scope:

The present document specifies the procedures for establishing, maintaining and clearing of bearer connections to point-to-point multiconnection calls at the B-ISDN user-network interface. It specifies the essential features, procedures, and messages required for controlling bearer connections associated to point-to-point multiconnection calls in a functionally separated call and bearer control environment. The procedures specified by the present document are applicable at the interface between a B-ISDN terminal equipment and a B-ISDN public network (coincident S b and T b reference point) as well as at the interface between a B-ISDN customer network and a B-ISDN public network (i.e. at the T b reference point). The separated bearer control protocol defined by the present document is applicable to control bearers associated to a multiconnection call which is controlled independently by means of a separate call control protocol.