随着新的数据业务不断出现，基于目前广泛使用的铜线的数字接入技术也在不断涌现。由于这类接入技术都是利用目前已敷设的铜线市话电缆，不仅前期投资少，而且为传统的电信运营商保护在铜线电缆上的投资，应付来自诸如有线电视公司、电力公司等潜在竞争对手在新技术、新业务方? As new data services continue to emerge, digital access technologies based on the currently widespread use of copper are also emerging. Because such access technologies make use of the copper wireline cables currently deployed, not only less upfront investment, but also traditional telecommunication operators’ investments in copper cables to cope with potential from such cable companies as power companies Competitors in the new technology, new business side?