An atmSubnetworkTP represent the termination of an atmSubnetworkConnection or an atmLinkConnection on an atmSubnetwork. Each atmSubnetworkTP instance refers to a CTP object instance allowing a single representation of the network resources. That is, through the layers of subnetwork decomposition, the instances of atmSubnetworkTP at each layer all point to the same CTP object instance, thus representing the relationship among endpoints of composite subnetworks supported by the same network resource. An instance of atmSubnetworkTP is created by the managed system during the set-up of link connections and/or subnetwork connections. However, this does not preclude the pre- provisioning of atmSubnetworkTPs. The atmSubnetworkTP terminates atmSubnetworkConnections and atmLinkConnections and provides the capability to associate endpoints of composite subnetworks with the supporting network resource (CTP). In cases where the M4 NE view is also supported, the reflectedCTP attribute may point directly to an instance of the vcCTPBidirectional or vpCTPBidirectional object classes.
Sources for this description
ATM Forum M4 official network view CMIP specifications