COMMUNICATION SYSTEM HAVING A LIMITED NUMBER OF COMMUNICATION CHANNELS

摘要

Method of controlling communication links in a communication system, each communication link occupying at least one of a limited number of communication channels and being used for communications between commuunication devices (4, 5). The invention allows to establish a requested first communication link, even if a free communication channel is not available. Control means (1) are provided to determine at least one second communication link which uses at least two communication channels and to initiate a release procedure for at least one of the communication channels of the identified communication link. The released communication channel is used to establish the requested first communication link. After termination of the requested and established link, the communication channel may be returned to restore the at least one second communication link. The invention can equally be applied to ISDN-systems as well as to mobile communication networks.