Service control for heterogeneous telecommunication system having radio controller detecting transfer and where second sub system communication blocked change service allowing communication

摘要

The communications service control has a base station, a network radio controller (11) and a switch (12). A first mobile telephone (1) communicates with a second (2). Detection takes place at the radio controller of the communications transfer to the base station. The central switch is then informed of the transfer. If the second sub system cannot communicate following the first sub system, a change of service is set to allow communication.