Rostek Oy is a provider of products and services such as internet protocol (ip) telephony consultants,value added telephone services,internet telephony service providers (voip),payphone card network operators,telephone services, satellite,network providers for mobile telephones (cellular phones),telecommunication operators,broadband over power line (bpl) services,internet protocol (ip) network providers,internet portals, environmental issues, sustainable development,internet consultants, online,mobile internet services,internet portal consultants and services,internet access providers,secure internet payment consultants and services,internet service providers (isps),telephone installation design and development consultants,billing/invoicing services, online,telesales services,training courses, use of the internet,training courses, internet programming,mobile telephone (cellular phone) design services,operating systems, single user, single-tasking (desktop/personal computer (pc)),operating systems for hand-held computers/personal digital assistants (pda),software, internet security,software, web server,software for personal digital assistants (pda),software, computer telephony integration (cti),telephone accounting and billing systems,information systems, telephone, voice activated,voice recording (logging) systems, digital,telephone conference telecommunication equipment,emergency telephones, portable, gps/gsm,telephones with electric generator,telephone intercommunication systems, wireless, indoor,telephone intercommunication equipment, flameproof,telephone intercommunication equipment, loudspeaker type,telephone intercommunication equipment, push-button types,telephone intercommunication equipment, direct speech,telephones, voice over internet protocol (voip),internet telephones,text telephones,mobile telephones (cellular phones), second-hand,mobile telephone (cellular phone) jamming equipment,mobile telephone (cellular phone) detectors,aerials, mobile telephone (cellular phone),ear sets and microphones, hands-free, for mobile telephones (cellular phones),accessories for mobile telephones (cellular phones),telephone switchboards.