Haldon J Sandick

Access architecture for a multiprotocol broadband backbone

We present a comprehensive architectural model of a modular communication infrastructure for providing interconnection between a wide variety of networks with like protocols across a common backbone network. Our concepts are demonstrated to be an appropriate framework for the provision of (a-)synchronous virtual channels, LAN interconnection, and standard internetworking, thus covering the most typical current connectivity requirements. The base architecture has been implemented, and first products are being offered with interfaces for Frame Relay, Fiber Channel Standard, ATM, voice and clear channel services.

Structure and use of signaling in B-ISDNs

Signaling in a communication network is the collection of procedures used to dynamically establish, maintain, and terminate connections, which require information exchange between the network users and the switching nodes, and, between switching nodes. This paper rewiews the UNI signaling architecture.

Access services for the Networking Broadband Services architecture

This paper describes how Networking BroadBand Services (NBBS) provides multiple protocol support over emerging high-bandwidth networks. It describes the problems associated with handling these multiple protocols that are seen now more than ever in the emerging asynchronous transfer mode (ATM) infrastructure. The paper addresses the access services of NBBS and how the NBBS transport functions are used to provide these access services. A detailed example of one access service component is given to provide the reader with a feeling for typical access services issues. Brief examples of access services are given to show how the concepts described are being used.

Enabling ATM networks

Asynchronous transfer mode (ATM) is the primary candidate technology for emerging high-speed networks. ATM standardization provides the basic framework for building ATM networks. Although the development of ATM standards and the availability of high-speed links in the network is essential, what really matters is how ATM networks are enabled so as to integrate different services with different traffic characteristics and service requirements. Two important contributions to this integration are the development of network control services complementing ATM standards while achieving high utilization of network resources and the efficient implementation of the ATM standards in the network. In this paper, we present a short overview of the current status of ATM standards, discuss how various control services that were developed in IBMs Networking BroadBand Services architecture complement the ATM standards, and provide an overview of various functions included in the architecture for their efficient implemen tation.