Abstract: A modular Cable Modem Termination System (CMTS) includes a packet shelf operating a Data Over Cable Service Interface Specifications (DOCSIS) Media Access Control (MAC) framer. One or more downstream Physical Interface (PHY) shelves receive DOCSIS data from the packet shelf over a packet switched network and modulate the DOCSIS data for sending on a downstream path of a cable plant. One or more upstream PHY shelves send DOCSIS data received from an upstream path of the cable plant over the packet switched network to the packet shelf. By separating the PHY components from the MAC and from the system software, the PHY components for a Hybrid Fiber Coax (HFC) plant may be replaced with different PHY components for other access technologies such as wireless, Digital Subscriber Lines (DSL), Ethernet-to-the-Home, Fiber-to-the-Home, or fiber Passive Optical Networks (PONs).

Abstract: A backbone network, comprising a first switch comprising a first port configured to communicate a data stream via an Ethernet interface, and a second port configured to communicate the data stream via a SONET/SDH interface, and a second switch comprising a third port configured to receive the data stream from the first switch via the Ethernet interface, wherein the first switch and the second switch are synchronized.

Abstract: A system and method for conveying supervisory signaling and power over the same twisted wire pairs in a cable as are used to carry data communications in accordance with a predetermined communications protocol. Supervisory signals having first and second differential components are generated. The first component is coupled to both wires of one of the twisted wire pairs as a common mode signal and the second component of the supervisory signal is coupled to both wires of another twisted pair as a common mode signal. The first and second components are recovered at the remote end of the cable. Physical interfaces are AC coupled to the respective twisted pairs at both ends of the cable and positive and negative voltage rails powered by a power sourcing device are coupled to predetermined twisted pairs to convey a DC voltage over the cable which may be used to power a remote electronic device.

Abstract: Methods and systems are disclosed to enable users of mobile devices to have an easy out of the box experience. In some examples, during the initial powering on of a mobile device, subsequent powering on of the mobile device, or at user direction, the device queries a user about connecting to an alternate wireless access network supported by the mobile device and upon receiving an indication from the user of the mobile device to proceed with the connection to the alternate wireless access network, connects the mobile device to an alternate wireless access network.

Abstract: A distributed CMTS includes a head end, a downstream transmitter hub, and an upstream receiver hub. The head end transmits data packets to the downstream transmitter via a coupling packet data network. Each data packet is marked with a “measured delay” Quality of Service (QOS) and includes a time stamp that is based upon a clock of the head end and a delay tag. The downstream transmitter hub receives the plurality of data, adjusts the time stamps based upon the delay tags, smoothes the time stamps of the plurality of data packets and, based upon the smoothed time stamps, synchronizes its clock with the clock of the head end. The downstream transmitter hub then synchronizes a clock of the upstream receiver hub with the clock of the downstream transmitter hub. The upstream receiver hub may synchronize its clock to the clock of the head end using this technique.

Abstract: A telecommunications system comprises a terrestrial repeater (TR) telecommunication network, a satellite positioning network (CS) which delivers signals containing navigation data, and mobile communication terminals (UE) comprising reception and calculation means (DPS) which can determine the respective positions thereof from said signals, and the navigation data that they contain, in addition to communication means (RH) which can receive communication data frames from the telecommunication network. The communication network integrates additional navigation data in chose locations of some of the data frames in order to create increased data frames.

Abstract: An interface enables an RF signal, a DC power signal, and a data signal to be conveyed between two devices over a single RF cable. In an exemplary application of this invention, a steerable antenna system is coupled to a wireless adapter for use in a wireless network. The steerable antenna includes a plurality of panels that can be selectively activated in response to the data signal, which also determines a direction in which an RF signal is transmitted or received by a selected panel of the antenna. Low pass filters in each device isolate the DC power supply and the load from the other two signals. High pass filters isolate the radio in the wireless adapter and the antenna array from the DC and data signals. The data signal is preferably encoded into a Manchester format that passes through a bandpass filter provided in each device.

Abstract: A distribution network for coupling wireless signals between an internetworking device and a plurality of remotely located access points to provide wireless service within a geographic coverage area composed of microcells. The distribution network makes use of available transport cabling. Examples of such wireless signals include wireless metropolitan area network signals and mobile broadband wireless network signals.

Abstract: One embodiment of the present invention uses an abbreviated blanking period, in comparison to the standard VESA and CEA-EIA blanking periods, in order to send data, including low bandwidth, non-timing information, over one or more channels of the digital video link. By shortening the blanking period, the amount of time available for sending data in each scan line is increased, enabling the system to send more data over each channel. The inactive video portion of a scan line sent during vertical sync may also be used to send additional digital data. Shortening the blanking periods and/or using the inactive video sections of the horizontal scan lines adds to the overall data capacity of the link and may be used to send other digital data, such as multi-channel audio, video, control, timing, closed captioning or other digital data.

Abstract: A method and apparatus for supporting a variety of service types in a CDMA2000 1xEV-DO mobile telecommunication system for high-speed data service in a radio communication environment. To receive multiple services according to a plurality of service types, an AT establishes a connection for the data service with a PDSN and configures a session for setting the plurality of service types having different traffic characteristics by the connection. The AT generates a plurality of service instances for the different service types according to the session configuration. It then exchanges data streams with the PDSN in a service instance corresponding to a currently provided service among the plurality of service instances.

Abstract: A control program for a co-processor in a video-on-demand system directs the co-processor to perform the steps of: a) obtain a transmission control list, from an external source, which identifies a group of several video data packets and a respective subgroup of internet protocol headers for each video data packet in the group; b) partition into pieces, each video data packet and its respective subgroup of internet protocol headers as identified by the transmission control list; and, c) send the partitioned pieces, along with an additional header for each piece, to an output port during a series of spaced apart time intervals.

Abstract: A method and system that enables aggregation and management of services and contents on multiple networks, is provided. In one implementation, such a method and system functionally bridges a first network and a second network such that services and contents, no matter where they come from, can be delivered to a user on one or more devices in the second network. The services and contents in the first network are converted by certain applications to behave as if they exist in the second network, so that they can be accessed by one or more devices in the second network. Such a method and system enables applications to be easily developed and distributed over the Internet using popular Web browsers as the platform for application runtime environments.

Abstract: The present invention provides a CDMA receiving apparatus capable of corresponding to the service types of data and system conditions flexibly and efficiently, so as to achieve such processing for electric power control, diversity control and the like, requested to have real-time property. A CDMA signal inputted into a memory is searched by searcher units of each reception processing block. Voice data and low-speed data are demodulated immediately by a finger unit for data field and a finger unit for control field, and combined by RAKE-combining units. Data fields of packet data and high-speed data are accumulated in memories for data field and demodulated by finger units for data field successively based on path information stored in memories for path information.

Abstract: A simple network comprises of: xDSL service equipment located at a distribution center coupled to an Aggregator Separator (AGSEP) System located at a DC; AGSEP system at the DC is coupled, using a high-speed link, to another AGSEP system located at a remote site, which is coupled to subscriber equipment using drop cables. The AGSEP systems aggregate the xDSL signals originating at either DC xDSL equipment or subscriber equipment, are carried over the high-speed link. The AGSEP systems and separate the aggregated signals at either end to distribute the separated signal to the respective equipment.

Abstract: The present invention is for a high quality digital FM radio system that utilizes the subcarrier band to generate digital audio signals. The hybrid FM radio system utilizes the subcarrier band to transmit the digital FM signals that are synchronized to the analog FM signals. The receiver processes both the analog and digital signals and a high quality FM signal results. The receiver may switch between the traditional analog signal and the higher quality digital signal automatically to present the best possible audio to the user.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. The present system used point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements. A tree-and-branch network architecture is therefore established in which each intelligent network element is assigned a routing ID employed in the point-to-point transmissions while leaving legacy analog signals unimpeded. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth.

Abstract: New firmware is attached to electronic mail from a computer of the service center to be transmitted towards a monitor device at the user side. The monitor device of the user side reads out the electronic mail from a mail server and downloads the electronic mail into its own apparatus. Then, the firmware is derived from the electronic mail and transmitted to an image formation apparatus that is the subject of transmission. The image formation apparatus receiving the firmware writes the new firmware into the flash ROM that is the subject of rewriting. Accordingly, increase of the communication traffic can be prevented and the load on the mail server can be alleviated in the case where the same firmware for a plurality of devices connected on a network is to be altered using an electronic mail system.

Abstract: Telecommunication system for bidirectional transmission of data and voice signals with a data network (2), which is connected via a satellite data transmission link (6, 5, 8) for bidirectional data signal transmission to at least one satellite device (7), which is connected to a 10 Base S switching device (14); a telephone network (25), which is connected via a number of subscriber telephone lines (23) for bidirectional voice signal transmission to the 10 Base S switching device (14); and with a number of 10 Base S subscriber modems (18), which are connected for bidirectional voice and data signal transmission to the 10 Base S switching device (14).

Abstract: A method and apparatus for splicing programs in the MPEG domain, wherein program data is carried in MPEG transport streams (TS) of data packets. The data packets carry application data, e.g. video and audio data, and a header provided with control data. According to the invention control data objects are established for each data packet for storing time references and data packet status information. The control data objects are queued in different queues dependent on the data packet status or on the status of a group of data packets. Control data objects associated to data packets to be output in an output stream of data packets are selected from the queues, whereupon selected control objects are assembled to a program of associated data packets of different kinds of data. Finally, data packets associated to said selected and assembled control data objects are assembled to an output stream of data packets.

Abstract: A digital broadcast data receiving apparatus comprises a plurality of broadcast data receiving units for receiving digital broadcast data supplied from a plurality of digital broadcast data sources, respectively and a parallel receiving unit for receiving, from the digital broadcast data output from the plural broadcast data receiving units, object program broadcast data which are multiplexed digital broadcast data including program broadcast data relating to an object program broadcast to be viewed by the viewer, and received broadcast data which are digital broadcast data output from the broadcast data receiving unit different from the broadcast data receiving unit which outputs the object program broadcast data.

Abstract: A multicasting system for reception of multimedia information comprising: a content switch coupled to a multimedia content source and at least one multimedia smart terminal. The multimedia content source includes a plurality of multimedia contents, wherein each multimedia content is supported by a primary multimedia stream transmitted over a primary dedicated channel having a primary bandwidth. At least one multimedia smart terminal is configured to receive from the content switch over a network each multimedia content as a secondary multimedia stream transmitted over a secondary channel having a secondary bandwidth. The content switch includes a bandwidth scaler configured to scale each primary multimedia stream to a plurality of secondary multimedia sub-streams that are substantially synchronized.

Abstract: An apparatus for replacing lost PSTN data in a packet network and for generating variable power white noise, includes a lost packet detection unit (402) for detecting lost data packets, a data processing unit (404) for producing in response a lost data output indicating when replacement data needed, data playout unit (408) or data replacement unit (406), each may be implemented as a variable power white noise generator (FIG. 3) to generate replacement data by reusing data stored in an extended playback buffer, and placing the re-used replacement data on an external network.

Abstract: A system is disclosed for delivering information, preferably electronic television program guide information, to a user over a telecommunications network. The network includes the capability of determining whether the user's connection to the network is in an on-hook or off-hook condition, and the information is received and stored at a user site when the user's connection to the network is in an on-hook condition. Information is delivered from a guide provider to a phone company switch point over a land-based or wireless dedicated line. When the user's phone is on-hook, the guide data is sent to the user site through a splitter. The line splitter provides the signal to a data decoder circuit, the output of which is connected to a data input terminal in communication with a television receiver, VCR, cable box, or other piece of equipment for displaying the program guide data on a screen.

Abstract: A message structure is provided for assigning transmission profiles to individual modems for modem transmissions in an upstream direction, on a modem by modem basis. The profiles define a set of transmission parameters, e.g., forward error correction information, symbol rate, frequency, modulation type, etc. that the modem should use to optimize their transmission in the upstream direction in order to maximize throughput. The invention is applicable to both wireless and land-based communications systems, particularly those adhering to the Data-Over-Cable Service Interface Specifications (“DOCSIS”)—Radio Frequency Interface Specification standard, or other standards which are analogous to the DOCSIS standard. The message structure can consist of two parts—a first part that defines a plurality of different types of transmission profiles, and a second part that assigns a particular profile to a modem.

Abstract: A method and apparatus for digital subscriber line (xDSL) communications between one or more digital signal processors (DSPs) and analog front ends (AFEs) each coupled to corresponding subscriber line(s). The apparatus transports channels of data between subscribers and the DSP(s). The apparatus includes a bus for the transport of digital data, a DSP AFE interfaces. The DSP interfaces couples the DSP to the bus. The DSP interface accepts downstream channels of digital data from the DSP and transmits packets each associated with a corresponding one of the downstream channels to the bus. Each of the packets identifies a targeted AFEs coupled to a selected one of the subscriber lines. The AFE interfaces each couple an associated one of the AFEs to the bus. Each of the AFE interfaces transmits selected packets to a selected one of the subscriber lines for the transport to the subscriber.

Abstract: A multi-point communications system is set forth herein. The communications system includes a receiver and transmitter disposed at a primary site for communication with a plurality of remote service units disposed at respective secondary sites. The receiver of the primary site receives OFDM/DMT signals over a number of transmission bins. A transmitter at the remote service unit includes an improved transmitter architecture. The transmitter comprises a first circuit for converting a signal into a first serial digital data stream and a second circuit for generating a second serial digital data stream from the first serial digital data stream of the first means. The second serial digital data stream is a digital representation of an OFDM/DMT signal that is to be transmitted to the receiver of the primary site and is generated from the first serial digital data stream through a modulated direct digital synthesis thereof.

Abstract: A highly reliable industrial control system is produced using a network running a standard serial protocol. A safety protocol is embedded within the standard serial protocol by adding to special error detecting data redundant with the protocol of the standard serial network. In addition an overarching protocol involving timing of messages is imposed to provide the necessary level of reliability in the standard serial network. This approach allows the safety protocol to be used with a wide variety of commercially available serial communication standards without modification of the media or the specialized integrated circuits used for that communication. Safety protocol may be implemented in an additional level for integrated circuits or through firmware changes in programmable aspects of the industrial controller components.

Abstract: A communication system (500) includes a plurality of subscriber systems (510) coupled to a plurality of twisted pair data lines (520). Each subscriber system (510) has an availability guarantee value, which may specify a level of service for the subscriber system (510). A communication server (502) is coupled to the plurality of subscriber systems (510). The communication server (502) selectively couples a subscriber system (510), responsive to a request for service, to either a first modem pool (530) or a second modem pool (540) based on the availability guarantee value associated with the subscriber system (510). Communication server (502) can also provide a soft-termination state and dynamic network address allocation for subscriber systems (510).

Abstract: First digital audio-visual program video component(s) are switched on a second digital audio-visual program video component(s) by switching on the beginning of the first set of images including an Intra-coded picture of the second program video component encountered after the switching command. In the transmission order of images, each bidirectionally predictive-coded picture of the first set of images referring to the set of images pertaining to the set of images preceding it before switching, is substituted for a bidirectionally predictive-coded picture of the video coding which is produced independently of (1) the substituted image content and (2) the contents of the images to which it refers.

Abstract: A communication apparatus includes a first relay destination assignment portion that assigns a first relay destination for relaying transmission data, a second relay destination assignment portion that assigns a second relay destination for transferring the transmission data from the first relay destination to the second relay destination, and a final destination assignment portion that assigns a final destination to which the transmission data are transferred from the second relay destination.

Abstract: A communication system for transmitting voice and data information is disclosed. The communication system includes subscriber modems, system converters and at least one system data pump. The system also includes buffer memory interposed, in the upstream direction, between the converters and the data pump to allow subscriber modems to send a predetermined amount of information to the data pump on demand.

Abstract: A method for providing Digital Subscriber Line (DSL) service to a group of subscribers over respective subscriber loops in the presence of another, existing digital network service provided on at least some of the subscriber loops. Lower, middle and upper frequency bands are assigned for transmission over the subscriber loops, such that the existing digital network service is provided on the lower band. DSL signals are transmitted downstream on the upper band and are received upstream on the middle band, generally without transmitting or receiving DSL signals on the lower band, over those subscriber loops on which the existing digital network service, is provided. Over those subscriber loops on which the existing digital network service is not provided, the DSL signals are transmitted downstream on the lower and upper bands and are received upstream on the lower and middle bands.

Abstract: A communication system for transmitting voice and data information is disclosed. The communication system includes a system converter and a system data pump configured to transform and transmit information between a subscriber and a central location. The system converters convert information between appropriate analog and digital formats. The data pump modulates and demodulates information and is configured to operatively couple to one or more system converters.

Abstract: A method, apparatus, article of manufacture for generating a video signal having an auxiliary data payload complying with a data payload protocol selectable from at least two available data payload protocols is disclosed. An exemplary embodiment of the method comprises the steps of generating a data reference signal (which describes an auxiliary data payload protocol including an auxiliary data payload clock speed) at a baseline clock speed compliant with both of the two data protocols; appending the auxiliary data payload signal at the auxiliary data payload clock speed to the data reference signal; and inserting the data reference signal and the appended auxiliary data payload signal in a portion of at least one line of a video frame. An exemplary embodiment of the apparatus comprises a generator, for generating at least one line of a video frame having a data reference signal at a baseline clock speed compliant with two data protocols and an appended auxiliary data payload.

Abstract: A method and apparatus for supporting a variety of service types in a CDMA2000 1×EV-DO mobile telecommunication system for high-speed data service in a radio communication environment. To receive multiple services according to a plurality of service types, an AT establishes a connection for the data service with a PDSN and configures a session for setting the plurality of service types having different traffic characteristics by the connection. The AT generates a plurality of service instances for the different service types according to the session configuration. It then exchanges data streams with the PDSN in a service instance corresponding to a currently provided service among the plurality of service instances.

Abstract: A method for reassigning channels during the transmission of IEEE-1394 isochronous data to an external synchronous network and an apparatus therefor are provided. The method for reassigning channels during the transmission of isochronous data from the IEEE-1394 network to an external synchronous network includes the steps of (a) forming a mapping table showing the relationship between the channels of the IEEE-1394 network and the channels of the external synchronous network when a call is set with respect to the external synchronous network, (b) reading the channel order from the header of the isochronous data to be transmitted, (c) reassigning the channel order of the IEEE-1394 network according to the channel order of the external synchronous network with reference to the mapping table, and (d) transmitting the isochronous data to the external synchronous network according to the reassigned channel order.

Abstract: An asymmetrical digital subscriber line (ADSL) downstream high speed cell bus interface protocol allows ADSL cell packets to be transmitted downstream from an ADSL bank control unit (ABCU) to a plurality of ADSL line units at a high rate of downstream throughput with flexible and efficient allocation of bandwidths and reduced error probability. The frame boundaries of an ADSL frame are derived from a conventional subscriber bus interface (SBI) frame for carrying conventional narrowband plain old telephone service (POTS) traffic, thereby allowing the ABCU and the ADSL line units to be implemented in existing channel banks with standard channel bank backplane traces.

Abstract: A network control system capable of flexibly constructing an operational environment suitable for each function and equipment in a simple configuration with a light load on a transmission line and each equipment and readily adaptable to a new function not conceivable at present. To attain the above object, the network control system controls at least one piece of equipment from another piece of equipment through a transmission line in a system in which a plurality of equipment is interconnected over the transmission line. The network control system comprises a controller having a user interface and a device having a function list indicating functions thereof as constituents in any equipment connected to the transmission line. The device transmits the function list through the transmission line. The controller notifies information about the device to user using the received function list, and controls the device utilizing the function list in accordance with a user's operation.

Abstract: A method, and a radio transmitter using the method, is disclosed for scheduling air interface capacity between user services in a radio system. The method includes defining a nominal service bit rate, a nominal capacity of the service, and an effective coding rate of the service, and scheduling air interface frame capacity between at least two different services. The scheduling includes computing the bit rate of a first service by multiplying the nominal capacity of the first service by the effective coding rate of the first service, and adding to this normal bit rate of the first service borrowed extra capacity of at least one other service, the bit rate obtained from the extra capacity computed by multiplying a predetermined amount of the nominal capacity of the other service by the effective coding rate of the first service.

Abstract: The present invention provides a method, apparatus and system for processing a multimedia message wherein a multimedia message is received (1202) and it is determined whether the multimedia message should be processed using a customized process (1204). If the multimedia message should be processed with the customized process, the present invention retrieves one or more customized processing instructions from a database (1208) and processes the multimedia message using the one or more customized processing instructions (1210). If, however, the multimedia message should not be processed using the customized process, the present invention processes the multimedia message using a standard process (1206). This method can be implemented using hardware or a computer program embodied on a computer readable medium wherein each block represents a code segment.

Abstract: A hybrid amplifier and regenerator (HAR) device is designed for use in a communications network for carrying downstream traffic in a forward frequency band and for carrying upstream traffic in a reverse frequency band spaced from the forward frequency band and below the forward frequency band. The hybrid amplifier and regenerator (HAR) device comprises an analog amplifier for amplifying the downstream traffic and a digital regenerator. The digital regenerator comprises mapping circuitry for mapping digital upstream traffic carried in at least one ramp band which is part of the reverse frequency band to digital upstream traffic carried in at least one express band which is also part of the reverse frequency band but spaced from the at least one ramp band, and an express band transmitter for transmitting digital upstream traffic from the mapping circuitry in the at least one express band.

Abstract: A simple and low cost architecture for coupling wireless local area network signals between geographically distributed access points and centrally located internetworking devices. A cable access point (CAP) is associated with each respective microcell. Each CAP includes a remote bridge to convert such signals to a convenient transport format depending upon the available cabling. For example, if the available cabling is a cable television (CATV) plant, the transport signals are first converted to a T1 format and up-converted to a carrier frequency suitable for the CATV plant. Alternatively, the transport signals may be converted to IEEE 802.3 cable modem signals. If the available cabling is twisted pair telephone type wiring, the remote bridge converts the transport signals to a suitable Digital Subscriber Line (xDSL) format. The transport signals are collected at a central distribution or head end access point (HAP).

Abstract: An arrangement for implementing a network in an ISDN-BASED customer premises having a 4-wire ISDN S0 bus. The ISDN-BASED customer premises includes a Network Termination Basic Access (NTBA) that interfaces between the residential customer premises and the public switched telephone network by mapping the 2-wire ISDN signal onto the 4-wire bus. A low pass filter is added to the 2-wire send path to eliminate high frequency noise caused by harmonic reflections of the ISDN-based signals on the 4-wire bus. The filter also provides a delay between the zero crossing of the ISDN-based signals and the transmitted network signals, minimizing the effect of the ISDN zero crossings on the home network signal.

Abstract: A hybrid fiber/coaxial cable is attached to an autonomous controller which includes a wireless receiver, transmitter, and antenna. Typically, the autonomous controller is connected near the end of the cable which is remote from the headend. At least one other hybrid fiber/coaxial cable connected to the same headend or distribution hub, provides connectivity for cable data modems and set top boxes in an adjacent neighborhood or community. The second cable is attached to its own, respective autonomous controller which also has a wireless receiver, transmitter, and antenna. The two antennas in the adjacent neighborhoods constitute an antenna cluster. When the first cable's connection to the common headend is interrupted, thereby preventing service to the first neighborhood, its autonomous controller senses the interruption and responds by sending a wireless signal to the controller in the adjacent neighborhood.

Abstract: A system for synchronizing the upstream burst transmission in a cable system to a time specified by the cable head end is disclosed. The system includes a free running counter within a cable modem (CM) or network interface unit (NIU), along with logic to capture the value of this free running counter at the time a frame of MPEG-2 SYNC data arrives, to create a time tag stored in memory. A computer within the cable modem or network interface unit has access to the time tags in memory and the contents of a time synchronization message from the head end, also stored in memory. The computer contains a program to calculate the value of the local counter that corresponds to a time to transmit commanded by the cable system head end. The system includes logic within the CM or NIU to initiate an upstream burst transmission when the value of the local counter becomes equal to a calculated value, thus causing the cable modem to initiate its upstream burst transmission precisely at the time commanded by the head end.

Abstract: A communication system includes a number of communication devices coupled to a data network using communication servers. The communication system supports communication sessions between a variety of networks and devices using, at least in part, XDSL communication techniques. Specifically, information associated with a session passes between a device and an associated server using a modifiable number of XDSL modems and associated twisted pair lines.

Abstract: A coaxial-based communication system connects network-side xDSL services to xDSL CPE devices and avoids interference from a noise spectrum that is degrading to xDSL performance or emission compliance on either the network or customer premises sides on the NID. The system provides an NID and a CPE interface device at the two ends of the coaxial wiring to perform a spectral relocation of the xDSL signal to a lower noise frequency band than is used for the xDSL service. Interfaces to the system are industry standard xDSL, POTS, and CATV services, while the transport medium is the normal coaxial type wiring and CATV splitters found on the customer premise.

Abstract: An operational support system (OSS) securing a local loop to be used for providing digital subscriber loop (DSL) based services to a user location (e.g., home). Upon determination of the services (including bandwidth) to be provided, the OSS may automatically determine a port on a DSL access multiplexor (DSLAM) which is capable of providing the determined services. In turn, the DSLAM port may determine a port on a distribution frame. An order for a local loop specifying the port on the frame may be sent to an incumbent local exchange carrier (ILEC). The ILEC may provide a firm order commit (FOC) date for providing the local loop. The OSS may automatically test the local loop around the FOC date prior to determine whether the local loop has been accurately provided by the ILEC.

Abstract: There is provided a protocol separator having a processor with an input port and output ports, and data links connected to the input port and to the output ports, with the data link to the input port carrying packetized data including packets of different protocols, the data link to one of the output ports carrying packets of a first protocol removed from the stream by the processor, and with the data link connected to the other output port carrying the remainder of the packets which were delivered to the input port. The protocol separator operates by determining at least part of a byte in the selected protocol packets which characterizes that protocol, monitoring the stream to detect the occurrence of that part of a byte, and diverting packets containing the part of a byte from the stream to one of the outputs. The remainder of the stream is fed to the second output.

Abstract: A local networking system, offers integrated communication services to multiple local voice stations and data terminals via a common transmission medium. This system, utilizing Frequency Division Multiplexing (FDM) signals as carrier, transports information with CSMA/CD protocol. Voice transmissions are organized in traditional TDMA format with fixed frame length and dynamically assigned time slots to avoid interference caused by other devices in the system. Data services operate in traditional CSMA/CD format, but restricted to specified blocks of time intervals. The voice service quality is guaranteed because the required channels and bandwidths, up to the designed maximum, are always available when needed. The grade of data service may be impacted by voice traffic volume which is automatically managed by data terminal's inherent design with CSMA/CD protocol. This unified digital multiplexing system is applicable to transmission media with restricted channels.