When ATM was introduced, its distinction from traditional LAN and WAN transmission protocols was immediately noticed. Its support of a diverse range of operating speeds, optimization towards multimedia applications through the use of small MTU size and Quality of Service (QoS) transport contracts, and dependency on switches for implementation made ATM stand out from the crowd. It was also believed by some of its strongest early advocates that ATM would evolve into the "all in one" LAN/WAN networking solution. ATM-specific applications would be developed, and mixed protocol LAN and WAN implementations would be replaced with ATM operating over different media and at different rates, depending upon the environment's needs.
In the end, ...
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