Computers; data processing apparatus, namely, data processors; recorded computer programmes (programs) for use in database management, for use as a spreadsheet, for word processing, for use in system operating; recorded computer operating programs; recorded computer software for use in database management, for use as a spreadsheet, for word processing, for use in system operating; information processing engines and central processing devices, namely, computer hardware and central processing units; transmitters of electronic signals; optical communication equipment, namely, synchronous digital hierarchy (SDH) optical transport systems, namely, terminal multiplexers, add/drop multiplexers, regenerators and computer programs for managing optical networks; network communication equipment, namely computer routers, modems, Digital Subscriber Line Access Multiplexers, wires for use in network communication, communications servers, telecommunication switches for use in network communication, set-top boxes and homegateway; program control phone exchange systems, namely, stored program controlled telephone switches consisting of switching network module, operation and maintenance module, remote switching module, packet handling module, remote subscriber unit, peripheral switching module and computer programs for telecommunication switches and voice mail and message and computer programs to manage, operate and maintain telecommunication systems and telecommunication networks, subscriber line board and trunk line board