[Freeswitch-users] fax detection

Hi, is there any way to route fax calls according to the call capability? I mean .. if the fax call supports T.38 i'd like to route it to a T.38 capable gateway. All other fax calls (meaning inband) should be handled by FS/SpanDSP. Of course, I know that every fax call starts as a voice call and upon fax tone detection additional capabilities are being negotiated(T.38 or G711). Can it be done in early media, before the call is even answered? So, here the goal is to have a T.38 capable GW handling T.38 calls while SpanDSP handling T.30... Any chance to do that with FS?