o-end datagram service such as UDP. Thus, the main function of SCTP amounts to reliable transfer of user datagrams between peer SCTP users. It performs this service within the context of an association between SCTP nodes, where APIs exist at the boundaries. SCTP has connection-oriented characteristics but with broad concept. It provides means for each SCTP endpoint to provide the other during association startup with a list of transport addresses (e.g. address/UDP port combinations) by which that endpoint can be reached and from which it will originate messages. The association carries transfers over all possible source/destination combinations, which may be generated from two end lists. As result SCTP offers the following services: application-level segmentation; acknowledged error-free non-duplicated transfer of user data; sequenced delivery of user datagrams within multiple streams; enhanced reliability through support of multi-homing at either or both ends of the association; optional multiplexing of user datagram into SCTP datagrams. 6.4.2 Streaming Streaming implies transmitting information continuously in streams. This technique facilitates Internet browsing by allowing displays even before the completion of infor- mation transfer. It has higher tolerance for jitter to support the large asymmetry of Internet applications. Through buffering, the streaming technique smoothes out packet traffic and offers it as it becomes available. Thus, it can support video on demand as well as web broadcast. While both types of video applications can benefit from the same video compression technologies, they differ in the usage of coding, protocols, etc. Thus, we can offer two types of video applications and address or offer services to more than one type of user depending on the transmission rate or delay sensitivity. The UMTS Network and Radio Access Technology 6.4.3 Interactive Logically, we denote interactive to be the dynamic exchange of information through a man-machine interface or machine-to-machine interconnection