Abstract: One embodiment of the present invention includes a communication network comprises a communication cable having a first wire pair and a second wire pair that both extend between a first end and a second end of the communication cable. The network also comprises at least one power source configured to provide a first supply current through the first wire pair and a second supply current through the second wire pair at the first end of the communication cable. The first supply current and the second supply current can be substantially equal. The network also comprises a first diode bridge and a second diode bridge coupled to the second end of the communication cable and configured to combine the first and second supply currents to provide a combined supply current. The network further comprises a powered device configured to receive the combined supply current.

Abstract: A method performed by a device adapted for communication over a network includes establishing a presence on the network, obtaining default configuration information for the device via the network, the default configuration information identifying a service on the network, receiving a request for validation information from the service, providing the validation information to the service, the service generating device-specific information in response to the validation information, and obtaining the device-specific information.

Abstract: A packet transmission device includes a receiver which receives an encapsulated packet obtained by adding a header to a packet which includes a user signal; a memory which stores an address of a transmission source of the user signal stored in the encapsulated packet with respect to an identifier that identifies a type of the user signal included in the header; a processor which controls a band, through which the encapsulated packet passes, based on a value obtained by multiplying a number of addresses of the transmission source stored in the memory with respect to the identifier by a guarantee band allocated for the identifier; and a transmitter which transmits the encapsulated packet to a first network based on the control by the processor.

Abstract: A first fiber channel over Ethernet (FCoE) data forwarder (FDF), comprising a memory coupled to a processor, wherein the memory comprises instructions that cause the processor to receive a base forwarding table from an FCoE controller and manager (FCM), wherein the FDF comprise a plurality of ports, and wherein the first FDF uses the base forwarding table to determine which of the ports to send a first FCoE data frame comprising fiber channel (FC) data, receive a second FCoE data frame comprising a media access control (MAC) address, a port identifier, and FC data, and update the base forwarding table using the MAC address and the port identifier.

Abstract: The invention is a transaction interface protocol wherein the interface protocol has a transaction identifier signal in each of the request and response channels. It is used between a target network interface unit (NIU) master and an initiator NIU slave that are directly connected through a transaction interface. The target NIU response channel uses the transaction ID signal to identify the entry in a context array associated with the corresponding request. The coupling of target NIU and initiator NIU enable the formation of an on-chip interconnect comprising multiple network-on-chip (NoCs) wherein the topology of the interconnect is simpler, smaller, faster, and has lower latency.

Abstract: A communication device and a method concerning the operation of a communication device is provided. The method may include integrating a device control protocol into a point-to-point-protocol (PPP) frame, such that the integrated device control protocol can be separated by means of an identifier. Also, a logic channel between an application layer and a physical layer of the communication device is provided via the integrated device control protocol. At least one virtual serial interface may be provided within the communication device that is configured to use a device control protocol integrated into the PPP frame. The virtual serial interface includes at least one logic channel for an access of applications in an application layer to units of a physical layer of the communication device.

Abstract: A system and method for switching between voice signals. The system includes a network interface device and a digital logic device. The network interface device may include a splitter and a switch. The splitter includes a network input configured to receive a combined voice and digital signal. The splitter generates a separate first voice output and a digital signal. The first voice signal is provided from the splitter to the switch, while the digital signal is provided to the digital logic device. The digital logic device is configured to generate a second voice signal that is also provided to the switch. Further, the digital logic device provides a control signal to the switch. The control signal manipulates the switch to selectively provide either the first or second voice signal to a voice output.

Abstract: A software architecture providing ad hoc wireless networking capabilities. The software architecture may be compatible with wireless devices, such as UWB devices operating according to the WLP communication protocol. The software architecture may include user mode and kernel mode modules, and may include a multiplexing driver framework to enable system connection to multiple ad hoc networks.

Abstract: Provided are a method and system for a module for a cable modem termination system. The module includes a digital modulator configured to block up-convert a plurality of digital channels and a digital to analog converter coupled, at least indirectly, to an output of the digital modulator to convert the digital channels to an analog format.

Abstract: A wireless node device receives data island packets from an HDMI device with a time cycle, and prohibits wireless transmission of a data island notification message when a video output format and an audio output format included in the data island packet are the same as a video output format and an audio output format included in the data island packet, respectively.

Abstract: A network interface adapter includes a network interface and a client interface, for coupling to a client device so as to receive from the client device work requests to send messages over the network using a plurality of transport service instances. Message processing circuitry, coupled between the network interface and the client interface, includes an execution unit, which generates the messages in response to the work requests and passes the messages to the network interface to be sent over the network. A memory stores records of the messages that have been generated by the execution unit in respective lists according to the transport service instances with which the messages are associated. A completion unit receives the records from the memory and, responsive thereto, reports to the client device upon completion of the messages.

Abstract: A method and apparatus for integrating a Voice over Internet Protocol (VoIP) client in a wireless PC card are disclosed. A soft mobile phone client is combined with a cellular PC card to create a single physical device that is capable of providing VoIP services to a computer user through the cellular capabilities of the device itself, or alternatively, through any other Internet connectivity available to the computer. When a user inserts the VoIP client/Cellular PC Card into a computer, a graphical user interface (GUI) within the connection manager software is launched allowing the user to communicate VoIP function commands to the VoIP client. A check for Internet connectivity may be performed, at which time the Radio portion of the enhanced PC card may be put into an idle state if connectivity is detected, or may alternatively establish Internet connectivity through the cellular portion of the enhanced PC card.

Abstract: In a communication system in which a server apparatus on the Internet is connected to at least one client apparatus on an intranet via a firewall, the client apparatus comprises: acquisition means for acquiring, from the server apparatus, information associated with a transmission interval at which notifications are periodically transmitted to maintain the connection to the server; and management means for maintaining the connection by periodically transmitting the notifications based on the information associated with the acquired transmission interval, and the server apparatus comprises: decision means for deciding an interval, in which the connection in the push communication can be maintained in non-communication, based on the communication status information; and notification means for notifying the client apparatus of the decided interval as information associated with the transmission interval used to maintain the connection in the push communication.

Abstract: The dynamic probability admission control policy for distributed video provides a method that decides in a Video on Demand (VOD) system which content requests can be admitted and which requests should be rejected to maintain Quality of Service (QoS). Requests for popular and expensive movies should not be rejected on the behalf of unpopular movies to generate more revenue. The dynamic probability admission control policy combines a shared resource admission control and a class-based admission control. Moreover, dynamic probability is used to access shared resources, such as ports and bandwidth. A nonlinear dynamic probability function is used for allocation of ports/bandwidth. The dynamic probability admission control policy improves performance of all the request classes, as well as overall system performance.

Abstract: A network for carrying out control, sensing and data communications, composed of a plurality of nodes. Each node may be connected to a payload, which includes sensors, actuators and DTE's. The network is formed using a plurality of independent communication links, each based on electrically-conducting communication media composed of at least two conductors and interconnecting two nodes, in a point-to-point configuration. During network operation, nodes can be dynamically configured as either data-generating nodes, wherein data is generated and transmitted into the network, or as receiver/repeater/router nodes, wherein received data is repeated from a receiver port to all output ports.

Abstract: There is provided a node device having a plurality of transmission lines, included in a network, the node device including a first clock extracting section configured to extract a clock from a first packet used for synchronization of a clock in the node device, the first packet being received from the network through the transmission line, a second clock extracting section configured to extract a clock from a signal received from the network through the transmission line, and a clock selector to select a clock out of the clock extracted by the first clock extracting section and the clock extracted by the second clock extracting section, wherein the clock selected by the clock selector is used for synchronization of a clock in the node device.

Abstract: The invention provides for a system, method, and device for using the existing copper loop plant of twisted pair wiring for data communication by using a plurality of pairs in a cable bundle of twisted pair for the downstream data direction simultaneously, as if the plurality of twisted pair in the cable bundle were a broadcast medium. Between an individual subscriber's access pair and the cable bundle, an aggregation device is used to combine all received signals from the plurality of twisted pairs in the cable bundle and to make the entire downstream bandwidth of the plurality of pairs available to the subscriber.

Abstract: The Real-time Transport Protocol (RTP) and its related standards define a retransmission packet format and a way to give feedback via Negative ACKnowledge (NACK) packets for data that has been lost. In one embodiment, a unicast RTP repair session is associated with a main Source Specific Multicast (SSM) multicast session. Real-time Transport Control Protocol (RTCP) NACK packets are then used for feedback to a SSM feedback target address. This dynamically instantiates unicast RTP repair for multicast sessions. The repair scheme can be used for repairing multicast channels or joining new multicast channels. In another embodiment, a media transmission device shares an IP address with one or more other media transmission devices. The shared IP address can also be used to route multiple identical multicast media streams to different media stream receivers.

Abstract: Quality of Service (QoS) and/or bandwidth allocation can be provided for interactive gaming via a Regional/Access Network (RAN). The RAN can provide end-to-end transport between a Gaming Application Service Provider (GASP) and a Customer Premises Network (CPN) that includes a Routing Gateway (RG). Quality of Service (QoS) and/or bandwidth allocation can be provided by determining different levels of subscription service for different subscribers to an interactive game between a plurality of participants. Different QoS and/or bandwidth allocations can be provided to different gaming traffic flows associated with the different subscribers to the interactive game based on the different levels of subscription service of the different subscribers.

Abstract: Systems and/or methods that facilitate descrambling of data communicated between a memory and a host processor are presented. A descrambler component determines the bit order of data signals from a memory device based on pattern information provided to the descrambler component by the memory device during initialization. The descrambler component can receive one or more distinct patterns and can evaluate the data values associated with such patterns for each data line of the memory. The descrambler component can determine the bit order of the data signals based on such patterns and can generate a transformation function that can facilitate rearranging data, which can be received from or sent to the memory device, into a predetermined bit order.

Abstract: When multiple SDH/SONET frame are accumulated and then lower-order path information removed from multiple frames is multiplexed into the same packet to achieve better transmission efficiency during packetization, the delay for accumulating increases. Disclosed is a transmission device that packetizes an SDH/SONET lower-order path with timing which is an integer factor of 1 cycle of the SDH frame. In this case, the destination loads the same multiple lower-order path in one packet. The result is that delay time accompanying lower-order path packetization is kept to less than the time of 1 cycle of the SDH frame, and the efficiency with which lower-order paths are accommodated in packets is further increased. The result is that improved transmission efficiency is realized.

Abstract: A method for symmetric receive-side scaling (RSS) in a network device having an ingress side RRS router and an egress side RSS router and a plurality of queues for handling packets. The method comprises identifying an internet protocol (IP) version being used for the network. The transport layer headers (TLHs) existence status is identified. A secret key by each of the egress side RSS router and the ingress side RSS router is identified. The key is based on the identification of the IP version and the TLHs existence status. The secret key ensures that packets sent from a source to a destination and packets sent from the destination to the source are routed by the egress side RSS router and the ingress side RSS router to a common queue among the plurality of queues. The secret key is stored at a storage in the network device. The secret key is used by the ingress side RSS router and the egress side RSS router for routing packets.

Abstract: A Distributed Denial of Service (DDoS) attack detection and defense apparatus and method are provided. The Distributed Denial of Service (DDoS) attack detection and defense apparatus includes: a flow information collection unit to collect, from one or more input packets with an IP address of an attack target system as a destination IP address, flow information including source IP addresses of the input packets and packet counts of one or more flows that are classified for each of the source IP addresses and each of different protocol types; an inspection unit to calculate packets per second (PPS) values of the flows based on the packet counts; and a response unit to determine a DDoS attack response method for each of the flows based on the PPS value and the protocol type of a corresponding flow and to process the corresponding flow using the determined DDoS attack response method.

Abstract: An apparatus for providing multi-cell support in a telecommunications network is described. The apparatus includes a modem board and a multi-core processor having a plurality of processor cores attached to the modem board. A single partition is defined with all of the processor cores included in it. The single partition is used to execute all control plane functions and all data plane functions. Typically, the multi-core processor is configured to include a core abstraction layer that hides any core specific details from application software running on the processor cores in the single partition and to serve at least three cells in the telecommunications network, each cell having a corresponding uplink scheduler and a corresponding downlink scheduler. In this configuration there is no need to use a hypervisor, since there is only one OS instance running (a potential cost saving).

Abstract: One embodiment is directed to a wall plate device including one or more jacks. Each jack includes a rear attachment point configured to couple to one or more communication paths in a semi-permanent manner. Each jack also includes a front attachment point configured to mate with a connector of a corresponding physical communication media, and to couple such physical communication media to the rear attachment point. Each jack also includes a media reading interface configured to interface with a PLM interface of a connector connected to the front attachment point. The wall plate device also includes a programmable processor coupled to each of the media reading interfaces and configured to access a storage device of a connector connected to the front attachment point through the media reading interface to obtain PLM information. The programmable processor is configured to communicate the PLM information to another device.

Abstract: Provided is a transmitting and receiving system and method in which a transmitting and receiving device mounted on an operation system unit can process a signal received from an equipment connected to a standby system unit and a signal to be transmitted to the equipment connected to the standby system unit. A data signal and a control signal to be transmitted to a receiving device of the operation system unit are multiplexed by a parallel/serial conversion using a multiplexer. The signals are transmitted to the operation system unit as a serial received signal. The signal is demultiplexed by a serial/parallel conversion using a demultiplexer of the operation system unit. Further, a data signal and a control signal to be transmitted to the equipment connected to the standby system unit are multiplexed by a parallel/serial conversion using a multiplexer. The signals are transmitted from the operation system unit to the standby system unit as a serial signal to be transmitted.

Abstract: A femtocell to allow a user terminal device access to the Internet includes a tunnel communication module to establish a secure tunnel between the user terminal device and the Internet and a network address translator to translate network address for the user terminal device. The femtocell selects the network address translator to allow the user terminal device access to the Internet upon the condition that the user terminal device requires a video streaming service. The femtocell further selects the network address translator or the tunnel communication module according to a speed of the user terminal device accessing the Internet upon the condition that the user terminal device requires a web service.

Abstract: In one embodiment, a method comprising receiving plural packets; and adaptively adjusting a pushtimer timeout value, packet aggregation threshold, or a combination of both based on a change in filtered rate of the received plural packets.

Abstract: A terminal for use in a voice communications system includes a base station and at least one handset arranged to communicate wirelessly with the base station. The base station includes a first interface to a packet data network and a second interface to a public switched telephone network, the base station being arranged to selectively establish a packet data call from the first interface and a public switched telephone call from the second interface.

Abstract: A method, apparatus and computer program product for maintaining port state tables in a forwarding plane of a network element are presented. The state of a first set of ports associated with a first Forwarding Data Unit (FDU) are periodically determined, the first FDU being one of a plurality of FDUs. The determined state is used to update a first port state table of the port state database associated with the first FDU. The determined state is transmitted to each other FDUs on the network element to enable each of the other FDUs to store the state of the first set of ports in a port state database local to each of the other FDUs. The port state database is used by the forwarding plane to perform fast reroute of packets.

Abstract: An interconnect block for a data processing apparatus, said interconnect block being operable to provide data routes via which one or more initiator devices may access one or more recipient devices, said interconnect block comprising: a first and a second portion; said first portion comprising at least one initiator port for communicating with one of said initiator devices, and at least one recipient port for communicating with one of said recipient devices; said second portion comprising at least two recipient ports for communicating with at least two recipient devices, said second portion being connected to said first portion via at least two parallel connecting routes, said at least two recipient ports being connectable to said at least two parallel connecting routes; wherein in response to a request received from one of said initiator devices at said first portion to perform a transaction accessing one of said at least two recipients in communication with said second portion, said interconnect block is op

Abstract: A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. The first node having the display device determines the second node to be the master in accordance with a user selection, and transmits a connection command of a predetermined format for transmitting a data stream to the second node. The second node determined as the master in accordance with the transmitted connection command of the predetermined format is allocated with a channel and a bandwidth from an isochronous resource manager (IRM), and performs a point-to-point connection between the second node and the first node to transit the data stream. Thus, the transmission/reception, reproduction, and control of the data stream of the program can be smoothly performed.

Abstract: A method begins by a processing module obtaining a set of encoded data slices for transmission to a receiving entity via a network, wherein the set of encoded data slices represents data that has been dispersed storage error encoded. The method continues with the processing module dividing the set into a plurality of sub-sets of encoded data slices in accordance with an error coding distributed routing protocol. The method continues with the processing module determining a plurality of routing paths within the network in accordance with the error coding distributed routing protocol. The method continues with the processing module transmitting the plurality of sub-sets of encoded data slices via the plurality of routing paths to the receiving entity in accordance with the error coding distributed routing protocol.

Abstract: Systems and method to provide bundled services through a communication device. A particular method may include determining a first bundle of services to offer a user of an end user communication device, where the first bundle of services has a total bandwidth consumption rate computed based on stored bandwidth consumption rates corresponding to services within the first bundle of services. The total bandwidth consumption rate is less than a predicted bandwidth capacity. The particular method may also include comparing a predicted bandwidth capacity to measured bandwidth statistics to identify an additional bandwidth capacity of a set of transport facilities and determining a first additional service to offer a user of the end user communication device to utilize the additional bandwidth capacity.

Abstract: A method for mobile computer networking on a distributed network includes, with a network element of a local network, establishing a connection to a mobile client device, determining a home network of the mobile client device without using a logical address of a packet of data from the mobile client device, and forwarding network traffic from the mobile client device to a home network of the mobile client device in response to determining that the home network is not the local network.

Abstract: A transmission apparatus operation method for optimizing a virtual private network operates by defragmenting and de-duplicating transfer of variable sized blocks. A large data object is converted to a plurality of data paragraphs by a fingerprinting method. Each data paragraph is cached and hashed. The hashes are transmitted to at least one satellite apparatus. Only data paragraphs which were not previously cached at each satellite are transferred.

Abstract: A device for connecting to a two-wire communications bus, a bus station that, while utilizing the device, is able to send messages, represented on the bus lines as dominant and recessive bus levels, to additional connected bus stations and receive same from them. The device includes (a) an arrangement setting a dominant bus level in the form of a first voltage difference between the two bus lines by driving a first electric current, and the device is suitable for the recessive bus level to set in as the second voltage difference between the two bus lines, at least partially by the flowing of a discharge current via terminating resistors connected to the bus lines; and (b) an arrangement to speed up the setting of at least one of the bus levels by driving at least one additional electric current, at least in response to the presence of a switching condition.

Abstract: The invention relates to an interfacing device for transmission through interconnections used for sending a plurality of electrical signals. The interfacing device of the invention comprises signal terminals and a common terminal. A transmitting circuit receives the input signals of the transmitting circuit coming from a source. The output of the transmitting circuit delivers, when the transmitting circuit is in the activated state, voltages between one of the signal terminals and the reference terminal (ground). A receiving circuit delivers, when the receiving circuit is in the activated state, output signals of the receiving circuit determined each by the voltage between one of the signal terminals and the common terminal, to the destination. In the closed state, the common terminal switching circuit is, for the common terminal, equivalent to a voltage source delivering a constant voltage, connected in series with a passive two-terminal circuit element presenting a low impedance.

Abstract: A packet network device includes a packet network processor memory system for storing information used to process and forward packets of information in and through the network device. The information is included in look-up tables whose entries can be mapped either horizontally or vertically into the memory system. In the event that the entries are mapped horizontally, a complete entry can be access at a single memory location and in the event that the entries are mapped vertically, the entries can be accessed at one or more memory locations.

Abstract: A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. The first node having the display device determines the second node to be the master in accordance with a user selection, and transmits a connection command of a predetermined format for transmitting a data stream to the second node. The second node determined as the master in accordance with the transmitted connection command of the predetermined format is allocated with a channel and a bandwidth from an isochronous resource manager (IRM), and performs a point-to-point connection between the second node and the first node to transit the data stream. Thus, the transmission/reception, reproduction, and control of the data stream of the program can be smoothly performed.

Abstract: A transmission apparatus exercises insertion control for inserting a client signal and a stuff byte into a payload area in a frame into which the client signal is to be mapped, and sends the frame after the insertion control. In addition, the transmission apparatus inserts the client signal or the stuff byte in columns of the frame into the payload area except a leading column.

Abstract: The present invention provides a method for inheriting an attribute of a FA in a multilayer network, which comprises: returning information of a first attribute of each link on a FA LSP in a path computation reply message to an upper layer head node, and initiating connection setup; a head node on the FA LSP constructing the first attribute of this FA according to information of the first attribute of each link on the FA LSP included in a path message sent from a upstream node and storing the first attribute of this FA, and sending information of the first attribute of this FA to a downstream node; and c) the tail node on the FA LSP obtaining information of the first attribute of this FA and storing the first attribute of this FA. The present invention also provides a multilayer network.

Abstract: Multicast information contained in a request from an IP TV set top box for video content to an IGMP manager is passed to an SA processor to perform a lookup of an SA table. A result of the lookup is the frequency of the downstream legacy channel over which the requested content is being delivered from an edge QAM device. The SA processor instructs a legacy QAM tuner to tune the determined frequency. The IGMP manager selects packets corresponding to the request content based on a program identifier that is associated with the multicast address in the SA table. As selected packets are received by the IGMP manager, multicast address information is placed into them, and they are passed on from the manager to the IP TV set top box. The IP TV set top box receives the requested content packets based on the multicast address.

Abstract: An interface includes three sub-interfaces. A first and second sub-interface receive first/second inbound IQ data streams, respectively, packetize the first/second inbound IQ data streams to obtain first/second inbound IQ data packets, respectively, and transmit the first/second inbound IQ data packets to the baseband processor via a first/second set of RX lanes, respectively. Each first/second inbound IQ data packet comprises a data packet identifier out of a common set of possible data packet identifiers. A third sub-interface receives outbound IQ data packets from the baseband processor via a TX lane, and depacketizes the outbound IQ data packets to obtain an outbound IQ data stream. The third sub-interface receives an RX not-acknowledge signal via the TX lane that identifies a defective first or second inbound IQ data packet within the first/second inbound IQ data packets.

Abstract: A network device configured to allow the connection of the network device to a network in a daisy chain configuration using a single cable. The network device is connected to a cable with two conductors by a socket that is adapted to receive a plug connected to the end of the cable. When the plug on the end of a cable is inserted into the socket, a first conductor in the cable is connected to an input port of a network component and a second conductor of the cable is connected to an output port of a network component. A signal from the network is transmitted down a first conductor in a cable to a network device and the signal is then transmitted back from the network device down a second conductor in the same cable.

Abstract: A network for carrying out control, sensing and data communications, composed of a plurality of nodes. Each node may be connected to a payload, which includes sensors, actuators and DTE's. The network is formed using a plurality of independent communication links, each based on electrically-conducting communication media composed of at least two conductors and interconnecting two nodes, in a point-to-point configuration. During network operation, nodes can be dynamically configured as either data-generating nodes, wherein data is generated and transmitted into the network, or as receiver/repeater/router nodes, wherein received data is repeated from a receiver port to all output ports.

Abstract: A host Ethernet adapter (HEA) and method of managing network communications is provided. The HEA includes a host interface configured for communication with a multi-core processor over a processor bus. The host interface comprises a receive processing element including a receive processor, a receive buffer and a scheduler for dispatching packets from the receive buffer to the receive processor; a send processing element including a send processor and a send buffer; and a completion queue scheduler (CQS) for dispatching completion queue elements (CQE) from the head of the completion queue (CQ) to threads of the multi-core processor in a network node mode.

Abstract: Methods and apparatus to provide a virtual network interface. In an aspect, a method includes receiving a request to access content on a Non-IP network, wherein the request comprises an IP address and a quality of service (QoS) profile associated with the content, mapping the IP address and the QoS profile into a Non-IP network content identifier, and obtaining the content from the Non-IP network based on the Non-IP network content identifier. In an aspect, an apparatus includes an application interface configured to receive a request to access content on a Non-IP network, wherein the request comprises an IP address and a QoS profile associated with the content, mapping logic configured to map the IP address and the QoS profile into a Non-IP network content identifier, and processing logic configured to obtain the content from the Non-IP network based on the Non-IP network content identifier.

Abstract: A switch includes a first IC and a second IC. The first IC includes a first set of (N+1) serializer/deserializer (SERDES) modules communicating with a first set of (N+1) SERDES modules of a switch IC; a first set of N SERDES modules communicating with a first set of N ports; and a first set of N multiplexer modules communicating with (i) the first set of N SERDES modules and (ii) the first set of (N+1) SERDES modules of the first IC. The second IC includes a second set of (N+1) SERDES modules communicating with a second set of (N+1) SERDES modules of the switch IC; a second set of N SERDES modules communicating with a second set of N ports; and a second set of N multiplexer modules communicating with (i) the second set of N SERDES modules and (ii) the second set of (N+1) SERDES modules of the second IC.

Abstract: A system and method for discovering channel impediments for Power over Ethernet (PoE) applications. Cabling power loss in PoE applications is related to the resistance of the cable itself. A PHY can be designed to measure electrical characteristics (e.g., insertion loss, cross talk, length, discontinuities, etc.) of the Ethernet cable to enable determination of the cable resistance. The determined resistance can be used in powering decisions and in adjusting power budgets allocated to power source equipment ports.