telecommunication products, namely, multi-channel digital subscriber line (DSL) products; telecommunication products, namely, chips and chip sets that provide for the electronic transmission of digital data, video and voice communication, including chips and chip sets that provide high-speed digital subscriber line (DSL) communication; electrical circuit, namely, an electrical filter circuit; integrated circuit, namely, an integrated circuit for an electronic communications device; telecommunication products, namely, telecommunications transceiver to enable the electronic transmission of digital data, video and voice communications; integrated circuits; telecommunications hardware and operating software based on XDSL (high-speed digital subscriber line) technology, namely, digital signal processors, software for data encoding/decoding and error detection/correction using adaptive signal processing; XDSL systems comprised of line units, remote units, doublers, central office shelves, remote enclosures, and network management software for use with telephone company central site operations in order to provide point-to-point, one site connecting to another site and point-to-multipoint, one site connecting to multiple sites; XDSL systems comprised of hardware access platforms, line units, interface cards, desktop units, namely, computers and workstations and network management software for use within local area network environments; electronic bridging units for coupling Ethernet networks, power supplies, and centralized simple network management protocol (SNMP) network software; integrated circuits containing single-chip XDSL circuits; electronic telecommunications transmission equipment, namely, digital modems for use in the transmission of high speed digital data