ITU-T Q 31 SPANISH-1988 NOISE IN A NATIONAL 4-WIRE AUTOMATIC EXCHANGE《国内四路自动交换机的噪声》.pdf

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1、UNIN INTERNACIONAL DE TELECOMUNICACIONESUIT-T Q.31SECTOR DE NORMALIZACINDE LAS TELECOMUNICACIONESDE LA UITRECOMENDACIONES GENERALES SOBRE LACONMUTACIN Y LA SEALIZACINTELEFNICASEXPLOTACIN INTERNACIONAL AUTOMTICAY SEMIAUTOMTICARUIDO EN UNA CENTRAL AUTOMTICANACIONAL A CUATRO HILOSRecomendacin UIT-T Q.3

2、1(Extracto del Libro Azul)NOTAS1 La Recomendacin UIT-T Q.31 se public en el fascculo VI.1 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 ver

3、sin y los derechos de autor siguen siendo los 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 derec

4、hos. No podr reproducirse o utilizarse 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 VI.1 - Rec. Q.31 1Recomendacin Q.31Fascculo VI.1 - Rec. Q.31RUIDO EN UNA CENTRAL AUTOMTICA NACIONAL A CUATRO HILOSEs conveniente que las exigencias relativas a las condiciones de ruido en una central automtica nacional a cuatrohilos sean las mismas que para una central internacional (vase el 5 de la Recomendacin Q.45).

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