Communication system architecture

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally, each subscriber terminal (102) of the telecommunication system, while an optical fibre supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

CONTROL SYSTEM FOR INTERACTIVE NEWS SERVICES

IMPROVED ACCESSES TO COMMUNICATIONS NETWORKS IN A MULTI-SERVICE ENVIRONMENT

COMMUNICATION SYSTEM ARCHITECTURE, EXCHANGE AND METHOD OF OPERATION

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally, each subscriber terminal (102) of the telecommunication system, while an optical fibre supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

HYBRID FIBRE OPTICS AND COAXIAL CABLE PARTICIPANT CONNECTION NET

VIRTUAL TRIBUTARY/TRIBUTARY UNIT TRANSPORT METHOD AND APPARATUS

A virtual tributary (VT) or tributary unit (TU) of a selected size is multiplexed with transport overhead and further multiplexed with framing bandwidth of an underlying transport technology for providing a virtual tributary/tributary unit plus transport link overhead plus transport framing for transport on a selected transport technology. This enables individual virtual tributaries/tributary units to be transported with defined line overhead and using existing transport technology framing. Several examples of underlying transport technologies used in conjunction with selected transport formats for VT-1.5 and VT-2 superframes are shown.

Method of carrying out multiplex transmission of subscriber service signals

Architektur und Verfahren zur Bereitstellung von interaktiven breitbandigen Produkten und Diensten unter Verwendung einer vorhandenen Telefonvermittlungsanlage

VERBESSERTER ZUGRIFF AUF KOMMUNIKATIONSNETZE IN EINER MEHRDIENSTUMGEBUNG

Method for transmitting control information over an HDSL transmission link

Method for transmitting control information over an HDSL transmission link

Method for synchronisation of travel time and clock phase of digital signals

Data signals which come from an information source, are transmitted via different transmission paths and to which differential interference signals are added on these paths, must be synchronised and corrected in the receiver. The received data signals are in each case read-in at their respective clock rate into an elastic memory at the receiving end. The common output clock of the elastic memories is set via a phase-locked loop (PLL) in such a manner that read-in and -out address of the memory in the service channel are shifted by 180@ with respect to one another. A synchronisation circuit corrects the relative position of read and write pointers with respect to one another in the alternative channels until the output signals in the alternative channels and in the service channel no longer exhibit a difference in transit time. The error signal of the phase-locked loop is formed from the modular-2 sum of the data signals at the output of the elastic memories. The synchronisation circuit ...

Architecture and method for providing interactive broadband products and services using existing telephone plant

An architecture for providing interactive broadband products and services uses existing cable and telephone plant. The architecture includes a central office switch in communication with a head-end server and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the head-end server via cable plant for downstream broadcasts and is further provided in communication with a central office switch via telephone plant for upstream signaling and downstream control messages. ...

Repeater station wherein input frame data are accessible

AN IMPROVED ACCESS TO TELECOMMUNICATIONS NETWORKS IN MULTI-SERVICE ENVIRONMENT

Virtual Tributary/Tributary Unit Transport Method and Apparatus

REPEATER STATION WHEREIN INPUT FRAME DATA ARE ACCESSIBLE

A repeater station comprises an RFD frame synchronization circuit, an AND gate, and an IFD frame synchronization circuit. The RFD frame synchronization circuit outputs a frame synchronization signal indicating the timing of an auxiliary signal by performing frame synchronization with regard to the RFD. The AND gate inhibits clock signals during periods of the auxiliary signals and allows the clock signals to pass through during the other periods. The IFD frame synchronization circuit performs frame synchronization of the RFD with regard to the IFD by carrying out frame synchronization operation in accordance with the clock signals output from the AND gate. The IFD are accessible in the above simple construction.

INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM

A digital video, audio and data distribution system (10) which enables a set top terminal (STT) (30) associated with a customer's television set or the information presentation device to request interactive digital video, audio and data control system messages transmitted via a bi-directional signalling path. The requested interactive service is transmitted from the service provider (20) over a portion of the bandwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A Video Session Connection (VSC) (40) is provided for setting up and maintaining interactive sessions between the set-top terminal (30) and a video service provider (20) during the time the interactive programming is provided to the customer. The set top terminal (30) and service provider (20) establish the Video Session Connection via a two way signalling path within the bandwidth of the transmission medium into the customer's home.

经钟控脉冲线路传输附加信息的方法和装置

... 经一个具有虚拟信道的对称钟控脉冲线路(1)传输所述钟控脉冲信号。经所述钟控脉冲线路传输被转换成不同直流电压(U1-U5)或者电流值的钟控脉冲质量标准(SSM)，并且不会对钟控脉冲信号造成影响。 ...

Teilnehmeranschlußnetz

AN IMPROVED ACCESS TO TELECOMMUNICATIONS NETWORKS IN MULTI-SERVICE ENVIRONMENT

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adaptable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

Virtual tributary/tributary unit transport method and apparatus

A virtual tributary (VT) or tributary unit (TU) of a selected size is multiplexed with transport overhead and further multiplexed with framing bandwidth of an underlying transport technology for providing a virtual tributary/tributary unit plus transport link overhead plus transport framing for transport on a selected transport technology. This enables individual virtual tributaries/tributary units to be transported with defined line overhead and using existing transport technology framing. Several examples of underlying transport technologies used in conjunction with selected transport formats for VT-1.5 and VT-2 superframes are shown.

Architecture and method for providing interactive broadband products and services using existing telephone plant

An architecture for providing interactive broadband products and services uses existing cable and telephone plant. The architecture includes a central office switch in communication with a head-end server and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the head-end server via cable plant for downstream broadcasts and is further provided in communication with a central office switch via telephone plant for upstream signaling and downstream control messages.

HYBRID OPTICAL WAVEGUIDE AND COAXIAL SUBSCRIBER CONNECTION NETWORK

The invention concerns an active CATV coaxial line tree (CN) which is common to each of a plurality of network termination units (NT/A) on the subscriber side and which is provided with amplifiers and into which TV distribution signals are fed from a CATV head-end. The active CATV coaxial line tree (CN) is supplemented to form a bidirectionally operable subscriber connection network for transmitting digital signals of bidirectional interactive telecommunication services by an optical waveguide network (OB) emerging from a higher-order connection device (CU) or leading thereto, such that the optical waveguides (OB) are each connected bidirectionally downstream of the subscriber-subsequent coaxial line amplifier (V) to the branches of the coaxial line network (CN) leading therefrom to the subscribers (NT/A).

DIALOGIC INFORMATION SERVICE CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide a dialogic information service of videos, voices, libraries, dialogic games, etc. SOLUTION: A service provider (20) transmits a requested dialogic service via an exclusive part of the bandwidth of a broadband transmission network (128) for a dialogic digital service. A video session connection(VSC) (40) is provided for setting up and maintaining a dialogic session between a set top terminal (30) and a video session provider (20) during providing of a dialogic program for a customer. The set top terminal (30) and the service provider (20) establish the video session connection via a bidirectional signal path within the bandwidth of a transmission medium to the home of the customer. COPYRIGHT: (C)2003,JPO ...

Communication system architecture,exchange and method of operation

Interactive Information Services Control System

A digital video, audio and data distribution system (10) which enables a set top terminal (STT) (30) associated with a customer's television set or the information presentation device to request interactive digital video, audio and data control system messages transmitted via a bi-directional signalling path. The requested interactive service is transmitted from the service provider (20) over a portion of the bandwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A Video Session Connection (VSC) (40) is provided for setting up and maintaining interactive sessions between the set-top terminal (30) and a video service provider (20) during the time the interactive programming is provided to the customer. The set top terminal (30) and service provider (20) establish the Video Session Connection via a two way signalling path within the bandwidth of the transmission medium into the customer's home.

AN IMPROVED ACCESS TO TELECOMMUNICATIONS NETWORKS IN MULTISERVICE ENVIRONMENT

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adaptable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

REPEATER STATION WHEREIN INPUT FRAME DATA ARE ACCESSIBLE

Architektur und Verfahren zur Bereitstellung von interaktiven breitbandigen Produkten und Diensten unter Verwendung einer vorhandenen Telefonvermittlungsanlage

AN IMPROVED ACCESS TO TELECOMMUNICATIONS NETWORKS IN MULTISERVICE ENVIRONMENT

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful o f resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adaptable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during t he established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in respon se to the network information.

Access to telecommunications networks in multi-service environment

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adapatable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

Repeater station wherein input frame data are accessible

Additional information transmission method especially for SDH networks

The method involves transmitting a clock signal (TS) via a symmetrical clock line (1). At the transmitter side additional information (SSM) with different content is converted into different DC values (U1-U5) or current values. The values are transmitted via a phantom channel of the clock line and detected at the receiver side. Preferably, the additional information transmits different clock quality criterion (SSM). The clock signal is regenerated from the received data signal (SDH/PDH) and the clock quality criterion is extracted and converted into an allocated DC value or current value. A clock quality criterion is transmitted as one of several DC values or current values together with a clock signal. The clock quality criterion is converted into a binary coded additional signal (SSMB), which is inserted into a data signal for transmission.

Interactive information services control system

Zwischenverstärker mit Zugriff auf die Daten des Eingangsrahmens

INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM

A digital video, audio and data distribution system which enables a set top terminal (STT) (30) associated with a customer's television set or the information presentation device to request interactive digital video, audio and data control system messages transmitted via a bi-directional signalling path. The requested interactive service is transmitted from the service provider over a portion of the banwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A video Session Connection (VSC) is provided for setting up and maintaining interactive sessions between the set-top terminal and a video service provider during the time the interactive programming is provided to the customer. The set top terminal (30) and service provider (20) establish the Video Session Connection via a two way signalling path within the bandwidth of the transmission medium into the customer's home.

Architecture and method for providing interactive broadband products and services using existing telephone plant

STEUERSYSTEM FÜR INTERAKTIVE INFORMATIONSDIENSTE

Verfahren zur Übertragung von Kontrollinformationen über eine HDSL-Übertragungsleitung

Virtual tributary/tributary unit transport method and apparatus

Communication system architecture, exchange and method of operation

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally, each subscriber terminal (102) of the telecommunication system, while an optical fibre supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

HYBRIDES LICHTWELLENLEITER- UND KOAXIALLEITUNGS- TEILNEHMERANSCHLUSSNETZ

Method for synchronisation of travel time and clock phase of digital signals

IMAGE INTERPOLATING METHOD

An architecture for providing interactive broadband products and services using a Multi-Channel Multipoint Distribution System (MMDS) and existing telephone plant. The architecture includes an MMDS transmitter in communication with a central office switch, and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the MMDS transmitter for downstream broadcasts and control messages, and is further provided in communication with the central office switch via telephone plant for upstream signaling.

CABLE MODEM OPTIMIZED FOR HIGH-SPEED DATA TRANSMISSION FROM THE HOME TO THE CABLE HEAD

A cable modem provides upstream data signals in a cable system on a return channel. The upstream data signals are provided in a 50-550 MHz frequency range and yet do not affect the picture quality associated with conventional cable television signals. The data is provided on vestigial sidebands associated with the cable television signals or during black periods associated with the cable television signals. The data can be modulated in accordance with quadrature amplitude modulation (QAM) techniques.

Bidirectional subscriber coupling network

The coupling network comprises several coaxial line tree-type networks (CN) common to subscriber side terminals (NT/A). The tree-type networks are linked by optical fibres (OB) to connectors (CU/A). Each coaxial line tree-type network is coupled via a converter (OCC) to an optical fibre tree-type network with an optical branch tap (V). The optical fibre tree-type network is both for bidirectional telecommunication services and for unidirectional distribution telecommunication services. Pref. the bidirectional telecommunication is carried out by a wavelength separating position operation.

A virtual tributary/tributary unit transport method and apparatus

INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM

Architecture and method for providing interactive broadband products and services using existing telephone plant

Method for transmitting control information over an HDSL transmission link

Architektur und Verfahren zur Bereitstellung von interaktiven breitbandigen Produkten und Diensten unter Verwendung einer vorhandenen Telefonvermittlungsanlage

STEUERSYSTEM FÜR INTERAKTIVE INFORMATIONSDIENSTE

VERBESSERTER ZUGRIFF AUF KOMMUNIKATIONSNETZE IN EINER MEHRDIENSTUMGEBUNG

Zwischenverstärker mit Zugriff auf die Daten des Eingangsrahmens

Architecture and method for providing interactive broadband products and services using existing telephone plant

An architecture for providing interactive broadband products and services uses existing cable and telephone plant. The architecture includes a central office switch in communication with a head-end server and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the head-end server via cable plant for downstream broadcasts and is further provided in communication with a central office switch via telephone plant for upstream signaling and downstream control messages.

Subscriber network

Teilnehmeranschlußnetz

The invention concerns an active CATV coaxial line tree (CN) which is common to each of a plurality of network termination units (NT/A) on the subscriber side and which is provided with amplifiers and into which TV distribution signals are fed from a CATV head-end. The active CATV coaxial line tree (CN) is supplemented to form a bidirectionally operable subscriber connection network for transmitting digital signals of bidirectional interactive telecommunication services by an optical waveguide network (OB) emerging from a higher-order connection device (CU) or leading thereto, such that the optical waveguides (OB) are each connected bidirectionally downstream of the subscriber-subsequent coaxial line amplifier (V) to the branches of the coaxial line network (CN) leading therefrom to the subscribers (NT/A).

Cable modem optimized for high-speed data transmission from the home to the cable head

A cable modem provides upstream data signals in a cable system on a return channel. The upstream data signals are provided in a 50-550 MHz frequency range and yet do not affect the picture quality associated with conventional cable television signals. The data is provided on vestigial sidebands associated with the cable television signals or during black periods associated with the cable television signals. The data can be modulated in accordance with quadrature amplitude modulation (QAM) techniques.

AN IMPROVED ACCESS TO TELECOMMUNICATIONS NETWORKS IN MULTI-SERVICE ENVIRONMENT

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adaptable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

Method and system for the transmission of a data signal in a VC-12-container in transmission channels

Architecture and method for providing interactive broadband products and services using existing telephone plant

Verfahren und Anordnung zur Übertragung von Zusatzkriterien über eine Taktleitung

Verfahren zur Übertragung von Zusatzkriterien über eine Taktleitung (1, 21), dadurch gekennzeichnet, daß ein Taktsignal (TS) über eine symmetrische Taktleitung (1, 21) übertragen wird und daß sendeseitig unterschiedliche Inhalte aufweisende Zusatzkriterien in unterschiedliche Gleichspannungen (U1-U5) oder Gleichstromwerte umgesetzt werden, die über einen mittels der Taktleitung (1, 21) gebildeten Phantomkanal übertragen und empfangsseitig detektiert werden.

A virtual tributary/tributary unit transport method and apparatus

A virtual tributary (VT) or tributary unit (TU) of a selected size is multiplexed with transport overhead and further multiplexed with framing bandwidth of an underlying transport technology for providing a virtual tributary/tributary unit plus transport link overhead plus transport framing for transport on a selected transport technology. This enables individual virtual tributaries/tributary units to be transported with defined line overhead and using existing transport technology framing. Several examples of underlying transport technologies used in conjunction with selected transport formats for VT-1.5 and VT-2 superframes are shown. ...

Sistema de prestação de serviços interativo e processos de proporcionar pelo menos um dentre programas de video audio e dados solicitados por um cliente de estabelecer uma conexão bidirecional entre um provedor de serviços de dados e um terminal para topo de tv de cliente e de iniciar e controlar a apresentação de um serviço de dados

Communication system architecture, exchange having a plurality of broadband modems and method of supporting broadband operation on a one to one basis

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally each subscriber terminal (210) of the telecommunication system, while an optical fiber supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

Switchable optical network unit

A switch in an optical network unit selectively couples line side ports of the line cards of the unit to individual line circuits in drop cable wiring extending to the customer premises served by the unit. The switchable optical network unit (SONU) permits rapid automated upgrades of service. For example, automatic switching of a line circuit to a line card offering an upgraded service together with automatic provisioning of the SONU to activate service through that line card provides the new upgraded service over the existing line circuit, without requiring a technician to install a new line card or manually connect the line card to the line circuit. If the drop cable to the customer premises includes a primary line circuit and an auxiliary line circuit, the line port can be switched over from the primary line circuit to the auxiliary line circuit to automatically restore service in the event of a failure of the primary line circuit. Alternatively, the SONU can automatically connect a ...

Method of carrying out multiplex transmission of subscriber service signals

A method of carrying out multiplex transmission of a subscriber service signal, includes the steps of (a) converting a subscriber service signal including x digital subscriber line (xDSL) signals, from an analog form to a digital form, (b) storing a plurality of thus converted sampling digital signals (3-1 to 3-3) and control signals (5-1 to 5-3) into a first multiple signal, and multiplexing in time-sharing a plurality of the thus produced first multiple signals to thereby produce a second multiple signal, and (c) transmitting the second multiple signal.

Repeater station wherein input frame data are accessible

A repeater station comprises an RFD frame synchronization circuit (32), an AND gate (34), and an IFD frame synchronization circuit (36). The RFD frame synchronization circuit (32) outputs a frame synchronization signal indicating the timing of an auxiliary signal by performing frame synchronization with regard to the RFD. The AND gate (34) inhibits clock signals during periods of the auxiliary signals and allows the clock signals to pass through during the other periods. The IFD frame synchronization circuit (36) performs frame synchronization of the RFD with regard to the IFD by carrying out frame synchronization operation in accordance with the clock signals output from the AND gate (34). The IFD are accessible in the above simple construction. ...

Communication system architecture, exchange and method of operation

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally, each subscriber terminal (102) of the telecommunication system, while an optical fibre supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

Method for transmitting control information over an HDSL transmission link

The invention relates to a method for transmitting control information over an HDSL transmission link. The HDSL transmission link (36) is connected to an SDH network, whereupon according to the invention (a) data from the SDH network to the HDSL link is mapped into the frame structure according to the HDSL system, and (b) pointers required by the SDH network are generated in the data frames passing from the HDSL link to the SDH network, the pointers indicating the phase of the payload within the frame structure. In order to provide a transparent control channel to control, from the SDH network, the part of the telecommunications network situated beyond the HDSL link, the control channel is formed of the pointer bytes V4 of the TU-12 frames to be transmitted over the HDSL link. ...

Access to telecommunications networks in multi-service environment

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adapatable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

Architecture and method for providing interactive broadband products and services using existing telephone plant

An architecture for providing interactive broadband products and services using a Multi-Channel Multipoint Distribution System (MMDS) and existing telephone plant. The architecture includes an MMDS transmitter in communication with a central office switch, and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the MMDS transmitter for downstream broadcasts and control messages, and is further provided in communication with the central office switch via telephone plant for upstream signaling.

HYBRID OPTICAL WAVEGUIDE AND COAXIAL CABLE SUBSCRIBER CONNECTION NETWORK

Method and apparatus to perform cell synchronization in an asynchronous transfer mode network

A method and apparatus for synchronizing ATM cells is disclosed. A synchronization unit receives a data clock signal and a plurality of control signals. Based on those signals, a sync pulse is generated. If synchronization is not achieved within a predetermined time period, the sync pulse is shifted one bit location. Through iterative shifting of the sync pulse, synchronization is ultimately achieved.

INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide interactive information services of video, audio, library, interactive game and the like. SOLUTION: A requested interactive service is transmitted from a service provider (20) over a portion of the bandwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A video session connection (VSC) (40) is provided for setting up and maintaining interactive sessions between a set-top terminal (30) and the video session provider (20) during the period time that the interactive programming is provided to the customer. The set-top terminal (30) and the service provider (20) establish a video session connection via a two-way signalling path within the bandwidth of the transmission medium into the customer's home. COPYRIGHT: (C)2007,JPO&INPIT ...

REPEATER

PURPOSE: To allow input in-frame information to be accessed with simple configuration by outputting a clock outputted from an AND means while its change is stopped in a timing of an auxiliary signal in a 2nd signal string. CONSTITUTION: A 1st synchronization means 10 inputs a 2nd signal string and a clock synchronously therewith and is operated based on the clock and synchronously with the 2nd signal string to output a signal representing a timing of an auxiliary signal. An AND means 12 inputs the clock and an output signal of the synchronization means 10 and outputs a clock whose change is stopped in the timing of the auxiliary signal. A 2nd synchronization means 14 inputs the 2nd signal string and a clock outputted from the AND means 12, is operated based on the clock, uses the 2nd signal string as the 1st signal string and is synchronously therewith so as to reference the information in the 1st signal string. Thus, the information in an input frame data is accessed without elimination ...

Access to telecommunications networks in multi-service environment

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adapatable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

Method for transmitting control information over an HDSL transmission link

Communication system architecture, exchange having a plurality of broadband modems and method of supporting broadband operation on a one to one basis

To reduce the complexity, size and power dissipation associated with the deployment of xDSL-type modems in distribution points (140-142) of a telecommunications network, a transparent concentrating optical transmission scheme is interposed between an exchange (100) and a subscriber terminal (210). Specifically, xDSL-type modems (102-104 and 220-224) are employed both within the exchange (100) and, nominally each subscriber terminal (210) of the telecommunication system, while an optical fiber supports the transmission of frequency division multiplexed broadband signals sent between the exchange (100) and the distribution points (140-142). Twisted-pairs then couple respective broadband signals received and demultiplexed at the distribution points (140-142) to appropriately addressed subscriber terminals (210), while upstream transmissions are subjected to a complementary process from the xDSL modems (220-224) in the subscriber terminals (210) to the xDSL modems (220-224) in the exchange ...

Method of carrying out multiplex transmission of subscriber service signals

A method of carrying out multiplex transmission of a subscriber service signal, includes the steps of (a) converting a subscriber service signal including x digital subscriber line (xDSL) signals, from an analog form to a digital form, (b) storing a plurality of thus converted sampling digital signals and control signals into a first multiple signal, and multiplexing in time-sharing a plurality of the thus produced first multiple signals to thereby produce a second multiple signal, and (c) transmitting the second multiple signal.

Subscriber network

Bidirectional subscriber coupling network The coupling network comprises several coaxial line tree-type networks (CN) common to subscriber side terminals (NT/A). The tree-type networks are linked by optical fibres (OB) to connectors (CU/A). Each coaxial line tree-type network is coupled via a converter (OCC) to an optical fibre tree-type network with an optical branch tap (V). The optical fibre tree-type network is both for bidirectional telecommunication services and for unidirectional distribution telecommunication services. Pref. the bidirectional telecommunication is carried out by a wavelength separating position operation.

Repeater station wherein input frame data are accessible

A repeater station comprises an RFD frame synchronization circuit, an AND gate, and an IFD frame synchronization circuit. The RFD frame synchronization circuit outputs a frame synchronization signal indicating the timing of an auxiliary signal by performing frame synchronization with regard to the RFD. The AND gate inhibits clock signals during periods of the auxiliary signals and allows the clock signals to pass through during the other periods. The IFD frame synchronization circuit performs frame synchronization of the RFD with regard to the IFD by carrying out frame synchronization operation in accordance with the clock signals output from the AND gate. The IFD are accessible in the above simple construction.

Method and system for the transmission of a data signal in a VC-12-container in transmission channels

In this method, a digital signal (DS) is inserted into a VC-12 container (VC-12), differences in the data rates being equalised by stuffing. The container data (VC-D) are divided into three subsignals (TS1, TS2, TS3) and inserted into, in each case, one HDSL pulse frame (HPR1, HPR2, HPR3). The remaining free time slots in the HDSL pulse frame are occupied by fixed stuffing bits (R1, R2,...) or/and supplementary information (Z1). The subsignals (TS1, TS2, TS3) thus supplemented are transmitted via three HDSL data channels (L1, L2, L3) and inserted at the receiving end into a VC-12 container which is transmitted in a synchronous transport module (STM-N). <IMAGE>

Access to telecommunications networks in multi-service environment

In current voice telephony, CATV, and wireless networks, traffic is channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adapatable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network information.

INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM

A digital video, audio and data distribution system which enables a set top terminal (STT) (30) associated with a customer's television set or the information presentation device to request interactive digital video, audio and data control system messages transmitted via a bi-directional signalling path. The requested interactive service is transmitted from the service provider over a portion of the banwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A video Session Connection (VSC) is provided for setting up and maintaining interactive sessions between the set-top terminal and a video service provider during the time the interactive programming is provided to the customer. The set top terminal (30) and service provider (20) establish the Video Session Connection via a two way signalling path within the bandwidth of the transmission medium into the customer's home.

System for providing services interactive processes and providing at least one of audio and video programs data requested by a client of establishing a connection between a bidirectional data services provider terminal and to top of TV client and initiate and control the presentation of a data service

Switchable optical network unit

A switch in an optical network unit selectively couples line side ports of the line cards of the unit to individual line circuits in drop cable wiring extending to the customer premises served by the unit. The switchable optical network unit (SONU) permits rapid automated upgrades of service. For example, automatic switching of a line circuit to a line card offering an upgraded service together with automatic provisioning of the SONU to activate service through that line card provides the new upgraded service over the existing line circuit, without requiring a technician to install a new line card or manually connect the line card to the line circuit. If the drop cable to the customer premises includes a primary line circuit and an auxiliary line circuit, the line port can be switched over from the primary line circuit to the auxiliary line circuit to automatically restore service in the event of a failure of the primary line circuit. Alternatively, the SONU can automatically connect a ...

Switchable optical network unit

A switch in an optical network unit selectively couples line side ports of the line cards of the unit to individual line circuits in drop cable wiring extending to the customer premises served by the unit. The switchable optical network unit (SONU) permits rapid automated upgrades of service. For example, automatic switching of a line circuit to a line card offering an upgraded service together with automatic provisioning of the SONU to activate service through that line card provides the new upgraded service over the existing line circuit, without requiring a technician to install a new line card or manually connect the line card to the line circuit. If the drop cable to the customer premises includes a primary line circuit and an auxiliary line circuit, the line port can be switched over from the primary line circuit to the auxiliary line circuit to automatically restore service in the event of a failure of the primary line circuit. Alternatively, the SONU can automatically connect a ...

Cable modem optimized for high-speed data transmission from the home to the cable head

A cable modem provides upstream data signals in a cable system on a return channel. The upstream data signals are provided in a 50-550 MHz frequency range and yet do not affect the picture quality associated with conventional cable television signals. The data is provided on vestigial sidebands associated with the cable television signals or during black periods associated with the cable television signals. The data can be modulated in accordance with quadrature amplitude modulation (QAM) techniques.

Repeater station wherein input frame data are accessible

A repeater station comprises an RFD frame synchronization circuit, an AND gate, and an IFD frame synchronization circuit. The RFD frame synchronization circuit outputs a frame synchronization signal indicating the timing of an auxiliary signal by performing frame synchronization with regard to the RFD. The AND gate inhibits clock signals during periods of the auxiliary signals and allows the clock signals to pass through during the other periods. The IFD frame synchronization circuit performs frame synchronization of the RFD with regard to the IFD by carrying out frame synchronization operation in accordance with the clock signals output from the AND gate. The IFD are accessible in the above simple construction.

Switchable optical network unit

A switch in an optical network unit selectively couples line side ports of the line cards of the unit to individual line circuits in drop cable wiring extending to the customer premises served by the unit. The switchable optical network unit (SONU) permits rapid automated upgrades of service. For example, automatic switching of a line circuit to a line card offering an upgraded service together with automatic provisioning of the SONU to activate service through that line card provides the new upgraded service over the existing line circuit, without requiring a technician to install a new line card or manually connect the line card to the line circuit. If the drop cable to the customer premises includes a primary line circuit and an auxiliary line circuit, the line port can be switched over from the primary line circuit to the auxiliary line circuit to automatically restore service in the event of a failure of the primary line circuit. Alternatively, the SONU can automatically connect a ...

Virtual tributary/tributary unit transport method and apparatus

A virtual tributary (VT) or tributary unit (TU) of a selected size is multiplexed with transport overhead and further multiplexed with framing bandwidth of an underlying transport technology for providing a virtual tributary/tributary unit plus transport link overhead plus transport framing for transport on a selected transport technology. This enables individual virtual tributaries/tributary units to be transported with defined line overhead and using existing transport technology framing. Several examples of underlying transport technologies used in conjunction with selected transport formats for VT-1.5 and VT-2 superframes are shown.

Cable modem optimized for high-speed data transmission from the home to the cable head

A cable modem provides upstream data signals in a cable system on a return channel. The upstream data signals are provided in a 50-550 MHz frequency range and yet do not affect the picture quality associated with conventional cable television signals. The data is provided on vestigial sidebands associated with the cable television signals or during black periods associated with the cable television signals. The data can be modulated in accordance with quadrature amplitude modulation (QAM) techniques.

Method and apparatus for transmitting additional information via clock control pulse line

Improved access to telecommunications networks in a multi-service environment

(57)【要約】 現在の音声電話、ＣＡＴＶ、および無線ネットワークでは、トラヒックがアクセスと転送の両方のためにチャネル化されている。このチャネル化は、マルチ・サービスの要求する帯域幅や保留時間が多様化したり、サービスが、性質がバースト的なトラヒックを生成する場合、資源の浪費となる。本発明は、ネットワークに対して、柔軟性と適応性のあるマルチ・サービス・アクセスを行えるようにすることで、これらの課題を解決するものである。顧客の要求のチェックは、接続要求があるとき、および／または接続が確立されている間に、ローカル・アクセス上のトラヒックを監視することによって行われる。このローカル・アクセスは、送信要求に従うよう構成され、また、ネットワーク情報に応答するよう構成される。

Steuersystem für interaktive informationsdienste

Verbesserter zugriff auf kommunikationsnetze in einer mehrdienstumgebung

Arkitektur og fremgangsmåte for å tilveiebringe interaktive bredbåndsprodukter og -tjenester ved anvendelse av eksisterende telefonanlegg

Arkitektur og fremgangsmåte for å tilveiebringe interaktive bredbåndsprodukter og -tjenester ved anvendelse av eksisterende telefonanlegg

Arquitectura y procedimiento para ofrecer productos y servicios de banda ancha interactivos a partir de instalaciones telefonicas ya existentes.

UNA ARQUITECTURA PARA SUMINISTRAR PRODUCTOS Y SERVICIOS DE BANDA ANCHA INTERACTIVOS USA UNA PLANTA TELEFONICA Y DE CABLE EXISTENTE. LA ARQUITECTURA INCLUYE UN CONMUTADOR DE OFICINA CENTRAL EN COMUNICACION CON UN SERVIDOR CABEZA A EXTREMO Y UN DISPOSITIVO DE EQUIPO DE PREMISAS DE CLIENTE (CPE) COMO POR EJEMPLO UN EMULADOR DE MODEM, TERMINAL DE DATOS, UN TERMINAL U ORDENADOR PERSONAL. EL DISPOSITIVO CPE SE SUMINISTRA EN COMUNICACION CON EL SERVIDOR DE CABEZA EXTREMO POR UNA PLANTA DE CABLE PARA RADIODIFUSIONES AGUAS ABAJO Y ADEMAS SUMINISTRADO EN COMUNICACION CON UN CONMUTADOR DE OFICINA CENTRAL POR PLANTA TELEFONICA PARA UAN SEÑALIZACION AGUAS ARRIBA Y MENSAJES DE CONTROL PARA AGUAS ABAJO.

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