This paper proposes an implementation of the Telecommunications Information Networking Architecture (TINA) connection management system, based on our involvement of The TINA Trial (TTT). The system is used for managing ATM networks, which consist of network elements with SNMP interfaces. It provides setup, configuration, and release of ATM connection with a GUI-based network design tool that generates network resource data used for deploying TINA software components. This paper reports on a method of implementing TINA components over a Distributed Processing Environment (DPE) and an effective way to manage computational objects with multiple interfaces by using the Trading Service.

As the telecommunications network evolves to provide a greater variety of services and incorporate new technologies under the increasing multi-vendor environment, it has become important to ensure that the network evolves gracefully. As part of the endeavor to ensure this graceful evolution, Nodal System Architecture has been studied and applied. It aims to standardize the interface between communications systems, called modules in the Architecture, located in the same building. This paper describes the requirements that are considered in specifying Nodal System Architecture. Namely, the paper describes the classification of network functionality for determining functions allocation to modules, and the needs for defining the conditions for being a module, and estimates the volumes of three types of information that flow through inter-module interfaces for determining the protocol structure to be used for each type of information. Finally, the paper presents examples of inter-module links for different node sizes.

This letter shows an architectural approach for analyzing real-time aspects of distributed multimedia processing systems. The results of this letter are 1) to propose the concept real-time supporting environments which consist of real-time traffic management/control environment and real-time application environment and 2) to analyze the real-time requirements of such environments.

As the telecommunications network provides a greater variety of services and more rapidly incorporates new technologies, it has become important to ensure modular functional growth of the network. As a part of the endeavor toward this goal, this paper discusses the functional architecture of a network, which defines the functional elements and the interfaces between them. Object-oriented paradigm is applied to develop this architecture. Because the objects which will be made in the software will become too numerous to manage, it is proposed to make a functional element out of a set of objects, grouped together on the basis of functional affinity, plus an interface object. A functional element communicates with other functional elements only via its interface object. The physical location of each functional element can be hidden from other functional elements by the support of distributed processing environment. To secure real-time performance, communications between functional elements are classified into two classes: direct and indirect communications. In order to examine technical feasibility an evaluate the various alternatives of functional architecture, and experimental system called EONS (Experimental Object-oriented Nodal System) was developed. The hardware equipment of EONS consists of a switching unit and workstations. The functional architecture implemented in the EONS is structured in two layers: hardware-independent, logical control layer and hardware-dependent, resource control layer. As an example of service application, universal personal telecommunication (UPT) service has been implemented.