Hello can someone tell me if these values below work in bypass media mode?

I read the wiki but I’m not sure 100% if these settings will reject t38. Do I need all 3 to reject a T.38?

<action application="set" data=" refuse_t38=true"/>

<action application="set" data="fax_enable_t38=false"/>

<action application="set" data="fax_enable_t38_request=false"/>