Interactive multimedia module into danger alert communication system

This paper discusses the transmitting video calls and the use of the Voice Extensible Markup Language (VoiceXML, VXML) to create a complex multimedia menu in danger alert communication system. The system was created as a part of research at Department of Telecommunications at the VSB - Technical University of Ostrava. Creating a multimedia menu provides end-users more information about the impending danger as well as instructions on how to behave in a given situation. If users receive a pre-recorded warning message in the form of a phone call, it will provide a telephone number on which they can obtain more information, both audio and video. In order to achieve the desired functionality, we had to use open-source PBX Asterisk, the VoiceGlue package which features both the VoiceXML interpreter and the Text-to-Speech (TTS) module and FFmpeg for streaming video content.