asterisk users - Mar 2005 - Asterisk as gateway with oh323 channel to VOIP provider that can provide gateway or gatekeeper feature ?

Hi,

sorry for my h323 dumbness. VOIP provider terminates H323 calls - it can be 
used as gatekeeper or gateway (they claim so). What option and what setup is 
best to connect Asterisk to this provider ?

Any working examples ?

Thanks in advance,

regards,

Rob.