The Space Telematics Domain consists of the communications protocols by
which the applications of the Space Informatics
Domain exchange information.
It is assumed that nearly all ground communications are commercially based, with more specialized protocols
being employed when crossing into space regions. Typically, the Telematics domain is concerned primarily
with how data units are moved from place to place rather than how they are converted into user information within the
applications. The Telematics domain is the "space analog" of the communications networks by which the
Web applications exchange information over the terrestrial Internet.