When ATM was originally conceived in the 1990s, many people saw it as the 'next best thing' in networking technologies since it could handle both LAN and WAN technologies, allowing users to 'jump' between LAN and WAN without difficulty, in other words, it would have become a single integrated system combining both.
Unfortunately, ATM never became a "magic" end-to-end solution integrating LAN and WAN technologies. ATM adapters for LAN-based desktops were expensive, and the standards for interconnecting networks using the ATM cell system were often confused and delayed. Telephone companies, ISPs and large corporations made use of ATM for their WAN architecture and critical backbones because of the QoS it could assure.
Posted by: Wasim Javed
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