His best known invention is the token ring which forms the basis for several international standards in data communications.

Token Ring is also available as an optional module.

Ethernet replaced token ring, and went on to become the dominant networking model in use today.

In the end, Token Ring would not ship until October 1985.

Token Ring provides prioritized access and has a low message delay, however, its data transmission is unreliable.

The devices can be connected in a ring much like Token Ring.

"Token Ring is an example of a ring topology."

This scheme was simpler than the competing token ring or token bus technologies.

It also connects into Ethernet networks, and Token Ring will be available by the end of the year.

In addition, the topology of Token Ring results in high wiring installation and cost.