VoiceXML Technology: Benefits and Limitations

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VoiceXML is the W3C’s standard XML format for creating interactive voice applications that can be accessed over the phone. It could be described as a markup language used for scripting interactive dialogues between humans and computers. It is like HTML, the only difference is that while HTML uses a graphical user interface to access information VoiceXML uses an audio interface where speech and keypad tones replaces the screen, keyboard and mouse (Hampton, 2001, para.1). The basic elements for interaction are speech and Dual-tone multi-frequency (DTMF) signalling with telephone keypads. The computer uses spoken prompts to evoke responses from the user in a sequential and linear manner and the user is meant to respond using a finite set of vocabularies in every dialogue.
Despite the potentials and capabilities of interactive voice applications, the technology is far from reaching its potentials. The reason for this problem is that they are prone to errors because of the lack of tools and methodology for the construction of practical and suitable frameworks. In the past, developing voi…

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