ITU-T X 54 SPANISH-1988 ALLOCATION OF CHANNELS ON INTERNATIONAL MULTIPLEX LINKS AT 64 kbit s《64 kbit s国际多路复用链路的分配》.pdf

上传人:deputyduring120 文档编号:805246 上传时间:2019-02-04 格式:PDF 页数:4 大小:46.71KB
下载 相关 举报
ITU-T X 54 SPANISH-1988 ALLOCATION OF CHANNELS ON INTERNATIONAL MULTIPLEX LINKS AT 64 kbit s《64 kbit s国际多路复用链路的分配》.pdf_第1页
第1页 / 共4页
ITU-T X 54 SPANISH-1988 ALLOCATION OF CHANNELS ON INTERNATIONAL MULTIPLEX LINKS AT 64 kbit s《64 kbit s国际多路复用链路的分配》.pdf_第2页
第2页 / 共4页
ITU-T X 54 SPANISH-1988 ALLOCATION OF CHANNELS ON INTERNATIONAL MULTIPLEX LINKS AT 64 kbit s《64 kbit s国际多路复用链路的分配》.pdf_第3页
第3页 / 共4页
ITU-T X 54 SPANISH-1988 ALLOCATION OF CHANNELS ON INTERNATIONAL MULTIPLEX LINKS AT 64 kbit s《64 kbit s国际多路复用链路的分配》.pdf_第4页
第4页 / 共4页
亲,该文档总共4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 X.54SECTOR DE NORMALIZACINDE LAS TELECOMUNICACIONESDE LA UITREDES PBLICAS DE DATOSTRANSMISIN, SEALIZACIN Y CONMUTACINATRIBUCIN DE CANALES EN ENLACESMLTIPLEX INTERNACIONALESDE 64 kbit/sRecomendacin UIT-T X.54(Extracto del Libro Azul)NOTAS1 La Recomendacin

2、 UIT-T X.54 se public en el fascculo VIII.3 del Libro Azul. Este fichero es un extracto delLibro Azul. Aunque la presentacin y disposicin del texto son ligeramente diferentes de la versin del Libro Azul, elcontenido del fichero es idntico a la citada versin y los derechos de autor siguen siendo los

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

4、ente 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 VIII.3 - Rec. X.54 1Recomendacin X.54Fascculo VIII.3 - Rec. X.54ATRIBUCIN DE CANALES EN EN

5、LACES MLTIPLEXINTERNACIONALES DE 64 kbit/s(Ginebra, 1980; modificada en Mlaga-Torremolinos, 1984)El CCITT,considerandoque en las Recomendaciones X.50 y X.51 se definen esquemas de multiplexacin para enlaces internacionalesde 64 kbit/s,recomienda por unanimidadque, para la atribucin de canales afluen

6、tes, se apliquue lo siguiente:En los enlaces internacionales que transmiten canales de datos multiplexados a 64 kbit/s con arreglo a lasRecomendaciones X.50 y X.51, la atribucin de canales afluentes con velocidades de 0,6, 2,4, 4,8 y 9,6 kbit/s dentro dela trama multiplexada se elija, por acuerdo bi

7、lateral, entre las configuraciones indicadas en el cuadro 1/X.54.Nota 1 Si, por acuerdo bilateral, se transmite un solo canal a 48 kbit/s, admisible facultativamente dentro deuna trama multiplexada X.51, esa configuracin tendr el nmero 00.Nota 2 El nmero de fase i (i = 1, 5) corresponde al conjunto

8、de envolventes i + 5j (j = 0,., 15 para tramasde 80 envolventes; j = 0, 3 para las tramas de 20 envolventes) de cada trama. Cada fase contiene ya sea un canalde 9,6 kbit/s o dos de 4,8 kbit/s o cuatro de 2,4 kbit/s o 16 canales de 0,6 kbit/s.2 Fascculo VIII.3 - Rec. X.54CUADRO 1/X.54Atribucin de can

9、ales afluentes en la tramamultiplexada de 64 kbit/sNmero de la Nmero de la faseconfiguracin12 3 4 500 4801 9,6 9,6 9,6 9,6 9,60203049,69,69,69,69,69,69,69,69,69,69,69,64,82,40,60506070809109,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,64,84,84,82,42,40,64,82,40,62,40,60,6111213141516171819209

10、69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,64,84,84,84,84,84,82,42,42,40,64,84,84,82,42,40,62,42,40,60,64,82,40,62,40,60,62,40,60,60,62122232425262728293031323334359,69,69,69,69,69,69,69,69,69,69,69,69,69,69,64,84,84,84,84,84,84,84,84,84,82,42,42,42,40,64,84,84,84,84,84,82,42,42,40,62

11、42,42,40,60,64,84,84,82,42,40,62,42,40,60,62,42,40,60,60,64,82,40,62,40,60,62,40,60,60,62,40,60,60,60,63637383940414243444546474849505152535455564,84,84,84,84,84,84,84,84,84,84,84,84,84,84,82,42,42,42,42,40,64,84,84,84,84,84,84,84,84,84,82,42,42,42,40,62,42,42,42,40,60,64,84,84,84,84,84,82,42,42,40,62,42,42,40,60,62,42,42,40,60,60,64,84,84,82,42,40,62,42,40,60,62,42,40,60,60,62,42,40,60,60,60,64,82,40,62,40,60,62,40,60,60,62,40,60,60,60,62,40,60,60,60,60,6

展开阅读全文
相关资源
猜你喜欢
  • BS EN 60317-69-2017 Specifications for particular types of winding wires Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular aluminium wire class 220《.pdf BS EN 60317-69-2017 Specifications for particular types of winding wires Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular aluminium wire class 220《.pdf
  • BS EN 60317-8-2010 Specifications for particular types of winding wires - Polyesterimide enamelled round copper wire class 180《特种绕组线规范 聚酰胺酯漆包圆铜绕组线 180级》.pdf BS EN 60317-8-2010 Specifications for particular types of winding wires - Polyesterimide enamelled round copper wire class 180《特种绕组线规范 聚酰胺酯漆包圆铜绕组线 180级》.pdf
  • BS EN 60318-1-2009 Electroacoustics - Simulators of human head and ear - Ear simulator for the measurement of supra-aural and circumaural earphones《电声学 人头和耳模拟器 超级听力和头戴护耳式耳机的测量用耳模拟器.pdf BS EN 60318-1-2009 Electroacoustics - Simulators of human head and ear - Ear simulator for the measurement of supra-aural and circumaural earphones《电声学 人头和耳模拟器 超级听力和头戴护耳式耳机的测量用耳模拟器.pdf
  • BS EN 60318-3-2015 Electroacoustics Simulators of human head and ear Acoustic coupler for the calibration of supra-aural earphones used in audiometry《电声学 人头和耳模拟器 用于测听计的超级听力耳机校正用听力耦.pdf BS EN 60318-3-2015 Electroacoustics Simulators of human head and ear Acoustic coupler for the calibration of supra-aural earphones used in audiometry《电声学 人头和耳模拟器 用于测听计的超级听力耳机校正用听力耦.pdf
  • BS EN 60318-4-2010 Electroacoustics - Simulators of human head and ear - Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts《电声学 人头和耳.pdf BS EN 60318-4-2010 Electroacoustics - Simulators of human head and ear - Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts《电声学 人头和耳.pdf
  • BS EN 60318-5-2006 Electroacoustics - Simulators of human head and ear - 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts《.pdf BS EN 60318-5-2006 Electroacoustics - Simulators of human head and ear - 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts《.pdf
  • BS EN 60318-6-2008 Electroacoustics - Simulators of human head and ear -Part 6 Mechanical coupler for the measurement of bone vibrators《电声学 人头和人耳模拟器 骨振器的测量用机械耦合器》.pdf BS EN 60318-6-2008 Electroacoustics - Simulators of human head and ear -Part 6 Mechanical coupler for the measurement of bone vibrators《电声学 人头和人耳模拟器 骨振器的测量用机械耦合器》.pdf
  • BS EN 60320-1-2015 Appliance couplers for household and similar general purposes General requirements《家用和类似用途设备耦合器 一般要求》.pdf BS EN 60320-1-2015 Appliance couplers for household and similar general purposes General requirements《家用和类似用途设备耦合器 一般要求》.pdf
  • BS EN 60320-2-1-2001 Appliance couplers for household and similar general purposes - Specification of requirements for individual types of coupler - Sewing machine couplers《家用和类似用途.pdf BS EN 60320-2-1-2001 Appliance couplers for household and similar general purposes - Specification of requirements for individual types of coupler - Sewing machine couplers《家用和类似用途.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