M42 通信线路设备 标准查询与下载
共找到 668 条与 通信线路设备 相关的标准，共 45 页
This Recommendation addresses the impact of power line telecommunication (PLT) systems on radiocommunication services and provides as guidance a summary of the protection criteria for radiocommunication services below 470 MHz with regard to interference by an aggregate of PLT systems including examples of some national regulations.
The impact of power line high data rate telecommunication systems on radiocommunication systems below 470 MHz
- ICS
- CCS
- M42
- 发布
- 2013-08-01
- 实施
Amendment 2 to Recommendation ITU-T G.9902 (2012) contains:Corrections and clarifications on the payload encoder;The addition of a network admission procedure based on Recommendation ITU-T G.9961.
Narrowband orthogonal frequency division multiplexing power line communication transceivers for ITU-T G.hnem networks Amendment 2: Clarifications on payload encoder and addition of a network admission procedure (Study Group 15)
- ICS
- CCS
- M42
- 发布
- 2013-08-01
- 实施
Amendment 3 to Recommendation ITU-T G.997.1 (2012) covers the following functionality: Support for European Limit PSD Mask B8-18 for Bandplan 998E17 (new functionality).
(Pre-Published) Handshake procedures for digital subscriber line transceivers Amendment 3
- ICS
- CCS
- M42
- 发布
- 2013-08-01
- 实施
Amendment 2 to Recommendation ITU-T G.994.1 (2012) covers the following functionality: 1.New code point for the extended duration of O-P-VECTOR-1; 2.New code point for Use of O-P-VECTOR 1 flag tones only.
Handshake procedures for digital subscriber line transceivers Amendment 2 – Extended duration of new functionality O-P-VECTOR 1 (Study Group 15)
- ICS
- CCS
- M42
- 发布
- 2013-08-01
- 实施
Amendment 1 to Recommendation ITU-T G.9901 (2012) contains:An ARIB bandplan for G.9902 transceivers; A CENELEC B bandplan for G.9903 transceivers.
Narrow-band orthogonal frequency division multiplexing power line communication transceivers Power spectral density specification Amendment 1 Study Group 15
- ICS
- CCS
- M42
- 发布
- 2013-07-01
- 实施
Access Network Technical Requirements Digital Subscriber Line (DSL) Line Test
- ICS
- CCS
- M42
- 发布
- 2013-06-01
- 实施
- 2013-06-01
Amendment 1 to Recommendation ITU-T G.9903 is presented here as a wholly-integrated version of Recommendation ITU-T G.9903 with the changes of the amendment. Recommendation ITU-T G.9903 contains the physical layer (PHY) and data link layer (DLL) specification for the G3-PLC narrowband orthogonal frequency division multiplexing (OFDM) power line communication transceivers for communications via alternating current and direct current electric power lines over frequencies below 500 kHz. This Recommendation supports indoor and outdoor communications over low-voltage lines, medium-voltage lines, through transformer low-voltage to medium-voltage and through transformer medium-voltage to low-voltage power lines in both urban and long distance rural communications. This Recommendation addresses grid to utility meter applications, advanced metering infrastructure (AMI), and other 'Smart Grid' applications such as the charging of electric vehicles, home automation and home area networking (HAN) communications scenarios.
Narrowband orthogonal frequency division multiplexing power line communication transceivers for G3-PLC networks Study Group 15
- ICS
- CCS
- M42
- 发布
- 2013-05-01
- 实施
Amendment 1 to Recommendation ITU-T G.9903 (2012) contains:The support for an optional coherent mode for use in CENELEC bandplans;Support for a new bandplan in CENELEC B;A Regional Annex for Japan (Annex K);A new routing algorithm (LOADng) that replaces the old one (LOAD);A clause on coexistence with other NB-PLC technologies;Various clarifications and corrections including CFA, Header Compression, and channel access mechanism;A major editorial restructuring.
(Pre-Published) Narrow-band orthogonal frequency division multiplexing power line communication transceivers for G3-PLC networks Amendment 1
- ICS
- CCS
- M42
- 发布
- 2013-05-01
- 实施
本标准规定了PON设备采用双栈方式支持IPv6的各种功能要求,包括QoS、安全、组播等功能。本标准适用于公用电信网中的各类PON设备,专用电信网也可参考使用。
Technical requirements for access network: PON system supporting IPv6
- ICS
- 33.040.50
- CCS
- M42
- 发布
- 2013-04-25
- 实施
- 2013-06-01
本标准规定了角钢类通信塔的生产制造、检验规则、包装标记、存储运输等技术要求。本标准适用于构件主要采用角钢制造和紧固件连接且热浸镀锌防腐的移动通信塔、微波通信塔等通信塔及类似钢结构的设计和制造。
Technical specifications for communication towers of angle steel
- ICS
- 33.060.99
- CCS
- M42
- 发布
- 2013-04-25
- 实施
- 2013-06-01
本标准规定了物理发泡聚乙烯绝缘纵包铜带外导体辐射型漏泄同轴电缆的产品分类、要求、试验方法、检验规则以及标志、包装、运输和贮存等。本标准适用于物理发泡聚乙烯绝缘、纵包铜带外导体构成的辐射型漏泄同轴电缆,其工作频率范围为70MHz~2620MHz。
Communication cable.Radiating leaky coaxial cable with foamed polyethylene dielectric and longitudinal wrapped copper outer conductor
- ICS
- 33.120.10
- CCS
- M42
- 发布
- 2013-04-25
- 实施
- 2013-06-01
Amendment 2 to Recommendation ITU-T G.997.1 (2012) covers the following functionalities: Addition of parameters to enable the vectoring modes. Addition of parameters for the data gathering functionality.
Physical layer management for digital subscriber line transceivers Amendment 2 (Study Group 15)
- ICS
- CCS
- M42
- 发布
- 2013-04-01
- 实施
Amendment 1 to Recommendation ITU-T G.9902 (2012) contains:various clarifications and corrections;the support for an annex with an ARIB bandplan for the Japan region.
Narrowband orthogonal frequency division multiplexing power line communication transceivers for ITU-T G.hnem networks Amendment 1 (Study Group 15)
- ICS
- CCS
- M42
- 发布
- 2013-03-01
- 实施
Electrical Protection of Communications Towers and Associated Structures
- ICS
- 33.040.01
- CCS
- M42
- 发布
- 2013-01-01
- 实施
Voltage Levels for DC-Powered Equipment Used in the Telecommunications Environment
- ICS
- 27.100
- CCS
- M42
- 发布
- 2013
- 实施
Molded Case Circuit Breakers and Their Application
- ICS
- 33.040.50
- CCS
- M42
- 发布
- 2013
- 实施
本标准规定了传输速率为吉比特(1G)和10吉比特(10G)的基于以太网方式的无源光网络(EPON)系统的物理媒质相关(PMD)子层、协调子层(RS)以及多点控制协议(MPCP)、动态带宽分配(DBA)和服务质量(QoS)、组播控制、安全性、操作管理和维护(OAM)以及业务层的协议互通性要求。本标准适用于公众电信网环境下的EPON系统,专用电信网也可参照使用。
Technical requirements for access networks.Interoperability of EPON systems
- ICS
- 33.040.50
- CCS
- M42
- 发布
- 2012-12-28
- 实施
- 2013-03-01
本部分规定了10Gbit/s无源光网络(以下简称XG-PON)系统的参考模型、业务能力要求、物理层要求、系统级要求、管理维护要求和其他要求等。本部分适用于公众电信网环境下的XG-PON设备,专用电信网也可参考使用。
Technical requirements for access network.10-Gigabit-capable passive optical networks (XG-PON).Part 1:General requirements
- ICS
- 33.040.50
- CCS
- M42
- 发布
- 2012-12-28
- 实施
- 2013-03-01
本标准规定了通信设备用射频连接器的技术要求和试验方法。本标准适用于3MHz及3MHz以上频率的通信设备用射频连接器。
General requirements and test methods for radio-frequency connectors of telecommunication equipment
- ICS
- 33.120.30
- CCS
- M42
- 发布
- 2012-12-28
- 实施
- 2013-03-01
本部分规定了10Gbit/s无源光网络(以下简称XG-PON)系统的物理媒质相关(PMD)层要求、ONU的X/S容忍度及上行物理层开销。本部分规定的XG-PON系统主要针对XG-PON1。本部分适用于公众电信网环境下的XG-PON设备,专用电信网也可参照使用。
Technical requirements for access network.10-Gigabit-capable passive optical networks (XG-PON).Part 2:Physical media dependent (PMD) layer requirements
- ICS
- 33.040.50
- CCS
- M42
- 发布
- 2012-12-28
- 实施
- 2013-03-01
