2012 SECOND QUARTER RESULTS UNDER IFRS TO BE RELEASED

ONAUGUST 9, 2012

ATHENS, Greece – August 1, 2012 – Hellenic Telecommunications Organization SA (ASE: HTO, OTC MARKET: HLTOY), the Greek full-service telecommunications provider, announces that it will release its second quarter 2012 results under IFRS on Thursday, August 9, 2012.

OTE's management will host a conference call at 17:00 (GREECE) / 16:00 (CONTINENT) / 15:00 (UK) /10:00 (EASTERN US) following the release, to review the results.

Details regarding the conference call dial-in and replay numbers as well as the live audio webcast of the conference call, following the results, can be accessed at: http://www.ote.gr/portal/page/portal/OTEGR/OTEMainPage and http://www.ote.gr/portal/page/portal/InvestorRelation/InvestorRelation