Management and Delivery of Multimedia Tra c

{ We propose a scheme for the establishment of multimedia delivery channels in WAN environments that support the timing and reliability requirements of multimedia applications while allowing for better utilization of the network bandwidth. These virtual, end-to-end channels from sources to destination consist of multiple segments that (a) have a resource reservation scheme that is able to issue guarantees of timeliness and reliability; (b) support traac splitting to cope with limited bandwidth and reduce contention; (c) consider data processing and transformation requirements at speciic, intermediate sites; (d) ooer alternative paths for fault tolerance and reliability.