I am trying to find out if I could use freeswitch as a register server.  Freeswitch would actually be acting more like an SBC.  I would like to provide my users a domain or IP address to register with and have Freeswitch pass the registration request to my soft switch.  I read on the Freeswitch wiki that there is some SBC functionality but I did not find anything specific to my needs.  I would appreciate any suggestions or help.