TRANSFER OF USSD MESSAGES TO/FROM USSD EXTERNAL NODE

摘要

Method for providing USSD message transmission in a telecommunications system between a first network element (10; 1) and a second network element (1; 10). The first and second network element (10; 1) are forming part of or being connected to an originating telecommunications network (2; 11; 20), respectively a recipient telecommunications network (11; 20; 2). The method comprises the steps of obtaining routing data of the second network element (1; 10) in the recipient telecommunications network (11; 20; 2) using HLR interrogation with MAP_SEND_ROUTING_INFORMATION signalling messages, and forwarding the USSD messages from the first network element (10; 1) to the second network element (1; 10) using the obtained routing data. The communication can be initiated by either an application on an USSD external node or a mobile subscriber device as the first network element (10; 1).