It supports Nx64 kbps transmission of more than 18,000 feet over 26 AWG copper telephone wire without repeaters. Small size and low power dissipation make the Bt8960 ideal for line-powered voice pairgain systems capable of provid ing four or six clear 64 kbps channels. The Bt8960 is a highly integrated device that includes all of the active circuitry needed for a complete 2B1Q transceiver. In the receive portion of the Bt8960, a variable gain amplifier optimizes the signal level according to the