EARN main role was also to coordinate the network activities and connections of the various European Countries connected to it, and the connections to the other peer networks worldwide (in the US,  Canada, and Japan). EARN Therefore organized and coordinated a number of technical groups, initially via a unique group named EARNTECH, and afterward via e set of smaller and specialized permanent working groups, namely: the EARN NOG (Network Operations Group) with one engineer representative for each member country, in charge of the network operations, and the EARN INFO (Information Services) in charge of end-user documentation. A number of ad-hoc working groups were also created, as short term working groups, to solve specific problems, such as the EARN-PEG (Performance Evaluation Group) and the EARN Routing Project Group (to solve routing issues). This EARN Board document 89BOD31.89 describes the working groups organization.