Help needed to configure FreeRADIUS for eduroam

Hi, I am struggling to configure my FreeRADIUS server for eduroam (www.eduroam.org), as I understood that some subscribers have done the configuration successfully, I come here to get help. I have been running my FreeRADIUS server with out problem for several years, identifying to an openLdap backend. I managed to configure a test WiFi access point to identify with 802.1x against that same radius/ldap server. But I have a problem to configure eduroam, so I would be glad if I could see a working example. TIA, Olivier