Cisco Cisco Customer Voice Portal 8.0(1) Developer's Guide

value, <SLOT_ELEMENT_DATAX>,
nbestUtteranceX, and nbestInterpretationX.
Instead, the above will be logged as the field
name appended with the suffix
“_secureLogging” and with the value “*****”,
for example
nbestUtterance1_secureLogging,*****.

•

VXML 2.0-compliant browsers typically require top-level slot names in the grammar (inline or external) to match
the field-level slot attribute (if it exists) or the field name attribute, in order for the field name variable (and hence
the value element data) to be defined. For inline grammars, the Form element automatically generates the grammar
slot name to match the slot attribute (if available) or the field name. For custom grammars that are referenced from
an external source, the application designer needs to set 

 and 

 properly based on the slot

name returned by the grammar.

•

If a grammar returns different slots for different inputs or multiple slots per utterance, there are two ways to configure
the Form element to store this data:

–

Leave the 

 setting empty. The Form element will create element data named

“nbestInterpretationX” (where X is from 1 to the length of the n-best list) that contains a string that uses delimiters
“+” and “:” to separate the multiple slot names from their values. For example: “+Slot1:value1+Slot2:value2...”.
A developer would then need to parse this string in a subsequent element to obtain the different slot name and
value pairs.

–

Configure the 

 setting with the names for all the slots that can be returned. The Form

element will create a new set of n-best element data to store the recognition results for each slot listed in that
setting. The element data will be named as 

 (where SLOT_ELEMENT_DATA is a string

identical to the setting value and X is from 1 to the length of the n-best list). For example, if 

had two values city and state and there are three n-best results triggered, then six element data in the names of
city1, city2, city3, state1, state2, and state3 will be created to store each of the n-best values for the “city and state
slots. Note that if n-best processing is disabled by setting the maxnbest setting to 1, then only one interpretation
result will be returned per recognition and thereby only one element data per slot (city1 and state1) will be created.

Element Data

This stores the value of the VXML field name variable.

string

value

This stores the confidence score of the captured Form utterance. When
n-best recognition is enabled, this stores the confidence score of the top
hypothesis in the n-best list.

float

value_confidence

A separate set of element data stores the interpretation values for each
filled slot of captured n-best utterances. While the maximum number of

string

<SLOT_ELEMENT_DATA1>

<SLOT_ELEMENT_DATA2>

 values is equal to the 

 setting

value, the actual number of these values available is dependent on speech

…

recognition at runtime, where 

 holds the slot

Element Specifications for Cisco Unified CVP VXML Server and Cisco Unified Call Studio Release 8.0(1)