VoiceXML properties

VoiceXML properties are set using the <property> element. You can set properties either by specifying them explicitly (using the name and value attributes) or by specifying a context file (using the src or srcexpr attribute).

This table lists the VoiceXML properties that Voice Platform supports and specifies whether they are allowed or disallowed in context files.

Note: You cannot embed disallowed properties in the context file. (Embeddable properties are the properties whose values can be calculated dynamically using scripts.)

Type	Property	Allowed in context file
Voice Platform service properties	All application-settable service properties	Allowed
Speech recognition properties	confidencelevel	Allowed
	sensitivity	Allowed
	speedvsaccuracy	Allowed
	completetimeout	Allowed
	incompletetimeout	Allowed
	maxspeechtimeout	Allowed
	nuance.exposerecording	Allowed
	nuance.maskrecognitionlatency	Allowed
	recordutterance	Allowed
	recordutterancetype	Allowed
DTMF properties	interdigittimeout	Allowed
	termtimeout	Allowed
	termchar	Allowed
Prompt and collect properties	bargein	Disallowed
	bargeintype	Disallowed
	timeout	Allowed
Resource fetching properties	audiofetchhint	Disallowed
	audiomaxage	Disallowed
	audiomaxstale	Disallowed
	contextfetchhint	Disallowed
	contextmaxage	Disallowed
	contextmaxstale	Disallowed
	datafetchhint	Disallowed
	datamaxage	Disallowed
	datamaxstale	Disallowed
	documentfetchhint	Disallowed
	documentmaxage	Disallowed
	documentmaxstale	Disallowed
	fetchaudio	Disallowed
	fetchaudiodelay	Allowed
	fetchaudiominimum	Disallowed
	fetchtimeout	Disallowed
	grammarfetchhint	Ignored
	grammarmaxage	Disallowed
	grammarmaxstale	Disallowed
	nuance.fetchaudiointerval	Disallowed
	Resource fetching properties	Disallowed
	scriptmaxage	Disallowed
	scriptmaxstale	Disallowed
Grammar and natural language processing properties	universals	Allowed
	maxnbest	Allowed
		Allowed
Miscellaneous properties	inputmodes	Allowed
	nuance.core.tss.outbound.aai	Disallowed
	nuance.grammarlabel	Discouraged
	nuance.eventcountergroup	Allowed

VoiceXML properties

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