Abstract: A telecommunications network is provided which includes a protector device for protecting an associated telecommunications line. The protector device protects the associated telecommunications line from hazardous voltages and/or currents. Further, and in accordance with the present invention, the protector device also protects the associated telecommunications line from unauthorized use. The protector device regulates the class of service provided over the associated telecommunications line. A filter circuit integral with the protector device can be readily configured to pass or block signal frequencies depending on the class of service purchased.

Abstract: A method and system for planning a future telecommunications network from an existing telecommunications network interconnecting a plurality of users utilizes an input device for determining future demands for the future telecommunications network. A processor then determines future characteristics of a plurality of loops connecting each of the users to a central office based on the future demands. Future characteristics of a plurality of transports connecting each of the central offices is determined based on the future demands. The processor then determines future characteristics of switches disposed in each of the central offices based on the future characteristics of the plurality of loops and the plurality of transports. Future characteristics of common systems disposed within each of the central offices is determined based on the future characteristics of the switches.