Asterisk & H323

I have three laptops, two SIP clients and my * server (FC9), I have successfully configured SIP to communicate via X-Lite soft phones, and am interested in doing further testing with H323. I attempted to setup the H323.conf similar to my SIP.conf and been unsuccessful in sending or receiving H323 data. I followed the instructions provided with the default H323.conf. Has anyone had similar issues or can recommend a proper way to configure asterisk to work with H323? Thank you very much.