9787548205562 - sdh光传输网络技术教程 (1 resultados)
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Editorial: China Press, 2000
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Librería: liu xing, Nanjing, JS, Chinaliu xing
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EUR 51,77
Envío por EUR 15,70Se envía de China a Estados Unidos de AmericaCantidad disponible: 1 disponibles
paperback. Condición: New. Language:Chinese.Paperback. Pages. Number: 158 the 1980s. optical fiber communications have been widely used in the field of communications and information. to solve the problem of a standard optical interface. the AT & T Bell Laboratories. Synchronous Optical Network SONET. With the development of rel…ated technologies and user needs change. the early application of quasi-synchronous digital hierarchy (PDH. Plesiochr0.nous Digital Hierarchy) no longer meet the requirements of modern informati.
