21. The Elite chip was an 8-way link crossbar switch, used to form the packet-switched network . 22. "' Telenet "'was an American commercial packet switched network which went into service in 1974. 23. For example, a circuit-switched network provider charges different tariffs at different times of the day. 24. As the Bell companies develop packet networks, they " will not abandon their circuit-switched networks ," 25. The SCI standard defines a packet switched network . 26. By abandoning a circuit-switched network , Sprint is pushing aside traditional suppliers in favor of new partners. 27. Packet switching with its supporting packet processing functions has several practical benefits over traditional circuit-switched networks : 28. In such a switched network , transmitted frames may not be received by all other reachable nodes. 29. We're redefining the AT & T circuit-switched network to one that is both optical and broadband. 30. For example, state transition diagrams are often used to model queuing performance in a circuit-switched network .
