council decis march conclus agreement form exchang letter european commun switzerland extens common commun network common system interfac ccn csi framework convent common transit procedur ec council european union regard treati establish european commun articl sentenc articl subparagraph articl thereof regard propos commiss implement computeris transit system provid decis ec efta joint committe common transit requir set intern comput network make exchang inform compet author contract parti convent common transit procedur hereinaft refer quot convent quot european commun develop common commun network common system interfac ccn csi fulfil requir decis ec efta joint committe common transit ccn csi contract parti convent financi particip partner countri relat issu determin mutual agreement commun partner countri octob council authoris commiss european commun negoti commun countri contract parti convent agreement form exchang letter extens ccn csi commiss negoti extens ccn csi switzerland agreement form exchang letter extens approv decid articl agreement form exchang letter european commun switzerland extens common commun network common system interfac ccn csi framework convent common transit procedur approv behalf commun text agreement form exchang letter attach decis articl presid council authoris design person authoris sign agreement form exchang letter render bind commun articl decis effect dai public offici journal european commun brussel march council presid sócrate oj oj oj