Register H323 VOIP gateway at ASterisk IP PBX

Dear All,

I am trying to register D-link voip gateway[ DG-104SH ] on asterisk IP pbx. So far I have failed to get register it. The VOIP gateay only supports H.323.

My asterisk PBX version is 1.2.2.

Please be kind enough to guide me to How do i register the this VOIP gateway on Seterisk IP pbx.

Thanks & Regards,