SSML is a W3C standard for speech synthesis markup, that is used in VoiceXML and other IVR / speech platforms.

The Speech Synthesis Markup Language SSML Specification is designed to provide a rich, XML-based markup language for assisting the generation of synthetic speech in Web and other applications. The essential role of the markup language is to provide authors of synthesizable content a standard way to control aspects of speech such as pronunciation, volume, pitch, rate, etc. across different synthesis-capable platforms.

See also

• SSML MRCP Server IEC - SIP/2.0+VXML 2.0 Inexpensive IVR Platform with TTS, SSML MRCP ASR/TTS Client/Server, Linux/Windows, Call Analysis, Bulk Call Generator, more ... Free Trial Download.
• Database Systems Corp. Text To Speech converter for IVR and voice broadcasting applications.