As ATM takes its place as the dominant switching fabric within both carrier networks and very large corporate enterprise networks, there is a growing need for inexpensive, QoS-enabled solutions for customer access into an ATM-based wide area network. There has been a need for an access system that has a specific application focus, supports QoS to the end system, promotes simplicity in deployment and management, and has a superior cost-value ratio. This Guide analyzes this new requirement and describes the range of functions that such devices will have to provide. This Guide can help the network developer to plan the separation between network domains and to specify the functionality needed at the customer interface point.
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