The crossword solution for the term SITE RING is EAR, which stands for Electronic Architecture Ring. This is a type of computer network that was developed in the 1970s by the U.S. Department of Defense. It was designed to allow computers to communicate with each other over long distances and was one of the first networks to use packet switching technology. The Site Ring was eventually replaced by the Internet, but it still serves as an important part of the history of computer networking.