Connect Hypermedia HG4000 as a trunk for asterisk

I need to setup an Hypermedia HG4000 gsm sim gateway as a trunk for asterisk You will receive access to a fresh instalation of asterisk + freepbx and remote acces to the Hypermedia gateway. I need to create two groups of sims in the HG4000, each group will terminate diferent kind of calls. HG4000 is H323 only. Also need to make h323 trunk(s) in asterisk. Also need to send a simple step by step description for the configuration Budget range is set only as requisite. All proposal will be considerated.