Description: Maman line tenders in China, not only is the design of the new buildings, often followed those of the past cabling technology, resulting in a variety of cabling systems not compatible, it difficult to adapt to the development of new technologies, and pipelines overcrowded, and the wiring on the investment is often repetitive. This situation, but also with companies, enterprises, government departments expanded, updated equipment, personnel changes in the office environment changes, which become increasingly worse. Any additions, changes may lead to changes in the overall situation, not only affects the efficiency of companies, enterprises, government departments are operating have an adverse effect. In particular, with the ISDN (integrated services digital network) the emergence of applica
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