Fundamentals: ATM stands for Asynchronous Transfer Mode.ATM technology is viable for both local (LANs) and wide (WANs) area networks. It supports many types of traffic including voice, data, facsimile, real-time video, CD-quality audio, and imaging. ATM offers bandwidth of up to 155Mbps (and now 622 Mbps or 2.4 Gbps between switches) on the backbone and delivery pipes of 25 Mbps or more to the desktop. ATM is a transport protocol that operates roughly at the MAC sub-layer of the Data Link Layer (OSI) |