Hi I use this line many years in the preacct_users file ( freeradius 2.1.X ) DEFAULT Called-Station-Id == "orangewap" Called-Station-Id := "%{Called-Station-Id}.%{3GPP-SGSN-Address}" It`s not work in freeradius-2.2.0, i got error message [files] preproxy_users: Matched entry DEFAULT at line 39 [files] WARNING: Unknown module "3GPP-SGSN-Address" in string expansion "%" ++[files] returns ok Peter Balšianok