I am trying to use an external dtmf grammar inside my vxml page. But some how the Avaya Voice Portal is not recognizing the caller input. Below is the vxml code, can someone please help with this.

<form id="example">
<grammar maxage="0" maxstale="0" src="http://tstsvr:8480/WalgreensTakeCare/grammar/en/RT_Menus_DTMF.grxml#RTStoreMenu" mode="DTMF" type="application/srgs+xml"/>
<block>
<prompt> I am inside the IVR and testing the Grammars</prompt>
</block>
<field name="MENU_CHOICE">
<filled>
<prompt> ... do customer transfer ... <value expr="MENU_CHOICE"/> </prompt>
</filled>
</field>
</form>

In Genesys environment if we have to use external dtmf grammar then we use com.genesyslab.dtmf.offboard_recognition=yes. But I am not sure what is the property name in Avaya. Please help.

You would need to take a look at the voice browser log and see if there is any error and what the error says.