Frame transport systems

The evolution of T1-based private networks is reviewed. It is shown that as a result of bursty data, voice/data segregation, and processor advances, data networks are becoming packet-based. The need for efficient transport of data, and possibly voice, point to a frame-based system with the possibility of eventually moving to a cell-based system. An architecture for supporting connectionless transport over wide-area networks (WANs) may be needed eventually, but for now the connection mode is sufficient. Since virtually all data transport will be protocol-oriented, the need for efficiency at high speeds will supersede the need for the network to guarantee delivery. It is shown that frame relay meets these criteria. As a frame-based, connection-oriented fast-packet technology, it provides the needed functions for emerging corporate networks.<>