ITU-T M 400 SPANISH-1988 NUMBERING IN RADIO-RELAY LINKS OR OPEN-WIRE LINE SYSTEMS《无线中继链路或明线线路系统中的编号》.pdf

上传人:outsidejudge265 文档编号:799810 上传时间:2019-02-02 格式:PDF 页数:3 大小:42.04KB
下载 相关 举报
ITU-T M 400 SPANISH-1988 NUMBERING IN RADIO-RELAY LINKS OR OPEN-WIRE LINE SYSTEMS《无线中继链路或明线线路系统中的编号》.pdf_第1页
第1页 / 共3页
ITU-T M 400 SPANISH-1988 NUMBERING IN RADIO-RELAY LINKS OR OPEN-WIRE LINE SYSTEMS《无线中继链路或明线线路系统中的编号》.pdf_第2页
第2页 / 共3页
ITU-T M 400 SPANISH-1988 NUMBERING IN RADIO-RELAY LINKS OR OPEN-WIRE LINE SYSTEMS《无线中继链路或明线线路系统中的编号》.pdf_第3页
第3页 / 共3页
亲,该文档总共3页,全部预览完了,如果喜欢就下载吧!
资源描述

1、UNIN INTERNACIONAL DE TELECOMUNICACIONESUIT-T M.400SECTOR DE NORMALIZACINDE LAS TELECOMUNICACIONESDE LA UITMANTENIMIENTO:SISTEMAS INTERNACIONALES DE TRANSMISIN(ANALGICOS)NUMERACIN EN LOS SISTEMASDE RADIOENLACES O DELNEAS AREAS DE HILO DESNUDORecomendacin UIT-T M.400(Extracto del Libro Azul)NOTAS1 La

2、 Recomendacin UIT-T M.400 se public en el fascculo IV.1 del Libro Azul. Este fichero es un extractodel Libro Azul. Aunque la presentacin y disposicin del texto son ligeramente diferentes de la versin del Libro Azul,el contenido del fichero es idntico a la citada versin y los derechos de autor siguen

3、 siendo los mismos (Vase acontinuacin).2 Por razones de concisin, el trmino Administracin se utiliza en la presente Recomendacin para designara una administracin de telecomunicaciones y a una empresa de explotacin reconocida. UIT 1988, 1993Reservados todos los derechos. No podr reproducirse o utiliz

4、arse la presente Recomendacin ni parte de la misma decualquier forma ni por cualquier procedimiento, electrnico o mecnico, comprendidas la fotocopia y la grabacin enmicropelcula, sin autorizacin escrita de la UIT.Fascculo IV.1 - Rec. M.400 1Recomendacin M.400Fascculo IV.1 - Rec. M.400NUMERACIN EN LO

5、S SISTEMAS DE RADIOENLACESO DE LNEAS AREAS DE HILO DESNUDOSi se trata de un radioenlace multiplexado en frecuencia, se considerar la disposicin de los canales, de losgrupos primarios, secundarios, etc. en la banda de base que ha de transmitirse por ese sistema.Con objeto de favorecer la interconexin

6、 directa, el CCITT y el CCIR han colaborado en la redaccin de laRecomendacin G.423 1, de la que se desprende que la numeracin de los canales telefnicos, grupos primarios,secundarios, etc. del sistema de radioenlaces se hace segn las indicaciones dadas en las Recomendaciones M.320 aM.390.Se aplican las mismas reglas a los sistemas de portadoras en lneas areas de hilo desnudo que proporcionen,por lo menos, un grupo primario de 12 canales.Referencias1 Recomendacin del CCITT Interconexin en la banda de base radioenlaces mltiplex por distribucin defrecuencia, Tomo III, Rec. G.423.

展开阅读全文
相关资源
猜你喜欢
  • GOST 25 502-1979 Strength analysis and testing in machine building Methods of metals mechanical testing Methods of fatigue testing《在机械制造中的强度分析和试验 金属的机械测试方法 疲劳测试方法》.pdf GOST 25 502-1979 Strength analysis and testing in machine building Methods of metals mechanical testing Methods of fatigue testing《在机械制造中的强度分析和试验 金属的机械测试方法 疲劳测试方法》.pdf
  • GOST 25 503-1997 Design calculation and strength testing Methods of mechanical testing of metals Method of compression testing《强度计算及试验 金属机械试验方法 压缩试验法》.pdf GOST 25 503-1997 Design calculation and strength testing Methods of mechanical testing of metals Method of compression testing《强度计算及试验 金属机械试验方法 压缩试验法》.pdf
  • GOST 25 504-1982 Strength calculation and testing Methods of fatigue strength behaviour calculation《强度计算和试验 疲劳强度性能的计算方法》.pdf GOST 25 504-1982 Strength calculation and testing Methods of fatigue strength behaviour calculation《强度计算和试验 疲劳强度性能的计算方法》.pdf
  • GOST 25 505-1985 Design calculation and strength testing Methods of mechanical testing of metals Method of testing on the low cycle fatigue at heat mechanical loading《设计 计算和强度试验 金属.pdf GOST 25 505-1985 Design calculation and strength testing Methods of mechanical testing of metals Method of testing on the low cycle fatigue at heat mechanical loading《设计 计算和强度试验 金属.pdf
  • GOST 25 506-1985 Design calculation and strength testing Methods of mechanical testing of metals Determination of fracture toughness characteristics under the static loading《强度计算和试.pdf GOST 25 506-1985 Design calculation and strength testing Methods of mechanical testing of metals Determination of fracture toughness characteristics under the static loading《强度计算和试.pdf
  • GOST 25 507-1985 Strength calculation and testing in machine building Methods of fatigue testing under service loading General requirements《机械制造中的强度计算和试验 工作负荷下的疲劳测试方法 一般要求》.pdf GOST 25 507-1985 Strength calculation and testing in machine building Methods of fatigue testing under service loading General requirements《机械制造中的强度计算和试验 工作负荷下的疲劳测试方法 一般要求》.pdf
  • GOST 25 601-1980 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for tensile properties on plane specimens at normal el.pdf GOST 25 601-1980 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for tensile properties on plane specimens at normal el.pdf
  • GOST 25 602-1980 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for compression properties at normal elevated and low .pdf GOST 25 602-1980 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for compression properties at normal elevated and low .pdf
  • GOST 25 603-1982 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for tensile properties of ring specimens at normal ele.pdf GOST 25 603-1982 Design calculation and strength testings Methods of mechanical testing of polymeric composite materials Test for tensile properties of ring specimens at normal ele.pdf
  • 相关搜索

    当前位置:首页 > 标准规范 > 国际标准 > 其他

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1