El 1882, la generació era de corrent continu (CC en català o DC en anglès), que no es podia fàcilment augmentar la tensió per a la transmissió a llarga distància.
If a third Member State (i.e. neither that which granted the residence permit nor that which issued the alert) discovers that there is an alert on a third-country national that holds a residence permit from one of the Member States, it shall notify both the Member State which granted the permit and the Member State which issued the alert, via SIRENE Bureaux using an H formWikiMatrix WikiMatrix