VXML is a W3C standard that allows voice-based interaction between human-users and computers applications. VXML can be used for applications and systems such as Auto-Attendant, voicemail or IVR, with VXML scripts performing functions such as playing prompts, collecting user input (DTMF and speech) and routing calls. VXML scripts can perform IVR functions similar to TCL scripts, the major difference is that whereas TCL scripts are usually device memory resident or downloadable from a TFTP Server. VXML scripts are usually interpreted by a voice browser after they are downloaded from a web server using http request (client/server model)

CRS is supporting VXML 2.0 applications