IMIT 2 G 1325 VoiceXML For : Professor Gerald

Today VoiceXML is the standard scripting language for rendering web pages over the telephone. Developing costs of an interactive phone application have changed dramatically with the new markup language. VoiceXML builds on the basic concept and rules set by XML. Interactive applications contain synthesized speech, pre-recorded audio, grammars defining words that could be recognised, and DTMF key input. By saying something or pressing the keypad on the phone the user transitions between different pages. VoiceXML could be used in many different ways. You can integrate it with your web page, letting people access it through a phone. It is simple to create services such as booking a ticket or looking up when the bus leaves. It can be used to create a voicemail from your phone or having your regular e-mail be read to you. Some vendors of voice gateways even offer SMS add-ons. The neat thing is that VoiceXML works both with the traditional PSTN system and the new technology of Voice over IP (VoIP). This paper describes how VoiceXML is defined and how it works. It also contains a short discussion between the differences in SALT, Microsoft's voice language, and VoiceXML. We have tried to implement our own service and it is described in detail in chapter 6. Our conclusion is that VoiceXML is a great way to create voice-enabled applications. However the Text-To-Speech and speech recognition engines on the market have to be improved before they will be convenient for regular users to use.