推动光纤到路边的ＡＤＳＬ刘雪原译　　光纤革命早有所闻，但由于本地环路的巨大挑战迫使它在端局陷入了困境。光纤革命似乎又处于重大突破的关头。尽管光纤所传送的数据业务的比重不断扩大，但今天的光纤信息高速公路所传送的业务量大多数正是长途时分复用语音业务。目前... ADSL to promote optical fiber to the curb has long been heard of the optical fiber revolution, but due to the enormous challenges of the local loop forced it to end in the dilemma. The optical fiber revolution seems to be at the moment of major breakthrough. Although the proportion of data traffic transmitted by optical fibers continues to grow, most of the traffic carried by today’s optical fiber information superhighways is precisely long-distance time division multiplexed voice services. Currently...