The Free On-line Dictionary of Computing (30 December 2018):

Euro-ISDN

   European Integrated Services Digital Network.

   An ETSI standard for Integrated Services Digital Network
   being phased in in March 1994.  Euro-ISDN will allow full
   transparent interworking between all European countries
   (members of the CEPT).  It is available on a commercial
   basis in most European countries.

   (1994-12-08)