In this paper we introduce a new approach for dealing with variable bit rate (VBR) compressed video streams, such as the ones transmitted by Video-OnDemand servers. Bit rate bursts are exhibited along multiple time scales during transmission, and are not fully captured in the VBR flow specifications for current QoS networks such as the Tenet Real Time Protocol Suite [1] and ATM policing compone...

Potentially large network delay variability experienced by voice packets when travelling over IP networks complicates the design of a robust voice conference bridge. Intrastream synchronization is required at the conference bridge to smooth out network delay jitter on a given stream and provide a continuous stream of voice packets to the conference bridge core. Interstream synchronization is ne...

Server-based scheduling of CAN has been proposed as a way of fair scheduling of the Controller Area Network (CAN). By separating streams of messages by using network access servers (N-Servers), scheduling is performed at three layers where native CAN message arbitration is the scheduling at the lowest level. On top of this is the server-based scheduling to separate different streams of messages...

Multicast real-time streams assume in general the shape of a tree where the source is the root and the receivers are the leaves. Many common networked multimedia applications need to create a large number of such streams to connect the end-peers one to each other. Often, relationships among the streams created by the same or related applications exist. Being able to express these relationships ...

MobiWeb is a proxy-based network architecture designed to enhance the performance of adaptive real-time streams over 3G wireless links. MobiWeb includes a priority scheme that preserves media smoothness despite short-term fluctuations of the link, as well as an adaptation mechanism applied to streams responding to long-term link changes and handoffs. A set of timers permits the rapid exploratio...

Nowadays, multimedia content has become the major content transferred on computer networks. Since the distribution of non-realtime (so called offline) multimedia content does not have special demands on the computer network infrastructure used, the realtime multimedia streams requirements differ from the offline ones’ requirements a lot. Realtime streams usually require stable and sometimes qui...

The Lincoln Laboratory Malicious Code Detector (LIMACODE) is a system for statically detecting privilege-escalating exploits in data streams, such as files and network traffic. LIMACODE operates as follows: it scans data streams, identifies the language of the stream, then extracts language-specific features for input to a feed-forward neural network classifier which labels the stream as either...

Traditional teleconferencing uses a select-and-mix function at a centralized conferencing bridge. In VoIP environments, this mixing operation can lead to speech degradation when using high compression speech codecs due to tandem encodings and coding of multi-talker signals. A tandem-free architecture can eliminate tandem encodings and preserve speech quality. VoIP conference bridges must also c...

We evaluate MobiWeb, a proxy-based network architecture designed to enhance the performance of adaptive real-time streams over wireless Internet links. MobiWeb includes a priority scheme that preserves media smoothness despite short-term fluctuations of the link, as well as an adaptation mechanism applied to streams responding to longterm link changes. A set of timers permits the rapid explorat...

When an ad hoc network is to be used in a disaster situation, it is likely that emergency information will be broadcast by voice streaming from a small number of nodes. Conventionally, simple flooding (SF) has been used as a method of broadcasting streams to the entire network. However, if SF is applied to information flows in which packets are generated at a high rate, as is the case with voic...