I got the this error: radius_xlat: '122@domain.com' rlm_sql (sql): sql_set_user escaped user --> '122@domain.com' radius_xlat: 'VoIP_Radius '122@domain.com'' rlm_sql (sql): Reserving sql socket id: 16 radius_xlat: '' radius_xlat: 'VoIP_Radius '122@domain.com','', '','192.168.1.1',''' rlm_sql: Failed to create the pair: Unknown value VOIP for attribute Service-Type rlm_sql (sql): Error getting data from database radius_xlat: '' in mssql.conf file i have authorize_check_query = "VoIP_Radius '%{User-Name}'" authorize_reply_query = "VoIP_Radius '%{User-Name}','%{Calling-Station-Id}', \ '%{Called-Station-Id}','%{NAS-IP-Address}','%{h323-conf-id}','VOIP'" I don't know sql server really much and I'm starting learning freeradius, so can some one explain me how "authorize_check_query" and "authorize_reply_query" dialogue with ms sql server? then, "Failed to create the pair" means there was a problem to get data from database I think but more exactely what does the error say ? Thanks Giuseppe