VoiceXML elements are the functional units of any VoiceXML program. They are classified into different items namely form items, field items, input items and control items.
Variables: Variables declared in VoiceXML are similar to the ECMAScript/JavaScript with slight differences. Undefined, null, boolean, string, number and object are the 6 major types of variables. Variables cannot begin with “_” as variables beginning with this are used internally.
Scope of the variables: The scope of the variable depends on the place where they are declared. Variables can be declared in any of the following scopes:
|
SCOPE |
DESCRIPTION |
|
session |
Based on platform used and are available across a particular session. |
|
application |
Children of vxml of root document. Available to all documents specified in the root |
|
document |
Declared in vxml of the document. Available only to that document |
|
dialog |
Declared within the dialog (form/menu) |
|
anonymous |
Declared within the form items like field, block catch. |
The list on the left includes different VoiceXML elements supported by AsterUVX. Anyone can develop VoiceXML-based voice applications utilizing these elements. Once you have created your application, test it for free on SoftSyl's AsterUVX platform.