Asynchronous Transfer Mode (ATM) aimed to transmits all information such as data, video or voice which is conveyed in small fixed size.
- An information is transmitted in ATM in the form of fixed-size units called Cells or Packet.
- Cell Switching with virtual circuits at local area networks (LANs) as well as wide area networks (WANs).
- ATM carry multiple types of traffic with end-to-end quality of service, All cells follow the same path to the destination, it is independent of a transmission medium.
ATM Cell Format – each cell is 53 bytes long which consists of a 5 bytes header and 48 bytes payload.
ATM Applications : ATM WANs, Multimedia virtual private networks, Frame relay backbone, Residential broadband networks, Carrier infrastructure for telephone and private line networks.