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ITU-T G.651.1 AMD 1-2008 光纤接入网的50/125μm渐变型折射率多模光纤的特性.1号修正案:1号新附录.多模光纤的规范进展的历史视角.15号研究组

Amendment 1 to Recommendation ITU-T G.651.1 provides background information on the evolution of the specification of multimode optical fibre cable in ITU-T Recommendations.

Characteristics of a 50/125 µm multimode graded index optical fibre cable for the optical access network Amendment 1: New Appendix I Historical perspective on the evolution of the specification of multimode optical fibre cable Study Group 15

ITU-T G.977 FRENCH-2006 光放大器的海底光缆系统特性.15号研究组

La Recommandation UIT-T G.977 est consacrée aux spécifications d'interface et de performance des systèmes sous-marins optiques utilisant des amplificateurs à fibres optiques comme répéteurs de ligne. Elle traite des aspects liés aux systèmes mono-onde (SWS, single wavelength system), aux systèmes à multiplexage par répartition en longueur d'onde (WDMS, wavelength division multiplexing system) ainsi qu'aux systèmes à multiplexage par répartition dense en longueurs d'onde (DWDMS, dense wavelength division multiplexing system). L'Annexe A porte sur l'implémentation physique de systèmes sous-marins à fibresoptiques et à amplification optique.

Characteristics of optically amplified optical fibre submarine cable systems Study Group 15

ITU-T G.983.4 CORR 1 FRENCH-2005 使用动态带宽分配增加业务容量的宽带光纤接入系统.勘误表1.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统

Le présent corrigendum à la Rec.UIT-T G.983.4 (11/2001) spécifie les points de code révisés pour un intervalle partagé afin d'indiquer le nombre decellules accumulées dans un conteneur T-CONT. Le présent corrigendum s'applique aux réseaux optiques passifs à large bande (B-PON, broadband passive optical network) avec attribution dynamique de largeur de bande (DBA, dynamic bandwidth assignment).

A broadband optical access system with increased service capability using dynamic bandwidth assignment Corrigendum 1 SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Optical line systems for lo

ITU-T G.983.4 CORR 1 SPANISH-2005 使用动态带宽分配增加业务容量的宽带光纤接入系统.勘误表1.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统

El presente corrigendum a la Rec.UIT-T G.983.4 (11/2001) especifica los puntos de código revisados en un intervalo dividido para informar elnúmero de células acumuladas en la memoria intermedia T-CONT. Este corrigendum se aplica a la B-PON con asignación dinámica de anchura de banda (DBA).

A broadband optical access system with increased service capability using dynamic bandwidth assignment Corrigendum 1 SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Optical line systems for lo

ITU-T L.61 SPANISH-2004 采用浮动技术的光缆安装.系列L:施工安装和电缆以及其它外部线缆元件的保护.6号研究组

This Recommendation: gives a general description of the machine and operations needed in performing the installation of optical cables as defined in ITU-T Rec. L.10 inside ducts or conduits by means of floating technique; provides considerations on infrastructure, floating equipment and setting needed in using such a technique; gives advice on the preliminary steps that should be performed; gives advice on procedures and precautions to be considered during the cable installation.

Optical fibre cable installation by floating technique SERIES L: CONSTRUCTION INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Study Group 6

ITU-T L.61 FRENCH-2004 采用浮动技术的光缆安装.系列L:施工安装和电缆以及其它外部线缆元件的保护.6号研究组

This Recommendation: gives a general description of the machine and operations needed in performing the installation of optical cables as defined in ITU-T Rec. L.10 inside ducts or conduits by means of floating technique; provides considerations on infrastructure, floating equipment and setting needed in using such a technique; gives advice on the preliminary steps that should be performed; gives advice on procedures and precautions to be considered during the cable installation.

Optical fibre cable installation by floating technique SERIES L: CONSTRUCTION INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Study Group 6

ITU-T L.58 SPANISH-2004 光缆:接入网的特殊需要.6号研究组

This Recommendation: refers to multimode graded index and single-mode optical fibre cables to be used for telecommunication access networks; deals with special characteristics of the optical fibre cables for access networks. The basic characteristics and structure of optical fibre cables are described in ITU-T Recs L.10, L.26 and L.43 respectively, based on environmental categories; deals with fundamental considerations related to optical fibre cables for access networks.

Optical fibre cables: Special needs for access network Study Group 6

ITU-T L.58 FRENCH-2004 光缆:接入网的特殊需要.6号研究组

This Recommendation: refers to multimode graded index and single-mode optical fibre cables to be used for telecommunication access networks; deals with special characteristics of the optical fibre cables for access networks. The basic characteristics and structure of optical fibre cables are described in ITU-T Recs L.10, L.26 and L.43 respectively, based on environmental categories; deals with fundamental considerations related to optical fibre cables for access networks.

Optical fibre cables: Special needs for access network Study Group 6

ITU-T L.57 SPANISH-2003 光缆的空中辅助安装.6号研究组

Air-assisted installation is based on forcing a continuous high-speed airflow along the cable with an air source. Moving air force pushes the cable and makes it advance forward at a typical speed supported by the equipment.

Air-assisted installation of optical fibre cables Study Group 6

ITU-T L.56 SPANISH-2003 铁路沿线光缆的安装

The current situation of the telecommunication market, and wide use of optical fibres as a transmission media, have contributed to the fact that some companies, apart from the incumbent telecommunication providers, like railway companies, have become interested in laying optical cables along their own infrastructures. These installations could be used for internal communications of the railway companies, or be offered to other customers for public telephony.

Installation of optical fibre cables along railways

ITU-T L.56 FRENCH-2003 铁路沿线光缆的安装

The current situation of the telecommunication market, and wide use of optical fibres as a transmission media, have contributed to the fact that some companies, apart from the incumbent telecommunication providers, like railway companies, have become interested in laying optical cables along their own infrastructures. These installations could be used for internal communications of the railway companies, or be offered to other customers for public telephony.

Installation of optical fibre cables along railways

ITU-T G.989.3 SPANISH-2003 电话线网络收发器-绝缘功能.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统.15号研究组

This Recommendation specifies the characteristics and applications of an isolation function for use with phoneline networking transceiver devices in accordance with ITU-T Recs G.989.1 and G.989.2.

Phoneline networking transceivers Isolation function SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Optical line systems for local and access networks Study Group 15

ITU-T G.989.3 FRENCH-2003 电话线网络收发器-绝缘功能.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统.15号研究组

This Recommendation specifies the characteristics and applications of an isolation function for use with phoneline networking transceiver devices in accordance with ITU-T Recs G.989.1 and G.989.2.

Phoneline networking transceivers Isolation function SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Optical line systems for local and access networks Study Group 15

ITU-T G.983.3 AMD 1 FRENCH-2002 通过波长分配增加业务容量的宽带光纤接入系统.系列G:传输系统和媒体数字系统和网络.数字传输系统.数字段和有线数字系统.本地接入网络的光线路系统

ITU-T Rec.G.983.1 on "Broadband optical access systems based on passive optical networks (PON)" describes systems with transmission rates of 155.52 or 622.08 Mbit/s downstream and 155.52 Mbit/s upstream. G.983.1 Amendment 1 allows enhancement to include 622.08 Mbit/s upstream. ITU-T Rec.G.983.3 which describes "Broadband Passive Optical Network (B-PON) systems with increased service capability by wavelength allocation" could not take account of Amendment 1/G.983.1. This Amendment describes modifications to the requirements for isolation and return loss in G.983.3 made necessary because of the power budget changes needed for 622.08 Mbit/s upstream rate.

A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networ

ITU-T G.983.3 AMD 1 SPANISH-2002 通过波长分配增加业务容量的宽带光纤接入系统.系列G:传输系统和媒体数字系统和网络.数字传输系统.数字段和有线数字系统.本地接入网络的光线路系统

ITU-T Rec.G.983.1 on "Broadband optical access systems based on passive optical networks (PON)" describes systems with transmission rates of 155.52 or 622.08 Mbit/s downstream and 155.52 Mbit/s upstream. G.983.1 Amendment 1 allows enhancement to include 622.08 Mbit/s upstream. ITU-T Rec.G.983.3 which describes "Broadband Passive Optical Network (B-PON) systems with increased service capability by wavelength allocation" could not take account of Amendment 1/G.983.1. This Amendment describes modifications to the requirements for isolation and return loss in G.983.3 made necessary because of the power budget changes needed for 622.08 Mbit/s upstream rate.

A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networ

ITU-T L.43 SPANISH-2002 直埋光缆

After the trunk line networks, the use of optical fibre cables is spreading rapidly to access networks. Today, some cables are buried in order to respect the environmental landscape, to reduce network construction costs, or to reduce the extension of underground facilities like ducts and tunnels.

Optical fibre cables for buried application

ITU-T L.43 FRENCH-2002 直埋光缆

After the trunk line networks, the use of optical fibre cables is spreading rapidly to access networks. Today, some cables are buried in order to respect the environmental landscape, to reduce network construction costs, or to reduce the extension of underground facilities like ducts and tunnels.

Optical fibre cables for buried application

ITU-T G.983.3 FRENCH-2001 通过波长分配增加业务容量的宽带光纤接入系统.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统

This amendment adds a new appendix to ITU-T Rec.G.983.3 that establishes the industry best practice optical budgets for the B-PON system operating at 622 Mbit/s downstream and 155 Mbit/s upstream.This Recommendation describes some extended functions for the ATM-PON system defined in This Recommendation describes the Broadband Passive Optical Network BPON) system that uses wavelength division multiplexing techniques (WDM). These WDM techniques allow operators to provide additional services without disturbing the basic ATM-PON system.

A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networ

ITU-T G.983.3 SPANISH-2001 通过波长分配增加业务容量的宽带光纤接入系统.系列G:传输系统和媒体数字系统和网络.数字段和有线数字系统.本地接入网络的光线路系统

This amendment adds a new appendix to ITU-T Rec.G.983.3 that establishes the industry best practice optical budgets for the B-PON system operating at 622 Mbit/s downstream and 155 Mbit/s upstream.This Recommendation describes some extended functions for the ATM-PON system defined in This Recommendation describes the Broadband Passive Optical Network BPON) system that uses wavelength division multiplexing techniques (WDM). These WDM techniques allow operators to provide additional services without disturbing the basic ATM-PON system.

A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networ

ITU-T E.681 FRENCH-2001 基于光纤同轴电缆混合系统的IP接入网的流量工程方法.2号研究组

This Recommendation describes generic preferred methods for the traffic control and dimensioning of IP-access networks based on hybrid fiber/coax (HFC) system, taking into account the capabilities and limitations of the cable-modem based access technology. The main focus is on the provision over HFC system of IP telephony service in an integrated voice/data environment. Factors affecting system capacity for the support of voice connections are described. Topics discussed include the dimensioning of a single upstream channel, upstream channel pooling, and interoperability between DOCSIS 1.0 and DOCSIS 1.1.

Traffic Engineering Methods for IP Access Networks Based on Hybrid Fiber/Coax System Study Group 2