This document describes the results achieved when simulating the timing rules of the Extended RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback, denoted AVPF. Unicast and multicast topologies are considered as well as several protocol and environment configurations. The results show that the timing rules result in better performance regarding feedback delay and still pr...

Although the five-axis machine tool presents excellent advantages of high-speed, -efficiency, and -precision machining complex curved surface parts (impeller blade), its actual motion demonstrates nonlinear principle error due to participation rotating axis. Traditional methods, such as linear interpolation, rotation center point (RTCP), optimization, can effectively control errors despite thei...

This document defines an Extensible Markup Language (XML) Schema for video fast update in a tightly controlled environment, developed by Microsoft, Polycom, Radvision and used by multiple vendors. This document describes a method that has been deployed in Session Initiation Protocol (SIP) based systems over the last three years and is being used across real-time interactive applications from di...

The Real-time Transport Protocol (RTP) is used in a large number of different application domains and environments. This heterogeneity implies that different security mechanisms are needed to provide services such as confidentiality, integrity, and source authentication of RTP and RTP Control Protocol (RTCP) packets suitable for the various environments. The range of solutions makes it difficul...

The impact of network failures can be minimized if users are promptly notified by appropriately designed applications. Specifically, for Voice-over-IP (VoIP) networks, an RTP/RTCP-based detection method can be used to rapidly distinguish between network congestion and network failures. Users and network managers can exploit this information in various ways, such as rapid network recovery or see...

The Real-time Transport Protocol (RTP) is used in a large number of different application domains and environments. This heterogeneity implies that different security mechanisms are needed to provide services such as confidentiality, integrity, and source authentication of RTP and RTP Control Protocol (RTCP) packets suitable for the various environments. The range of solutions makes it difficul...

Internet Drafts are draft documents valid for a maximum of six months. Internet Drafts may be updated, replaced, or obsoleted by other documents at any time. It is not appropriate to use Internet Drafts as reference material or to cite them other than as a ''working draft'' or ''work in progress.'' Please check the I-D abstract listing contained in each Internet Draft directory to learn the cur...

This memorandum is a revision of RFC 1889 in preparation for advancement from Proposed Standard to Draft Standard status. Readers are encouraged to use the PostScript form of this draft to see where changes from RFC 1889 are marked by change bars. This memorandum describes RTP, the real-time transport protocol. RTP provides end-to-end network transport functions suitable for applications transm...

The impact of multimedia traffic on the performance of networking applications is significant because the vast majority of currently available tools send data at a rate that does not depend on the state of the network. This is unlike rate-controlled applications, such as Transport Control Protocol-based (TCP) applications, which adjust their output rate and bandwidth requirements according to t...

The provision and support of new distributed multimedia services are of prime concern for telecommunications operators and suppliers. Clearly, the potential of the latest Internet protocols to contribute communications components is of considerable interest to them. In this paper we present three of the major new protocols introduced into the Internet environment to support real-time and multim...