Asymmetrical digital subscriber line components, namely, central office and remote terminal telecommunications hardware modules, access concentraters; test sets and central office data collection interfaces, all with electronic mountings therefor; network channel terminating equipment, namely, tie trunk interface module, dial long line modules, and data station termination modules, all with electronic mountings therefor, repeaters and power supplies; access multiplex components, namely electronic mountings for central office units, ATM interface modules, and associated digital subscriber line modules, intelligent envelope delay equalizers; 4-wire tandem D-4 channel units; intelligent equalized transmission only channel units, T1 station products, namely network interface unit modules and network interface units with performance monitoring modules, all with electronic mountings therefore, and T1 repeaters; DS3 network interface units; T1 test units, namely looping sets and performance monitoring data retrieval sets; T1 maintenance switch systems, namely, common control units, line cards and electronic mountings therefore; network interface units, and electronic mountings therefore; high-bit-rate digital subscriber line components, namely, central office and remote terminal units, and central office maintenance units, all with electronic mountings therefore; litejacks and quadjacks; advance span termination systems; ISDN/DDS plug-in units; telecommunications -related software for connecting computer network users and to provide access to a global computer network, and telecommunications-related equipment, namely ADSL, HDSL2 and DSL modems, residential gateways and routers, and Ethernet adapters and cables; networking software; software and hardware designed to provide multiple users and multiple computer units common access to a global computer network; software and hardware designed to provide multiple users and multiple computer units common access to DSL and ADSL lines; modems and software for modems; broadband modems; residual gateways and routers, products used within the networks of telecommunications and Internet operators and service providers that utilize and enable broadband access and communications, namely, ADSL Digital Subscriber Line Access Multiplexers, POTS Splitters, DSL network interfaces and maintenance units, and Ethernet adapters and cables