Interoperability of multiple databases for the design and simulation of high-speed digital subscriber lines

The performance evaluation of the high-speed digital subscriber line (HDSL) depends upon the design, linkages, and the cooperative role of the extensive databases during the simulation studies. Such databases are necessary during component design performance evaluation and the overall feasibility studies ofthe HDSL at the basic data rate (144 kilobits/sec) or at the primary data rate (1.544 Megabits/sec in US and 2.048 Mb/s in Europe). The authors present the design and procedures to build these interoperable databases. They are also present the successes and frustrations in organizing and working with such interdependent and interoperable databases