Abstract: In an asynchronous transfer mode network (401), a network controller (404) is connected to terminal equipment units (406) through logic transmission line circuits (408) so as to receive a call signal which includes a parameter representative of a network class and which is produced by one of the terminal equipment units. Each of the terminal equipment units is connected to one of ATM exchangers (402) each of which is connected to at least one of them. The control network controller is connected to the ATM exchangers through logic transmission line circuits (405) so as to order them to admit a connection required by the call signal.

Abstract: In an asynchronous transfer mode network (401), a network controller (404) is connected to terminal equipment units (406) through logic transmission line circuits (408) so as to receive a call signal which includes a parameter representative of a network class and which is produced by one of the terminal equipment units. Each of the terminal equipment units is connected to one of ATM exchangers (402) each of which is connected to at least one of them. The control network controller is connected to the ATM exchangers through logic transmission line circuits (405) so as to order them to admit a connection required by the call signal.

Abstract: In an ATM network, a data base is provided in a network controller for holding data pertaining to network topology and remaining network resource. The controller has a supervisory circuit that constantly monitors communication links between ATM switches. Route decision and resource reservation logic circuitry updates the data base if a network fault condition is detected by the supervisory circuit also. The logic circuitry receives, from a source terminal, a reservation request indicating a reservation of an end-to-end network resource between a scheduled start time and a scheduled end time, and makes a search through the data base to reserve the network resource in the data base if the network resource is available.