ATM originally was designed to upgrade the world's public wide-area telecommunications networks.
ATM is scalable, flexible, and capable of handling voice, video, and data traffic.
ATM can be used in local area networks as well as wide area networks.
An ATM network is made up of a set of ATM switches, and computers, routers, and Layer 2 LAN switches that have ATM interfaces.
ATM protocols operate at Layers 1 and 2. Layer 2 is called the ATM Adaptation Layer.
The physical layer is divided into two sublayers, called the ATM Layer and the ATM Physical Layer.
Several service categories have been defined for ATM. These include Constant Bit Rate (constant bandwidth, such as for uncompressed voice), Real-time Variable Bit Rate (for example, ...