[Freeswitch-users] Door intercom/gate controller

Hi list, I have a gate controller that only understands RFC 2833 but it calls endpoints that can only provide inband DTMF, I can't seem to get the digits recognised by the gate controller to trigger the relay using start_dtmf_generate, as they are coming back to the a-leg? Rather than out the b-leg.. It works fine when I call a SPA502g as it will provide RFC 2833.. is there some trickery I can achieve this? Or am I just doing it wrong?? J