ATM communication system

摘要

The communication system operating in accordance with an asynchronous transfer mode exhibits interconnected ATM communication devices, a plurality of concentrator devices (K1, K2) being connected to at least one of the ATM communication devices. The concentrator devices, together with the relevant ATM communication device, are arranged in a loop network (RING). Within this loop network, each of the concentrator devices is connected, on the one hand, to the relevant ATM communication device and, on the other hand, to each of the remaining concentrator devices via a separate virtual path. In each case, a plurality of virtual connections with specified transmission capacities can be conducted via the individual virtual paths. Information with respect to transmission capacities already occupied for virtual connections set are carried separately for the individual virtual paths in the relevant ATM communication device and are updated with each setting-up and clearing-down of a virtual connection. In accordance with this information, a new virtual connection is only allowed when the transmission capacity on the respective virtual path is still adequate.