IP is the basic protocol in the Internet. The authors explore a variety of possibilities to adapt the wireless environment to that of IP. They describe the requirements and show how these can be accommodated by using the existing IP. At the heart of the problem is the lack of a capability in the current IP routing services to track topological changes. Several alternatives are described, each making use of a different combination of the addressing and routing features offered by IP. The alternatives are compared. The tradeoffs among these alternatives are explored.>

A computer-based experimental multimedia mail system that allows the user to read, create, edit, send, and receive messages containing text, images, and voice is discussed.

A computer-based message system (CBMS) consists of computer facilities that expedite the creation, management, and nonreal time distribution of messages. These systems are increasingly being used for formal and informal communication, supporting the distribution of textual messages. However, nontext media such as voice and graphics are very important for human interaction, and are becoming more and more important in computer system applications. As a result, there is a growing need for the support of media other than text in CBMS.Before standards for multimedia CBMS can be implemented, there are many technical issues that must be addressed. These range from the design of new mechanisms for the distribution of multimedia mail, to the design of tools needed for editing nontext media. This panel will be discussing issues encountered in the development of multimedia CBMS and an outlook for standards for multimedia computer mail.

The motivation for interconnecting networks is to provide one or more consistent services to the set of users of the interconnected networks. To provide these services either new end-to-end service protocols must be defined or the service protocols of the individual networks must be made to interwork. In either case the issues of addressing, routing, buffering, flow control, error control, and security must be considered. Two examples of interconnection strategy are examined: the interconnection of X.25 networks, and the interconnection of ARPA research networks. The models for interconnection of networks and the role of internetwork protocols are discussed.

The notion of protocol multiplexing usually means the ability of a protocol to accommodate several instances of higher level protocols at the same time.

The focus of this paper is the provision of computer-aided message services between users of computers in a multinetwork environment. An assembly of interconnected networks is called an internetwork. The task at hand is to provide an internetwork computer message service.

The protocol discussed in this paper was developed by many members of the ARPANET community starting in 1969 and continuing through the present. Many individuals and institutions have been members of this community at one time or another over the years. A review of the documents, both working and published, written on the subject of this protocol reveals that the following individuals were among those who contributed to the protocol design: A. Bhushan, R. Braden, R. Bressler, J. Burchfiel, S. Carr, V. Cerf, B. Cosell, D. Crocker, S. Crocker, W. Crowther, J. Davidson, D. Dodds, W. Duvall, G. Grossman, R. Gumpertz, W. Hathaway, W. Kantrowitz, R. Long, J. McConnell, A. McKenzie, R. Merryman, J. Melvin, R. Metcalfe, E. Meyer, N. Mimno, L. Nelson, T. O'Sullivan, M. Padlipsky, K. Pogran, J. Postel, M. Reese, J. Rulifson. R. Schantz, R. Thomas, R. Tomlinson, D. Walden, R. Watson, D. Wells, J. Winett, and S. Wolfe. No doubt others also contributed to the design and dozens of other individuals contributed to the many implementations of the protocol. We acknowledge all of their contributions. Many of the above named individuals were offered an opportunity to collaborate on the writing of this paper. The authors are those who responded. We apologize for the oversight to any individual who would have liked to help write this paper but was not apprised of the opportunity.

Host-to-host protocols capable of supporting internetworking and reliable transmission have been under development for several years. This paper discusses problems and techniques related to one type of reliable protocol, which features end-to-end positive acknowledgement, retransmission, internetwork addressing capabilities, and ordered delivery.