The telemedicine units created by the OTE Group for the Administration of the 2nd Health District of Piraeus & the Aegean, using Cisco technology, have been installed at 30 island health centres and 12 regional and central hospitals. At the same time, one unit has been placed at the operations centre of the Ministry of Health. The islands covered by the telemedicine network are Amorgos, Andros, Astypalaia, Icaria, Ios, Kalymnos, Karpathos, Kasos, Kastellorizo, Kythira, Kos, Leros, Limnos, Milos, Mykonos, Naxos, Nisyros, Oinousses, Paros, Patmos, Rhodes, Samos, Santorini, Sifnos, Symi, Syros, Tinos, Fournoi and Chios.