<assign>

Assign a variable a value

Implemented as defined in VoiceXML 2.0.

<audio>

Play an audio clip within a prompt

The VoiceXML interpreter processes audio content so that only text is sent to the TTS engine; pre-recorded audio is played by the telephony hardware. For more information, see <audio> Element.

<block>

A container of (non-interactive) executable code

Implemented as defined in VoiceXML 2.0.

<break>

Control the pausing or other prosodic boundaries between words

Implemented as defined in VoiceXML 2.0.

<catch>

Catch an event

Implemented as defined in VoiceXML 2.0.

<choice>

Define a menu item or specify a speech or DTMF grammar,

Up to 100 <choice> tags are supported for each menu.

Exactly one of "next", "expr", "event" or "eventexpr" must be specified; otherwise, an error.badfetch event is thrown.

Exactly one of "message" or "messageexpr" may be specified; otherwise, an error.badfetch event is thrown.

<clear>

Clear one or more form item variables

Implemented as defined in VoiceXML 2.0

<data>

Allows a VoiceXML application to fetch XML data from a document server without transitioning to a new VoiceXML document

New in VoiceXML 2.1

A Java system property – vocalos.vxml.data.access_control.allow – can be set to configure the default behavior if the returned XML content does not contain the access-control XML processing instruction. See <data> Element.

<disconnect>

Disconnect a session

The namelist values are passed to the TEP implementation for further processing. Upon processing of <disconnect/> the prompt queue will be flushed before sending the hangup command to the TEP.

<else>

Used in <if> elements

Implemented as defined in VoiceXML 2.0.

<elseif>

Used in <if> elements

Implemented as defined in VoiceXML 2.0.

<enumerate>

Shorthand for enumerating the choices in a menu. An automatically generated description of the choices available to the user.

Implemented as defined in VoiceXML 2.0.

<enumerate> specifies a template that is applied to each choice in the order they appear in the menu.

If it is used with no content, the VoiceXML interpreter uses the following template:

Enter "dtmf-digit" for "text"

<error>

Catch an error event

Implemented as defined in VoiceXML 2.0.

An abbreviation for <catch event="error"> element

<exit>

Exit a session and returns control to the interpreter context which determines what to do next

The namelist values are passed to the TEP implementation for further processing. Upon processing the </exit> the prompt queue will be flushed before sending the hangup command to the TEP.

<field>

Declares an input field in a form – an input to be gathered from the user

Implemented as defined in VoiceXML 2.0

<filled>

An action executed when fields are filled

Implemented as defined in VoiceXML 2.0

<foreach>

Allows a VoiceXML application to iterate through an ECMAScript array and to execute the content contained within the <foreach> element for each item in the array

New in VoiceXML 2.1

Implemented as defined in VoiceXML 2.1

<form>

A dialog for presenting information and collecting data

Implemented as defined in VoiceXML 2.0

<goto>

Go to another dialog in the same or different document

Implemented as defined in VoiceXML 2.0

<grammar>

Specify a speech recognition or DTMF grammar

Implemented as defined in VoiceXML 2.0

<help>

Catch a help event

Implemented as defined in VoiceXML 2.0.

An abbreviation for <catch event="help"> element

Grammars generated for all system level prompts such as "help" and "exit" are generated in US English only.

<if>

Simple conditional logic

Implemented as defined in VoiceXML 2.0

<initial>

Declares initial logic upon entry into a (mixed initiative) form

Implemented as defined in VoiceXML 2.0

<link>

Specify a transition common to all dialogs in the link's scope

Implemented as defined in VoiceXML 2.0

<log>

Generate a debug message

Implemented as defined in VoiceXML 2.0

An application can log the content of the log tag to a Log4J category. For more information, see <log> Element.

For SpeechWorks OSR, any log tag starting with SWI will be logged to the SPWK log.

<menu>

A dialog for choosing amongst alternative destinations

Implemented as defined in VoiceXML 2.0

<meta>

Define a metadata item as a name/value pair

The following meta properties are supported:

n Expires (http-equiv)

n Pragma (http-equiv)

n Cache-Control (http-equiv)

For more information, see <meta> Element.

<metadata>

Define metadata information using a metadata schema

This element is supported, but not used by the Vocalocity Voice Browser.

<noinput>

Catch a noinput event

Implemented as defined in VoiceXML 2.0

An abbreviation for <catch event="noinput"> element

<nomatch>

Catch a nomatch event

Implemented as defined in VoiceXML 2.0

An abbreviation for <catch event="nomatch"> element

<object>

Interact with a custom extension

Use the Vocalocity Object API to register a custom object implementation.

If you use this tag without registering the object, an error.object.notsupported event will be thrown.

<option>

Specify an option in a <field>

Implemented as defined in VoiceXML 2.0

<param>

Parameter in <object> or <subdialog>

Implemented as defined in VoiceXML 2.0

<prompt>

Queue speech synthesis and audio output to the user

The attribute bargeintype is not supported.

Recognition-based bargein is not currently supported. Regardless of the value of the bargeintype attribute, the browser will always use energy.

For information about bargein support, see Bargein .

<property>

Control implementation platform settings (such as recognition process, timeouts, caching policy, etc.)

The Vocalocity Voice Browser sets default properties, if not specified by <property>. For more information, see Vocalocity Property Defaults.

<record>

Record an audio sample

The timeout attribute is ignored (the VoiceXML interpreter will not throw a <noinput> event if timeout is exceeded before recording begins).

Use finalsilence attribute to set interval that indicates end of speech to record.

<reprompt>

Play a field prompt when a field is re-visited after an event

Implemented as defined in VoiceXML 2.0

<return>

End execution of a subdialog and return control and data to the calling dialog

Implemented as defined in VoiceXML 2.0

<script>

Specify a block of ECMAScript client-side scripting logic

Implemented as defined in VoiceXML 2.0

If not specified, the default encoding is UTF-8.

For additional information about ECMAScript usage, see ECMAScript.

<subdialog>

Invoke another dialog as a subdialog of the current one

Implemented as defined in VoiceXML 2.0

<submit>

Submit values to a document server

When submitting a variable that contains recorded content, the browser will use the value of "multipart/form-data" for the enctype attribute, regardless of what is supplied by the application.

<throw>

Throw an event

Implemented as defined in VoiceXML 2.0

<transfer>

Transfer the caller to another destination

The Vocalocity Voice Browser supports:

n Bridge transfer (bridge="true")

n Blind transfer (bridge="false")

The default is blind.

Hot word transfer cancellation is not supported.

The transferaudio attribute is not supported.

<value>

Insert the value of an expression in a prompt

Implemented as defined in VoiceXML 2.0

<var>

Declare a variable

Implemented as defined in VoiceXML 2.0

<vxml>

Top-level element in each VoiceXML document

Implemented as defined in VoiceXML 2.0

Required attributes:

n version="2.0" (for VoiceXML 2.0)

n xmlns=http://www.w3.org/2001/vxml