Telecommunications devices, apparatus, equipment and installations, namely, switches, PABXS, routers, servers, interactive vocal servers, computer hardware and peripherals for call centers for computer and telecommunications networks, computer hardware and peripherals for contact centers for computer and telecommunications networks, computers and their peripherals, computer data terminals, computer telecommunications terminals, electronic extension cards for data terminals, telephones, telecopiers, answering machines, modems, devices for transmitting alarm messages and/or signals, electrical cables; computer cables; telecommunications software namely interface software for computer and/or telecommunications networks; operating software associated with switches, PABXs, routers, servers, interactive vocal servers, call centers for computer and/or telecommunications networks, contact centers for computer and/or telecommunications networks,software for configuration and management of telecommunication switches, PABXs, routers, servers, interactive vocal servers, call centers and contact centers, software for quality control and detection of defaults and incidents in computer and telecommunications networks, software for electronic mail, software for voice messaging, software for maintaining and creating telephone and Internet user directories, software for confidentiality of communications by identification of the users, by access control by crypting