ITU-T R 76 SPANISH-1988 RESERVE CHANNELS FOR MAINTENANCE MEASUREMENTS ON CHANNELS OF INTERNATIONAL VFT SYSTEMS《国际音频电报系统信道中维护测量用备用信道》.pdf

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ITU-T R 76 SPANISH-1988 RESERVE CHANNELS FOR MAINTENANCE MEASUREMENTS ON CHANNELS OF INTERNATIONAL VFT SYSTEMS《国际音频电报系统信道中维护测量用备用信道》.pdf_第1页
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1、UNIN INTERNACIONAL DE TELECOMUNICACIONESUIT-T R.76SECTOR DE NORMALIZACINDE LAS TELECOMUNICACIONESDE LA UITTELEGRAFATRANSMISIN TELEGRFICACANALES DE RESERVA PARA MEDICIONESDE MANTENIMIENTO EN LOS CANALESDE LOS SISTEMAS DE TELEGRAFAARMNICA INTERNACIONALESRecomendacin UIT-T R.76(Extracto del Libro Azul)

2、NOTAS1 La Recomendacin UIT-T R.76 se public en el fascculo VII.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 versin y los derechos de aut

3、or 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 derechos. No podr reproducirse

4、 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 VII.1 - Rec. R.76 1Recomendacin R.76Fascculo VII.1 - Rec. R.76CANALES

5、 DE RESERVA PARA MEDICIONES DE MANTENIMIENTO EN LOS CANALESDE LOS SISTEMAS DE TELEGRAFA ARMNICA INTERNACIONALES(antigua Recomendacin B.38 del CCIT, 1951; modificada en Ginebra, 1964)El CCITT,considerandoque es conveniente que las mediciones de mantenimiento en los canales de los sistemas de telegraf

6、a armnicainternacionales produzcan un mnimo de perturbaciones en la explotacin,recomienda por unanimidad1) que, siempre que sea posible, las mediciones en un canal en servicio de un sistema de telegrafa armnica seefecten slo despus de haber reemplazado previamente, en caso necesario, este canal por un canal de reserva;2) a este efecto, el CCITT considera deseable que cada sistema de telegrafa armnica disponga de un canal dereserva.3) Cuando sea posible esta sustitucin, se informar previamente al utilizador del canal de que van a efectuarsemediciones o pruebas en su circuito.

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