The OpenURL Router provides a central registry of institutions' OpenURL resolvers. An institution registers details of its resolver at openurl.ac.uk, making the information available to online service providers (OSPs). OSPs can use that information to provide users from a registered institution with links that are resolved by the correct institution's OpenURL resolver. 

An institution can indicate any changes in its OpenURL resolver by revising its entry in the registry which makes those changes known to all of the OSPs using the registry. The OpenURL Router is useful to institutions also with regard to online services that do not use the Registry. The institution can configure links to those services manually, using the OpenURL Router as the base URL.   This means that when changes are made to the Institution's OpenURL Resolver the new resolver details can be updated once on the OpenURL Router, avoiding the need to manually update all the individual links for every service provider. 

Note that as this is a middleware service, and The University of Edinburgh is a registered user, clicking this link within The University of Edinburgh will redirect to DiscoverED.   This is correct behaviour.