As part of its work on the Heidelberg Transport System (HeiTS) for multimedia communication, the IBM European Networking Center (ENC) has implemented the Experimental Internet Stream Protocol, Version 2 (ST-II). ST-II is a connection-oriented internetworking protocol for multiple-destination communication of real-time data such as digital audio and video. Although ST-II fits well into typical multimedia application scenarios, some functions are still missing No mechanisms are provided for receiver-initiated communication, allowing receivers to join streams, specify their quality of service (QOS) requirements, or initiate stream establishment and resource reservation. In this paper, we present some extensions to tile protocol that make it fulfill the receivers' needs move adequately. Our approach allows intermediate nodes to execute stream management functions on behalf of the sender. This way, the protocol scales better with the number of receivers per stream, as the origin does not need to track every target.