Device and method for the management of multicast calls for broadcast audio and video services in a local ATM node

摘要

A device and a method for the management of multicast calls through broadband ATM network. Said device including a control unit connected to a service bus and to a cell replication unit set up by a plurality of replication units (DM), all of them equal and comprising: a central buffer (CELL_BUFFER) for the storage of the ATM cells of which at least one copy has to be made; selection means (SEL_TAB) set up by a number of locations equal to the number of customers abutting on the output ATM link; a service block (SERVICE_BLOCK) containing data related to the number of ATM cell copies to be transmitted towards the customers abutting on said casting subunit (DM); means (SYNC_OUT, CELL_COMPILING) for the addition of virtual path data to the cells stored in said central buffer (CELL_BUFFER).