Abstract: Method and arrangement for automatically configuring subscriber equipment (En) with a network interface unit (NIU) for adapting to a terminal unit (AFRA-NT) of a digital network (AN), whereby the data rate of this network interface unit (NIU) can be adaptively adjusted.

Abstract: An object of the present invention is to provide a diversity receiver having an excellent anti-multi-path fading characteristic in a further simple structure. A diversity receiver according to the present invention measures a reception level, delay spread and a phase of a burst OFDM modulates signal received by a plurality of antennas. Received signals of arbitrary antennas are combined for synthesization and demodulated in accordance with a result of measurement, thereby obtaining the excellent anti-multi-path fading characteristic.

Abstract: In a synchronous multiplex network including a plurality of multiplex transmission apparatuses, an overhead is passed through intervening multiplex transmission apparatuses such that administration and maintenance operation information is transmitted and received through the overhead between arbitrary multiplex transmission apparatuses. The multiplex transmission apparatus receives a multiplexed signal comprising a payload having a plurality of main signals multiplexed therein and overhead bytes including a plurality of administration and maintenance operation information, performs termination processing for the administration and maintenance operation information and transmission processing for the payload, thereafter converts the multiplexed signal into a different multiplexed signal comprising a payload which has been processed for transmission and a plurality of administration and maintenance operation information, and transmits the different multiplexed signal.

Abstract: A unique trace word is assigned to each incoming signal routed by a sliced switch fabric having two or more parallel switches. The unique trace word is encoded into each incoming signal following an overall format that ensures that each sliced trace word (i.e., the subset of bits in the overall format routed by each parallel switch) also uniquely identifies each incoming signal. In this way, the present invention ensures that the switch configuration of each and every parallel switch can always be verified. As such, any improper switch configuration can be detected, including those misconfigurations in which all but one of the parallel switches are correctly configured as well as those misconfigurations in which all of the parallel switches are identically, but incorrectly configured.

Abstract: A Call Alerting and Control System is provided in a communication environment to allow an Internet user (“user”) approximately real-time monitoring of information about an incoming call from a calling party while maintaining a connection with the Internet. The monitored information can include the calling party's name and telephone number. The system could also allow the user to provide an answering machine-type message to the calling party and the user to listen to the calling party's response to the message while still connected to the Internet. The system can further allow the user to reroute, answer or otherwise treat the incoming call while, at the user's discretion, either maintaining or disconnecting a connection to the Internet.

Abstract: A system and method for providing telephony and high speed data access over a broadband access network, comprising a network interface unit (NIU) coupled to a backup local exchange carrier (LEC) line, the broadband access network coupled to the NIU, an intermediate point-of-presence (IPOP) coupled to the broadband access network, and at least one external access network coupled to the IPOP. The system also provides for a fail-safe mode in which the NIU supports the LEC line for lifeline services.

Abstract: In a communications system comprising a public or other network (170), a wireless network (7), and an Internet Protocol based network (IP network) (100) configured as a transport mechanism between the public or other network (170) through a public network interface (160) and the wireless network (7) through a base station interface (140), a method of controlling signal traffic over multiple IP subnets, the method comprising the steps of gathering traffic data associated with the multiple IP subnets, and analyzing the traffic data to determine which of the multiple IP subnets provides the most appropriate connection for transmitting the data stream between the wireless network and the public or other network for achieving a desired amount of traffic distribution over the multiple IP subnets.

Abstract: To provide a high bit rate link between telecommunication network users, HDSL modems are installed on the user premises and at corresponding subscriber line termination units in an exchange. The modems in the exchange are connected to access units of the exchange which include networks of add and drop multiplexers interconnected in a ring and connected to a drop port. It is shown that it is a simple matter to organize dynamic switching between users connected to the same access unit or neighboring access units in the same exchange. Other calls are routed to other exchanges.

Abstract: An orthogonal code hopping multiple access communication system divides channels according to hopping patterns of the orthogonal codes allotted to the respective channels. The communication system includes a transmitter for modulating input digital signals using an orthogonal code hopping multiple access technique and transmitting the modulated digital signals, and a receiver for receiving the digital signals using the orthogonal code hopping multiple access technique and restoring the digital signals.

Abstract: Systems and methods for providing uninterrupted transfer of voice telephony provided by a first service provider to a derived voice technology over a digital subscriber line provided by a second service provider are disclosed are disclosed. The system generally comprises a first telephone line configured to connect to a first and a second voice switch of the first and second service providers, respectively, having a same assigned telephone number and a derived voice customer premise equipment configured to connect to the first and second telephone lines and to selectively connect a telephone to the second voice switch. The method generally comprises establishing connectivity between a telephone and a first and a second voice switch of the first and second service providers via a first and a second line, respectively, having a same assigned telephone number and selectively connecting the telephone to the second voice switch via a client premise equipment.

Abstract: A bus protocol is checked automatically during design or manufacture by connecting a bus protocol monitor to the bus and monitoring signals applied to the bus. The response to those signals is then compared with a predetermined desired response. A signal is generated to alert the protocol designer or manufacturing controller if there is an improper response that indicates that the protocol is in error. The invention is particularly useful as applied to check an LPC bus protocol.

Abstract: To determine a network communications device type, (switch or router) without reference to internal information within the network communications device, two packets having preselected, differing sizes (e.g., 64 bytes and 1500 bytes) are sequentially transmitted from one network node to another through the network communications device. The difference between the transmission start times for the two packets, determined by time references set up based on internal data processing system high resolution counters and placed in the IP packet payload, and the difference between the receipt stop times—that is, when the last portions of the two packets are received—are compared. If the two differences are substantially the same, the network communications device is classified as a switch. If the two differences are unequal by an appreciable amount, the network communications device is classified as a router.

Abstract: Round trip time, bottleneck link speed, and hop count information from one node to the remaining nodes within a network is collected and processed by an adaptive resonance theory (ART) neural network to classify the nodes by physical location or site group. For each site group, round trip time from one node to the remaining nodes is then collected and processed utilizing an ART neural network to classify the nodes into one or more physical groups. The resulting breakdown of site groups within the network and physical groups within the site groups forms a model which may be employed by networking and system management applications. No private or proprietary vendor specific information from communications devices within the network need be employed to develop the model, only publicly available information regarding communications parameters.

Abstract: A method for transmitting command and control information between at least two nodes of an IEEE 1394 based home entertainment network, includes dynamically generating a node navigation tree, transmitting the node navigation tree to a video display unit, receiving a node navigation input identifying a particular node in the node navigation tree, modifying a subset of the node navigation tree based on the node navigation input, transmitting the modified subset of the node navigation tree to the video display unit, generating a node function list including one or more functions pertaining to the identified node, transmitting the node function list to the video display unit, receiving a node function input corresponding to a particular node function in the node function list, and transmitting a command to the identified node based on the node function input.

Abstract: An apparatus and method for storage of memory packets with a high aggregate bandwidth is disclosed. An odd-even memory bank structure effectively doubles the memory available for packet storage. A packet memory arbitration scheme aligns access of devices reading and writing into packet memory allowing full-rate access to the packet memory.

Abstract: An apparatus which depends on one of a plurality of master clocks as a timing source includes a timing-dependency-direction-identifier-extraction unit which detects an identifier indicative of a direction of timing dependency from a received signal with respect to each of the master clocks, a timing-quality-information-extraction unit which detects a code indicative of a timing quality from the received signal with respect to each of the master clocks, and a synchronization unit which selects the timing source based on the code indicative of a timing quality, and identifies a direction of timing dependency of the timing source based on the identifier indicative of a direction of timing dependency.

Abstract: An integrated communication system includes a CDMA network and other network such as a private cordless phone network which operates under a communication protocol different from that of the CDMA network. The CDMA network receives a GPS time signal from a GPS satellite and transmits a GPS-synchronization signal in synchronism with the GPS time signal. When a cellular phone receives an output request signal such as a position registration request signal from the other network, it transmits an output signal such as a position registration signal to the other network at a time synchronized with the GPS-synchronization signal. The other communication network responsively corrects a time of synchronization of its operation time based on the received output signal.

Abstract: A communication method in an orthogonal frequency division multiplexing modulation communication system includes a transmission apparatus in which a frequency bandwidth of a signal modulated in accordance with an orthogonal frequency division multiplexing modulation system is changed and the modulated signal is transmitted and a receiving apparatus in which the modulated signal is received and a frequency bandwidth for demodulation of the received signal is changed to follow the change of the frequency bandwidth of the modulated signal.

Abstract: Disclosed is a system and method for determining an efficient and accurate committed information rate (CIR) for a frame relay data communications device to facilitate the conversion of frame relay data packets into asynchronous transfer mode (ATM) data cells. In one embodiment, the present system includes a processor coupled to a local interface, a memory coupled to the local interface, an adaptive CIR logic stored in the memory, the adaptive CIR logic being executed by the processor, the adaptive CIR logic including: sample identification logic to identify at least one sample group of a number of data packets transmitted across a data communications link, the data packets having a variable length and the data cells having a fixed length, modeling logic to adapt a modeled packet size of the frame relay data packets transmitted across the data communications link based upon the data packets in the sample group, and, logic to calculate an efficient committed information rate based upon the modeled packet size.

Abstract: A device for supporting a plurality of media conferences includes digital signal processors (DSPs) and a system resource management (SRM) module coupled to the DSPs. Each DSP receives input data packets from conference participants and processes the input data packets to generate output data packets. Each DSP determines whether the media conference is set to an active mode and communicates the output data packets to the conference participants in response to determining that the media conference is set to the active mode. The SRM module allocates a media conference to a first DSP and a second DSP and sets the media conference to the active mode in the first DSP and a stand-by mode in the second DSP. The first DSP communicates output data packets associated with the media conference in response to the SRM module setting the media conference to the active mode in the first DSP.