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Type of feature
Barge-in is a base feature.
About the barge-in feature
With barge-in, also called "allow interrupt" or "recognize during prompt," callers can interrupt or barge in during voice prompts by speaking. Speech recognition accepts either speech or touchtone input in response to a prompt. Barge-in operates for speech much like the talk off option does for touchtone input, where a caller can interrupt the prompt by pressing a touchtone key on the telephone keypad. In the IR R2.0, the provision to enable selective barge-in has been introduced in the VoiceXML interpreter. Selective barge-in enables a response to pre-defined hotwords in the speech proxy of a speech recognition server.
Hardware requirements
The Avaya IR system supports barge-in using echo cancellation supplied by the telephony cards.
Software requirements
Barge-in (including selective-barge-in) are installed as part of the IR Base System package (AVir). For more information, see Interactive Response Base System package.
Application development considerations
In IVR Designer applications, barge-in can be enabled for prompts in voice applications by setting the Allow Interrupt field to True in the Response tab of the Menu node, the Prompt and Collect node, or the Automenu node. Barge-in is not currently supported for use with the Dial Pulse Recognition (DPR) feature. In IVR Designer applications, selective barge-in can be enabled for VoiceXML applications, by qualifying all prompts with the attribute "bargeintype = hotword".
Note: For selective barge-in to be enabled,:
The speech server used should support selective barge-in. At present, Scansoft and IBM are the only vendors that support selective barge-in.
The prompts need to be bargeable. This can be achieved using the attribute "bargein=true".
