Internet services like the world-wide web and applications like News-on-Demand have become very popular over the last years. The number of users, as well as the amount of multimedia data downloaded by each user from servers in the Internet, is rapidly increasing. In this context, the potentially (very) high number of concurrent users that retrieve data from servers represents a generic problem. In the Intermediate Storage Node Concept (INSTANCE) project, we develop a radically new architecture for Media-on-Demand servers that maximizes the number of concurrent clients a single server can support. Traditional bottlenecks, like copy operations, multiple copies of the same data element in main memory, and checksum calculations in communication protocols are avoided by applying three orthogonal techniques: zero-copy-one-copy memory architecture, integrated error management, and network level framing. In this paper, we describe the design of the network level framing concept, that enables us to reduce the server workload by reducing the number of operations performed by the communication system at transmission time. 1