Specification and implementation of an enhanced RTP translator with dynamic configuration features

This thesis deals with the design and implementation of an enhanced RTP Translator that can be used for realtime data rate and/or encoding format transcoding of audio streams in IP-(Multicast) networks. It is embedded in the KISS 1 Concept as a Service Agent and thus uses the KISS-API's features to dynamically adapt its offered services to the users's needs. The so-called Audio Transcoder is typically deployed to lower the data rate of an existing audio stream if a listener is unable to receive the original stream because of its limited bandwidth. In a current MBone scenario such a listener would be kept out from participation. This approach offers the possibility to provide a session with a high quality and therefore high data rate stream that can be received by users on a high bandwidth network while users on a low bandwidth network are provided with a separate low(er) data rate stream, transparently. This publication is the English release of the author's "Diplomarbeit" handed in in February 1998 at the Fachhochschule Köln [16]. This work was embedded in the MOD 2 project of the Research Group on Interactive Broadcast Systems at the German National Research Center for Information Technology, Institute for Media Communication (GMD-IMK.IBS). For additional information about KISS you might give our web site 3 a try.