Connection-oriented and connectionless transport modes are the two fundamental types of service used to support the flow of information in today's communications networks. Each of the two transport modes is designed to support specific applications and meet specific quality of service (QoS) requirements. However, because of its capability to support high data rates, provide gains in bandwidth use efficiency, and accommodate a broad range of traffic from diverse sources, Asynchronous Transfer Mode (ATM)-a connection-oriented transport mode-is gaining broad acceptance as the preferred transport mode for both connection-oriented and connectionless communications services across multiple public networks. This report provides: (1) a general overview of salient features of connection-oriented ATM architectures and of the Internet Protocol (IP) used to support the connectionless transfer of data; and (2) selected technical interface considerations with potential impact on the transfer of IP data over ATM virtual connections.
National Communications System (U.S.). Office of the Manager: http://www.ncs.gov/