An interaction mode specifies the type of interaction the speech port is to having with a user. An interaction mode can be voice or DTMF.
In a grammar, you specify whether the grammar will be used in a DTMF interaction, or a voice interaction. When grammars are activated in a speech port, only the voice grammars get used to decode speech, and only the DTMF grammars get used to process a DTMF string.
To specify the interaction mode in a grammar, use the following syntax:
mode voice;
or
mode dtmf;
<grammar mode="voice" ...>
or
<grammar mode="dtmf" ...>
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