The ATM Forum was founded in 1991, an international non -profit organization that was founded by various manufacturers of private data processing and telecommunications technology, who wanted to drive the ATM technology. Since 2005 she is part of the IP / MPLS Forum ( Internet-Protokoll/Multiprotocol Label Switching ), also a non-profit organization whose members include the Frame Relay Forum and the MPLS Forum.
Each manufacturer, operator, or user could be a member. Virtually all major manufacturers of telecommunications equipment were a member, just as large users such as the U.S. Department of Defense. At its most active period, the number of member companies was about 500 focus of the work was to standardize the ATM technology, which is made of " Technical Committees ". For this purpose the members met usually every 2 months, 5 times a year in North America, one in Europe.