processing packets belonging to a PTP-type packet stream being exchanged between the master node and the slave node and conveyed via that intermediate network node operating as a quasi slave. | 06-27-2013 |
20130094355 | METHOD FOR FAST-RE-ROUTING (FRR) IN COMMUNICATION NETWORKS - A method is described to enable carrying out a fast reroute protection technique which provides both link and node protection without traffic duplication, without the need to distinguish between link and node failures, and without replicating traffic. The technique covers concurrent Working and backup logical path failures, and in particular LSP logical paths. The method is adapted to provide a “Dual Failure Protection” (DFP), and is expandable to various multi-failure scenarios. | 04-18-2013 |
20130077916 | METHOD AND MODULE FOR SWITCHING OPTICAL SIGNALS HAVING DIFFERENT MODES OF PROPAGATION - A method and module for affecting controlled switching of optical signals having different modes of propagation, wherein the module being provided with at least two multi-mode ports MMPs and a plurality of single-mode ports SMPs, the method comprises: inputting at least one multimode optical signal to an MMP of said MMPs; inputting the single mode optical signals to the SMPs; performing mode processing of one or more of the single mode and multi mode optical signals within the switching module, controllably and selectively switching different optical signals inputted to different ports of the module, preferably based on received feedback related to quality information, thereby allowing switching between single mode ports, between multi-mode ports, and between single mode and multi mode ports. | 03-28-2013 |
20130058257 | METHOD FOR MANAGING E-TREE SERVICES IN MPLS NETWORKS - A method and device for managing E-tree services in an MPLS network having domains comprising network nodes and links, wherein the network is adapted to accommodate an E-tree structure formed by the network nodes for a specific E-tree service. The E-tree structure comprises a root point communicating with a number of leaf points, so that any network node of the E-tree structure is connected via its ports to links leading to a root point and/or a leaf point of said structure. The method comprises: marking ports of a specific node associated with links leading only to leaf points of the structure while marking differently ports of a specific node, associated with links leading to the root point; marking ports of a specific node connected to incoming or outgoing links of the same domain, and ensuring that traffic will not be returned thereby creating network loops. | 03-07-2013 |
20130051799 | METHOD FOR DISPERSION COMPENSATION IN A MESH OPTICAL NETWORK, AND A NETWORK USING SAME - A method is provided for carrying out dispersion compensation in an optical mesh network supporting simultaneously traffic services being provided at two or three different bit rates including a basic bit rate being 10G bps and at least one higher bit rate selected from among 40 Gbps and 100 Gbps. The method comprises the following steps: providing in-line dispersion compensation for every span in the network so as to reach positive average residual dispersion RDS per span extending to less than about 3 km; providing start points of possible trails in the network with respective external, pre-compensation negative Dispersion Compensation modules (DCMs), and providing termination points of possible trails in the network with respective external post-compensation positive DCMs. | 02-28-2013 |
20130045006 | METHOD AND A NETWORK NODE FOR IMPROVING BANDWIDTH EFFICIENCY IN AN OPTICAL NETWORK - A method and system are provided for improving bandwidth efficiency in an optical network by dynamically utilizing unused bandwidth located around preliminarily allocated optical channels. The method comprising monitoring actual bandwidth of the preliminarily allocated optical channels incoming to a node of the optical network, reporting the monitoring results to the controller of that node and further to a network controller, receiving at that node recommendations generated by the network controller, adjusting bandwidth of one or more of the allocated optical channels thereby releasing spare bandwidth for inserting one or more additional optical channels thereat. | 02-21-2013 |
20120224583 | ETHERNET NETWORK WITHIN MPLS NETWORK - Creating an Ethernet network, within an existing MPLS network, for one or more specified traffic services by selecting in the MPLS network one or more bidirectional non-disjoint LSPs between dual-enabled nodes, presenting these LSPs as Ethernet-enabled links, deploying over them an Ethernet protocol and forwarding there-along dedicated Ethernet over MPLS packets according to Ethernet forwarding rules regardless any MPLS labels except for a predetermined dedicated LSP label. | 09-06-2012 |
20120002966 | TECHNOLOGY FOR SIMULATING AND/OR CONTROLLING COMMUNICATION OPTICAL NETWORKS - A technique for controlling power of a network node in an optical mesh network, comprising: determining a number of optical paths ingressing or expected to ingress the node, determining capacity or expected capacity of each of the paths; calculating for each of the paths a virtual input power P | 01-05-2012 |
20120002959 | TECHNOLOGY FOR FAULT ALLOCATION IN PASSIVE OPTICAL NETWORKS (PON) - A method for allocating faults in a passive optical network (PON) by placing a number of passive unique optical correlators in a number of respective diagnostic points of the PON, each of the passive unique optical correlators being responsive to an optical diagnostic signal by returning a predetermined unique matching signal; by further transmitting the diagnostic optical signal in the PON towards the diagnostic points to receive upstream response signals from the correlators. Upon detecting presence or absence, in the received response signals, of a predetermined unique matching signal expected from a specific optical correlator, judging about a fault in proximity of the respective specific diagnostic point. | 01-05-2012 |
20110280580 | TECHNIQUE FOR TRAFFIC RECOVERY IN MULTILAYER COMMUNICATION NETWORKS - A method for recovery of a traffic flow being conducted via a communication line in a multi-layer communication network, the traffic flow comprising a Guaranteed traffic portion GT and a Best Effort traffic portion BET assigned to respective bandwidth resources of the line. The communication network comprising at least two network layers provided with respective traffic recovery mechanisms which utilize bandwidth resources such as time slots, wavelengths, physical links, logical links. The traffic flow may comprise traffic component(s) at different network layers, and the bandwidth resources of the traffic component(s) may be divided into GT and BET portions. The method comprises forming a shared pool of recovery resources, for all the layers in the line, from the bandwidth resources assigned to BET on all the layers. The method further comprises utilizing the shared pool of recovery resources for recovery of any of the traffic components of the traffic flow. | 11-17-2011 |
20110280242 | TECHNOLOGY FOR FLUSHING AND RELEARNING MAC ADDRESSES IN TELECOMMUNICATION NETWORKS - A technique for performing a flushing process at a port of a network switch, where the flushing process comprises a flooding operation and an operation of relearning MAC addresses. In the method, these two operations are made independent, and the operation of relearning MAC addresses is started before termination of the flooding operation. An operation of forwarding packets to the relearned MAC addresses can be started before termination of the flooding operation. | 11-17-2011 |
20110249595 | TECHNIQUE FOR PROVIDING SECURED TUNNELS IN A PUBLIC NETWORK FOR TELECOMMUNICATION SUBSCRIBERS - A secured OTT architecture for Triple-Play services as well as for OTT based cellular service. Any access networks to which customers of the OTT based services belong, form a so-called last mile access segment which is less prone to security attacks than a public network such as the Internet. The customers' equipment (broadband CPEs, say in the form of modems or Femtocell CPEs) can be freed from securing traffic within the non-public access network, while an access node being a border node between the two networks aggregates the traffic from the access terminals and generates one or more secured communication tunnels via the public network for transmitting the aggregated traffic. | 10-13-2011 |
20110236020 | LOW COST HIGH BIT RATE TRANSCEIVING TECHNIQUE FOR OPTICAL NETWORKS - Technique for low cost delivery of a high bit rate electric signal via an optical network, by using a group of optical channels in the network for respectively delivering there-through a number of component electric signals of the high bit rate signal, The optical channels are respectively associated with different wavelengths, and each of the optical channels comprises optical elements suitable for conducting an optical signal having bandwidth significantly narrower than bandwidth of any of the component signals. The high bit rate electric signal is then successively restored from the optical signals delivered via the optical channels. | 09-29-2011 |
20110116621 | POWER SAVING TECHNIQUE FOR TELEPHONY ACCESS NETWORKS - Technique is proposed for managing total power consumption in an access network comprising two or more interface modules serving a plurality of subscriber lines, the technique comprises performing a study of real power consumption of the subscriber lines in the access network on a line-to-line basis, correlating results of the study with inventory information concerning allocation of the subscriber lines to the interface modules and power consumption ensured by said modules to the lines and, based on the correlation, assessing optimality of allocation of the subscriber lines to the interface modules. | 05-19-2011 |
20110051597 | TECHNIQUE FOR TESTING PEERS IN MULTICAST NETWORK DOMAIN - A technique for testing peer nodes in a multicast domain (such as an access network) interconnected with an Ethernet network via an Intermediate Bridge (IB), especially helpful when an individual MAC address of a destination peer node is unknown. The technique comprises a) issuing a Connectivity Fault Management (CFM) message from the Ethernet network, and introducing into the CFM message alternative destination data being different than the individual MAC address of the destination peer node; b) utilizing the alternative destination data, at the IB, for determining topological position or address of the destination peer node, and c) forwarding contents of the CFM message only to the destination peer node. | 03-03-2011 |
20110038642 | TECHNIQUE FOR DETECTION OF OPTICAL DATA SIGNALS - Technology for detecting an optical data signal carried in a combined optical signal that comprises a carrier optical signal modulated by the optical data signal and also comprises ASE noise. The proposed optical data detector/receiver is provided with an SHG device adapted to generate a second harmonic optical signal of the carrier optical signal modulated by the data signal. In the signal, generated by the SHG, the ASE noise will be essentially reduced. | 02-17-2011 |
20100316390 | TECHNOLOGY FOR PROVIDING TELECOMMUNICATION SERVICES TO MULTIPLE OPTICAL COMMUNICATION LINES - A system for serving N optical communication lines by a redundant set of modules in an optical network; where the set of modules comprises N>1 main modules and one backup module, N optical splitters, 2N fiber connections and a control means. In the system, each of the N optical splitters is connected to two different modules of the set by two respective fiber connections out of the 2N connections, while each of the N optical splitters is also coupled to one of the N optical communication lines. The arrangement is such that the control means selectively activates/inactivates any of the fiber connections for respectively enabling/blocking transfer of data there-along; the control means thus ensures that each specific line of the N optical communication lines is always served by either one or another of two different modules. | 12-16-2010 |
20100309821 | METHOD AND NETWORK FOR COMBINED PROTECTION OF ETHERNET TRAFFIC - Technique for protecting different telecommunication services in an Ethernet network using two different loop avoiding traffic protection protocols, by concurrently utilizing the protocols in one and the same network on different loop free logical topologies of the network. The telecommunication services are preliminarily distributed in such a manner, that the services which can be better protected by one of the two protocols and the services better protectable by the other protocol, are carried via the different topologies. | 12-09-2010 |
20100290779 | Method for estimating bandwidth limiting effects in high frequency transmission communication systems - A method for estimating a bandwidth limiting penalty of a chain of bandpass optical filters in an optical telecommunication system. The method is advantageous for systems carrying an optical signal at a bit rate of about 10 Gb/s, wherein average bandwidth of the filters in the chain is of the same order of magnitude as bandwidth of the optical signal. The method comprises selecting a worst case filter, checking the system by testing and/or simulating it as being provided with the selected worst case filter instead of the chain of filters, and then judging about the bandwidth limiting penalty of the chain of filters based on results of the checking. | 11-18-2010 |
20100260505 | SYSTEM AND METHOD FOR GENERATING MULTILEVEL CODED OPTICAL SIGNALS - A simple and effective all-optical system, producing a multilevel coded optical signal based on the M-ASK technology and by the minimized equipment. The novel all-optical modulation technique for optical M-ASK generation is based on nonlinear interaction between optical signals, say between N 2-ASK modulated pump signals having extinction ratio ER | 10-14-2010 |
20100209104 | TECHNIQUE FOR FORWARDING PACKETS IN A GIGABIT PASSIVE OPTICAL NETWORK (GPON) - A technique for forwarding downstream packets in a GPON comprising an OLT unit having a physical PON port connected to N Optical Network Termination (ONT) units by optical fibers. The physical PON port accommodates N individual virtual GEM ports terminated with the N ONT units (ONTs) which form N:1 service. The technique comprises assigning in the physical port of the OLT unit a virtual GEM port being a shared broadcast GEM port terminated with all the N ONTs of the N:1 service. Those downstream packets applied to the physical PON port, which would otherwise be flooded—such as broadcast packets or packets having unknown destination address—will now be forwarded only via the shared broadcast GEM port. | 08-19-2010 |
20100196015 | TECHNIQUE FOR SECURING TRANSMISSION OF DATA ALONG AN OPTICAL COMMUNICATION LINE - A technique for securing data transmission via an optical communication line comprising an optical fiber extending between a first network element and a second network element; the technique comprises conveying a first optical signal carrying data via the optical fiber from the first network element towards the second network element at a predetermined optical wavelength, and conveying a second optical signal at the same predetermined optical wavelength via the same fiber in the opposite direction to create within the optical fiber a combined optical signal such that combination of the first and second optical signals is adapted to hamper an unauthorized non-intrusive extraction of the first optical signal from the combined optical signal. | 08-05-2010 |
20100157794 | METHOD FOR FINDING PROTECTED PATH IN MESH NETWORKS - A method of finding a primary communication path in a mesh network, which would be at once a protected path having a fully guaranteed segmented node or node-link protection. The method comprises defining a required protection type and further selecting each specific path segment of the desired communication path based on initial user's requirements and topology information of the network. Each specific node path segment N for the communication path is selected upon ensuring that it can be protected in the network by a node backup path satisfying the initial user's requirements. Each specific link path segment L for the communication path is chosen if it can be protected in the network by a link backup path satisfying the initial user's requirements and if the node path segment N to which segment L leads cannot be protected by a suitable node backup path. | 06-24-2010 |
20100128344 | TECHNIQUE FOR COMPENSATING UNDESIRED EFFECTS IN OPTICAL LINKS OF AN OPTICAL COMMUNICATION NETWORK - A technique for compensating undesired effects in optical links of an optical communication network, using adjustment modules suitable for inserting into optical links, preferably into the links incoming network nodes. Each of the adjustment modules serves for compensating two or more different physical effects accumulated in the optical link when transmitting an optical signal there-along. The module comprises at least two controllable blocks respectively comprising a variable gain optical amplifier VGA for selectively compensating power loss and a tunable dispersion compensation module TDCM for selectively compensating chromatic dispersion. | 05-27-2010 |
20100104283 | TECHNIQUE FOR MANAGING OPTICAL NETWORKS - For securing from invasion a group of network nodes in a multi-channel optical communication network, providing wavelength selective optical amplifiers WSOA in optical fiber links incoming network nodes of the group, and providing a network controller NC for holding and updating control information about optical channels allowed in specific optical fiber links incoming specific network nodes of the group, and for supplying each of the WSOAs with suitable control information concerning the incoming optical fiber links associated therewith. At each specific WSOA, in response to the received control information, blocking any incoming wavelength except for wavelengths assigned to the optical channels allowed in that specific incoming optical fiber link. | 04-29-2010 |
20100080239 | TECHNIQUE FOR COMBATING LOOPS IN COMMUNICATION NETWORK - Technology for combating loops in multi-domain networks, by assigning to network domains categories, at least such as “high/trusted” and “low/less trusted”, and by making a decision about relearning Forwarding Information Base FIB of any edge node interconnecting different network domains, utilizing the assigned categories. | 04-01-2010 |
20090313627 | TECHNIQUE FOR PERFORMING A SYSTEM SHUTDOWN - Technique for expediting a shutdown process in a computerized system, comprising a number of software modules MUC, a number of functional components and at least one user entity U. A user entity applies requests to a MUC and serves an access provider of the MUC for accessing the functional components. The method performs accelerated shutting down of the software module MUC, by the following steps: initiating shut down of the MUC (by a user entity U); making the MUC software module opaque so as to stop managing of the functional components; shutting down the software module MUC. | 12-17-2009 |
20090274155 | TECHNIQUE FOR PROVIDING INTERCONNECTION BETWEEN COMMUNICATION NETWORKS - Technique for interconnecting a first communication network and a second communication network, for example layer 2 Ethernet networks, which uses a fully or partially redundant dual homing configuration. The configuration includes: at least three network elements where at least two of them are peer elements belonging to the second network, and at least two traffic lines respectively associated with the peer elements and connecting the first and the second networks via the three network elements. The technique comprises establishing a bi-directional signaling between the peer elements and, based on the signaling information, deciding which traffic line should forward the traffic. | 11-05-2009 |
20090074418 | SELF CHECKING OPTICAL ADD DROP MULTIPLEXER - A technique is proposed for performing add/drop operations in an OADM assembly serving an optical network and comprising an add unit and a drop unit. With respect to at least one optical channel assigned to an optical wavelength λ, the OADM assembly is capable of dropping the channel from the network via the drop unit as a first signal, and adding the channel to the network via the add unit as a second signal. According to the technique, the OADM assembly additionally comprises an authentication and control unit ACU for authenticating the at least one optical channel and controlling the OADM assembly. The ACU is authenticates the optical channel by comparing one or more components of the first signal with one or more components of the second signal serving as a reference, and based on the authentication result, makes decisions whether to allow or block the dropping and/or adding of the optical channel. | 03-19-2009 |
20080310840 | Optical Communication Network and Method of Routing in the Network - A network with nodes interconnected by optical fiber links carrying an optical communication channel having a single optical wavelength. In the network, at least two network nodes operate as transmitting nodes generating a first short pulse optical signal at different bit rates; at least one of the other network nodes operates as a receiving node and is designated to receive transmissions from at least one of the transmitting nodes via the optical channel in a form of a second short pulse optical signal. The receiving node is provided with a dispersion compensation module adapted to compensate dispersion created in the optical fiber along the optical channel between a specific transmitting node and the receiving node, thereby ensuring receipt, in a restored form, of data transmitted using the second optical signal and directed to the receiving node. | 12-18-2008 |
20080304500 | Architecture of Gateway Between a Home Network and an External Network - A Home Gateway (HGW) interconnects a Home Network (HN) and an External Network (EN), and is adapted to communicate with the HN and EN at a Network layer. HGW is provided with a Service Application Programming Interface Layer (SAPI Layer) capable of performing, at an Application layer, mediator functions for supporting communication and services between the HN and EN. Devices of the HN are able to communicate with devices of EN via the HGW, and to actualize services via the HGW. | 12-11-2008 |
20080291897 | Access System for the Provisioning of Different Communications Sevices, and Method for Using Same - An access communication system is provided which comprises at least one aggregation device comprising at least one automated switching matrix for connecting a plurality of communication devices with a plurality of subscribers. When a new subscriber is to be connected through the at least one aggregation device, the at least one automated switching matrix is operative to enable the provisioning of a required service to the new subscriber either by using one of these communication devices or by communicating with a communication device installed at a different location and operative to enable the provisioning of the service required by the new subscriber. By a preferred embodiment the at least one aggregation device and automated switching matrix and the plurality of communication devices are managed by a single managing entity. | 11-27-2008 |
20080279550 | Method and System For Measuring Average Q-Factor in Optical Networks - A technique for determining averaged Q-factor, Qavg, for an optical binary signal transmitted at a bit rate X, based on amplitude histogram evaluation and on asynchronous sampling. The technique is inexpensive since it uses sampling pulses, which have bit rate Y lower than X and are not synchronized with the optical signal. The technique proposes conducting N sampling sessions and constructing N respective amplitude histograms for the sessions, wherein an initial session is conducted at a randomly selected initial phase of the sampling pulses, and N−1 sessions are held at different phases shifted in respect of the initial phase. The technique then compares the obtained N amplitude histograms to select there-from the amplitude histogram having the minimal cumulative value of cross-point data. The averaged Q-factor is determined from the selected histogram, with accuracy comparable with that of synchronous methods. | 11-13-2008 |
20080247315 | Flooding of Data Packets in a Switching Telecommunications Device - A technique is described for flooding data packets in a telecommunication switching device comprising a plurality of interface blades. The technique comprises arranging a logical ring by interconnecting a group of interface blades of the telecommunication switching device, wherein the interface blades of the group comprise all leaf ports of the telecommunication device. Upon receiving a packet with un known destination at a particular interface blade of the logical ring, the packet is forwarded along the logical ring using unicast transmission. At each of the interface blades holding at least one leaf port, the packet is fed to at least one leaf port of the interface blade. The technique both ensures that the packet will be received at its destination via any of the leaf ports, and prevents burst flooding in the telecommunication switching device. | 10-09-2008 |
20080219664 | Method and System for Controlling Optical Network - A technique is described for controlling and optical network composed of network elements (NEs), with the aid of a network controller (NC) being in communication with the network elements. The technique includes collecting, by the network controller NC, information on the NEs therefrom, and, whenever a change in the network is requested, simulating within the NC operation of the network with the requested change and based on the collected information. The NC makes a decision on acceptability of the requested change, and may then cause implementation of the requested change in the network. | 09-11-2008 |
20080205890 | Method For Transmitting Lacs Protocol Via an Optical Communication Line - A technique for exchanging LCAS control information between a first network element and a second network element interconnected by a bi-directional optical communication line, while conveying substantially unidirectional data traffic in the form of a virtual concatenated group (VCG) binary stream transmitted in a first direction via the bi-directional optical communication line, the technique comprising: —in the first direction, transmitting the LCAS control information via the bi-directional optical communication line in the VCG binary stream, by placing the information in one or more overhead bytes conventionally specified for the VCG binary stream, —in a second (opposite) direction, transmitting the LCAS control information in an existing binary stream non-related to the above-mentioned unidirectional data traffic; the existing binary stream should pass via a communication trail connecting the first network element and the second network element but not obligatory coinciding with the above-mentioned line; the discussed information should be placed in one or more overhead bytes of the existing binary stream. | 08-28-2008 |
20080205435 | Broadband Communication Network Provided with Media Storage - A Digital Subscriber Line Access Multiplexer (DSLAM) is provided which comprises: a network side interface adapted to receive a plurality of communication signals conveyed along a broadband network: a storage means adapted to receive at least some of the communication signals, associate one or more corresponding priorities therewith, and store their content in accordance with at least one of the associated priorities: multiplexing means operative to retrieve content stored in the storage means and multiplex the content received with run time data received at the network side interface into a multiplexed product while ensuring at least a minimum pre-defined quality of service for the multiplexed product: a subscribers' output interface adapted to receive the multiplexed product from the multiplexing means and forward it along a communication line extending towards a subscriber; and a subscribers' input interface adapted to receive information generated by subscribers. | 08-28-2008 |