A transmission control system in which terminals are connected to an ATM switching network, has a table circuit registering virtual channels presently formed in the ATM switching network in a management table, and a retrieval part for receiving a communication request from one of the terminals and for...http://www.google.com.au/patents/US5067123?utm_source=gb-gplus-sharePatent US5067123 - System for controlling data transmission in ATM switching network