In recent years, xDSL technology is attracting attention as a high bit rate data transmission technology using existing metallic cables. In this paper, we discuss the introduction of xDSL technology into railways as a data transmission method by metallic cables. First, we describe an outline of the metallic cable transmission systems in railway operation. Second, we list the subjects to be discussed in introducing the xDSL technology in railways, and report performance and field tests of xDSL transmission equipment. In these tests, we were able to obtain prospect of adopting this technology and part of basic data for the introduction of xDSL technology into railways.

Copyright (c) 2002 Railway Technical Research Institute