RM TeleCom AB is the Swedish distributor for Ring-Master Communication & Security Systems. The product has been distributed in Sweden since 1968. The Ring-Master solutions meet customers’ needs for integrated communication and security solutions and our customers work in such use-intensive areas as industry, transportation, health institutions, offices, police & prisons, banks & financial institutions, security & safety, where quick and dependable communication is important for safeguarding life, health and material values.
RM TeleCom AB has installed  some of Sweden's largest internal communication systems, including Sveriges Riksdag, Regeringskansliet, Göteborg Landvetter Airport, Ringhals Nuclear Plant and many Hospitals, Health Care Institutions and Correctional Facilities (Prisons/Police).

Svensk version

Ring-Master Communication & Security Systems are produced by Zenitel Norway ASA. It is the company's objective to develop and market the Ring-Master product range based on the newest available technology. The company is continuously working on product enhancement and new products to meet the market’s demand, this, to further strengthen the company’s position as the leading supplier in the world market.
Links to Ring-Master web pages:
Ring-Master Norway
Ring-Master USA
Ring-Master Germany