3 on the basis of the received emergency location request message the home wls creates a location query message using the ip address and forwards the location query message to the aaa server 4 the home aaa server maps the ip address to nai and provides a location query message including the nai to the visited aaa server 5 the visited aaa server forwards the location query message to the control anchor asn gw 6 the control anchor asn gw forwards the location query message to the serving asn gw 7 on the basis of the received location query message including the nai the serving asn gw creates a query response message including the bs id sector id and sends it to the control anchor asn gw 8 optionally the control anchor asn gw provides raw positioning data on the basis of the query response message preferably by initiating a triangulation measurement 9 the control anchor asn gw forwards the query response message including the bs id and optionally raw positioning data to the visited aaa server 10 the visited aaa server sends the query response message with the bs id and optionally raw positioning data to the visited wls 11 the visited wls provides location coordinates and optionally raw positioning data by a triangulation calculation or by a bs id to location mapping and creates an emergency location response message including the location coordinates 12 the visited wls forwards the emergency.