OpenSER + Freeradius accounting

Good Morning, I have some trouble accounting openser calls with freeradius. Calls are accounted, but only AcctSessionId / AcctUniqueId are stored in the database, UserName and Realm fields are empty! Any idea? Thanks My openser.cfg looklikes: # -- acc params (with radius )-- modparam("acc", "radius_config", "/etc/radiusclient-ng/radiusclient.conf") modparam("acc", "radius_flag", 1) modparam("acc", "radius_missed_flag", 2) modparam("acc", "early_media", 1) modparam("acc", "report_cancels", 1) modparam("acc", "detect_direction", 1) modparam("acc", "service_type", 15) # Radius service type used for accounting : 15 = (SIP) modparam("acc", "radius_extra", "Sip-Src-IP=$si; SIP-Method=$rm")