The system for mass data collection with cumulative acknowledge is described in this paper. A server message for cumulative acknowledgement is specified. The system is development for single source multicast networks. These networks are characterized by the ability to communicate with concrete network nodes. The groups of nodes are possible to create in these networks. It makes these networks more efficient than the any source multicast networks. The purpose of the first part is to design and describe the system. In the next part are the possible process mechanism discussed. The authors also introduce an initialization, synchronization and the message transfers. In last part, they discuss a future work.