SpeechLoadGrammer load problem

[TinNguyen]

I want to use SpeechLoadGrammar to apply grammar for the response speech. I have watched an example for a grammar file like this:

#ABNF 1.0;
mode voice;
language en-US;
tag-format <semantics/1.0.2006>;


root $yesorno;


$yes = (yes $GARBAGE | yep | yeah | sure | correct) { out = "yes" };
$no = (no $GARBAGE | nope) {out = "no" };
$yesorno = ($yes | $no) { out=rules.latest() };

But when i used AGI to call Application SpeechLoadGrammar(“yesno,/etc/asterisk/grammars/yesno.gram”) then the result was:

{
code: "200"
result: "-1"
data: false
line: "200 result=-1"
}

result = -1 and asterisk couldn’t load this file.

Where did i do wrong and can you give me an example or a link. Thanks

[jcolp]

There is no built in speech recognition engine. It’s up to the engine to support grammars, and to support the given grammar format.