Telephone The OTE (Hellenic Telecommunications Organization) offices are the cheapest way to make local and/or international calls. There are outlets with booths in most towns, and payment is made to the desk operator upon completion of the call. OTE offices are open from 8.00 to 14.00. Local and/or international calls can also be made from public phone card booths and kiosks (periptera) equipped with meters. Pre-paid phone cards can be purchased from kiosks and OTE offices nationwide.