H323 trunk

Dear All,

Would you please help me how can I create a h323 trunk on my asterisk server. I am using asterisk version 1.8 with elastix 2.0.3.
Please help me out!

Regards,
Zahid Hasan

Actually I want to send call from my asterisk server to Quintum DX2030(configured as h323 GW)
Can anybody help me.