<link>
<link>
A <link>
element may have one or more grammars that are scoped to the element containing the <link>
. The <link>
element also allows you to implement a grammar within a root document that could be acted upon by your leaf documents.
Attributes
fetchaudio
The URI of the audio clip to play while the fetch is being done. If not specified, the fetchaudio property is used, and if that property is not set, no audio is played during the fetch.
The fetching of the audio clip is governed by the audiofetchhint, audiomaxage, audiomaxstale, and fetchtimeout properties in effect at the time of the fetch.
The playing of the audio clip is governed by the fetchaudiodelay, and fetchaudiominimum properties in effect at the time of the fetch.
fetchhint
This attribute is not supported.
fetchtimeout
(defaults to “fetchtimeout” global property value) The timeout for fetches. Must be specified with the appropriate time units (e.g., “120s” for 120 seconds).
maxage
(defaults to “documentmaxage” global property value) Tells the platform the maximum acceptable age, in seconds, of cached documents.
maxstale
(defaults to “documentmaxstale” global property value) Tells the platform the maximum acceptable staleness, in seconds, of expired cached documents.
next
The URI to go to. This URI is a document (perhaps with an anchor to specify the starting dialog) or a dialog in the current document (just a bare anchor).
expr
Like next
, except that the URI is dynamically determined by evaluating the given ECMAScript expression.
dtmf
The DTMF sequence for this link. It is equivalent to a simple DTMF <grammar> and DTMF properties to recognition of the sequence.
event
Specify an event to be thrown instead of specifying a next.
eventexpr
An ECMAScript expression evaluating to the name of the event to be thrown.
message
A message string providing additional context about the event being thrown. The message is available as the value of the variable “_message” within the scope of the catch element.
messageexpr
An ECMAScript expression evaluating to the message string.
Notes
Exactly one of “next”, “expr”, “event”, and “eventexpr” must be specified. Exactly one of “message” and “messageexpr” may be specified.
Example
The output of the above script would be:
Computer: Please enter a telephone number. Human: (enters DTMF-#) Computer: You have entered the pound key. This is a specific page that handles events for when the user enters the pound key.
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Parent Tags
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