| 摘要 |
A connection (Y) between a first network node (DXT) not comprising an intelligent network service switching function and a second network node (SSP) comprising an intelligent network service switching function is divided into at least two parallel buses (V1, V2, V3) for pretriggering an intelligent network service from the first network node (DXT). An intelligent-network-specific meaning is defined for each bus (V1, V2, V3). In addition, service data is maintained to indicate whether an intelligent network service is needed and to indicate, directly or indirectly, the bus to be used. When processing a call set-up request the first network node (DXT) uses the service data to check whether an intelligent network service is needed in the call and, if it is, the node sets up the call from the first network node to the second network node using a first bus indicated in the service data, the intelligent-network-specific meaning of the first bus being that intelligent network service is needed. |
