Enhanced IN call model and protocol for multipoint-multiconnection calls in B-ISDN

This paper deals with the call model and the intelligent network application protocol (INAP) for an intelligent network (IN) in the broadband-ISDN (B-ISDN). First, we discuss the requirements of a call model and the INAP for B-ISDN. We focus on the relationship with IN Capability Set 2 (CS-2), B-ISDN signalling capability, and service requirements. We then propose a call model that can handle a multiparty-multiconnection call. Our call model is based on the call model for IN CS-2, and reflects B-ISDN signalling capabilities. We also propose some INAP operations for the call model. With these INAP operations, service logic program instances (SLPIs) can be reported when parties or connections are added. SLPIs can also use these INAP operations to instruct call models to add connections and parties. Finally, we describe an example of an IN service that uses the call model and the INAP.