RESERVATION METHOD FOR DIGITAL DATA TRANSMISSION NETWORKS AND DATA SWITCHING CENTRE

The method involves reserving transmission capacities and selecting requests for data streams with different bandwidth to be transferred in digital data transmission networks with a maximum transmission rate, whereby a certain transmission capacity is available, which is smaller or equal to the maximum transmission rate, certain bandwidths or bandwidth groups use determined data transmission rates, and certain data transmission rates are reserved for certain bandwidths or bandwidth groups. A request for the transmission of data with a certain bandwidth or bandwidth group is only then accepted, if predetermined criteria are fulfilled with respect to the usage of the data network, only if the unused data transmission capacity after the acceptance of the transmission is larger or equal to the sum of the reserved data transmission rates with the exception of the reserved data transmission rate for the requesting bandwidth or bandwidth group.