Arnesys designs, manufactures & markets special heavy duty VoIP telephones for use on roads, railways, metros, ships, factories, chemical plants, refineries, power plants etc.. Arnesys can provide phones with handsets or headsets or handsfree which can resist weather or water or dirt or chemicals or vandalism or explosive gases & liquids etc.. Arnesys supplies both VoIP and analog POTS (Extek) versions of its phones and supplies them to a worldwide market.Arnesys and Extek supply phones with brand names such as Tuftel, Haztel, Arnystel etc.. In addition, Arnesys sells parts, spare parts and accessories for its own and others heavy duty telephones & intercoms.