ATHENS, Greece - December 13, 2004 - Hellenic Telecommunications Organization SA (ASE: HTO, NYSE: OTE), the Greek full-service telecommunications provider, announced new retail tariff rates, which, subject to approval by the regulator (NTPC), will be effective from December 31, 2004. Main characteristics of the new tariffs are:

The monthly rental of PSTN lines will increase by euro 0.91, reaching euro 11.40 per month, while ISDN-BRA line rental will also increase by euro 0.91, reaching euro 14.90 per month.

Subscribers of the discount package "OTE options", which offers substantial reductions to retail customers using pre-selected numbers (local, long distance or international), will get up to 4 hours of free calls (three hours local calls and one hour long distance calls) per two months, depending on the size of their bi-monthly bill.

Subscribers of the discount package "OTE business", which offers substantial reductions to business customers using pre-selected numbers (local, long distance or international), will now receive greater discounts (up to 10% in local and 25% in long distance calls), depending on usage.

Subscribers of the discount package "OTE business Plus", which offers substantial reductions to large business customers, will now get greater discounts (up to 10% in local and 25% in long distance calls), depending on usage, and will be enjoying per second charging from the first second of the call.

A special program is also introduced, whereby pensioners past the age of 65 will receive euro 3.00 worth of free local and long distance calls per bi-monthly billing period.

Additionally, starting from December 20, fixed-to-fixed international calls to the 24 members of the enlarged European Union and Albania, will enjoy uniform tariffs, reduced by 15% to 29% compared to previous tariffs, while fixed-to-mobile calls to the EU 24 will be charged at euro 0.283 per minute, and fixed-to-mobile calls to Albania will be charged at euro 0.246 per minute.

About OTE
OTE is a provider of public, fixed switch domestic and international telephony services in Greece. With local, long distance and international communications services in addition to mobile telephony, internet services, and high-speed data communications, OTE provides consumers and businesses the ability to communicate globally through its extensive network infrastructure. In addition, OTE has a number of International investments in the South East European region and addresses a potential customer base of 60 million people.
Listed on the Athens Stock Exchange, the company trades under the ticker HTO as well as on the New York Stock Exchange under the ticker OTE. In the U.S., OTE's American Depository Receipts (ADR's) represents - ordinary share. Additional Information is also available on http://www.ote.gr.

Contacts:
OTE: Dimitris Tzelepis - Head of Investor Relations, Tel: +30 210 611 1574 / 1429 email: dtzelepis@ote.gr
Nikos Kallianis - Senior Financial Analyst, Investor Relations Tel: +30 210 611 5070; email: nkallianis@ote.gr
Daria Kozanoglou - Communications Officer, Investor Relations Tel: +30 210 611 1121; email: nkozanoglou@ote.gr
Taylor Rafferty: London: +44 20 7936 0400, New York: +1 212-889-4350; email: ote@taylor-rafferty.com

Forward-looking statement
Any statements contained in this document that are not historical facts are forward-looking statements as defined in the U.S. Private Securities Litigation Reform Act of 1995. All forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. The factors that could affect the Company's future financial results are discussed more fully in the Company's filings with the U.S. Securities and Exchange Commission (the "SEC"), including the Company's Annual Report on Form 20-F for 2003 filed with the SEC on July 15, 2004. OTE assumes no obligation to update information in this release.