• In the data transmission business, line equivalents in operation increased 13.4%

• Internet access accounts increased 24.6% in 2003

• Local traffic increased 3.2% during the year

• DLD traffic had an annual increase of 7.2%

• ILD traffic decreased 8.3% in 2003

• Operating revenues totaled 116,848 million pesos, 0.3% lower than in 2002

• Operating margin was 33.8% and the EBITDA margin was 51.6%

• Net income rose to 22,450 million pesos for the full year, 10.3% higher than last year

• Earnings per share were 0.46 pesos and 0.82 dollars per ADR in the quarter and 1.85 pesos per share and 3.30 dollars per ADR for the full year

• Total debt in dollars decreased 4.7% compared with 2002

• Debt-to-capitalization ratio was 46.3% at year-end 2003

**One ADR represents 20 shares

The investments that TELMEX carried out in 2003 totaled 995.7 million dollars and increased its installed capacity in an important manner, that is the case of installed lines that at the end of the year they reached 17 million 202 thousand lines. The installed Internet access services totaled 2 million 54 thousand services.

*Amounts of each quarter.

At year-end 2003, TELMEX had 15,683,264 fixed lines in service, an annual increase of 8.6% with a net addition of 327,478 lines in the fourth quarter. This gain was 13.6% higher than the fourth quarter of 2002. During the year, 1,236,828 lines were added, 15.1% more than in 2002. Of total lines in service, 639,190 belong to Multifon Hogar, and this amount was three times higher than in 2002.

In the fourth quarter, penetration of digital services was 35.0%, 4.8 percentage points higher than the same quarter of 2002. Total lines with at least one digital service were 5,488,497.

Free voice mail was launched in the first quarter of 2003 and at year-end, there were 5,355,128 free voice mails in operation.

During the quarter, 6,668 million local calls were made, 2.8% higher than the same quarter of last year. For the full year, total call traffic increased 3.2%, totaling 26,494 million calls.

Interconnection traffic totaled 6,568 million minutes during the quarter, 12.8% more than the fourth quarter of 2002. For the full year, interconnection traffic totaled 25,790 million minutes, 19.1% higher than in 2002.

In the fourth quarter, domestic long distance traffic totaled 3,763 million minutes, 0.9% higher than the same period of 2002. For the full year, domestic long distance minutes rose to 15,376 million, an annual increase of 7.2%.

In 2003, TELMEX had 1,452,338 Internet access accounts, an annual increase of 24.6%. The gain in accounts during the fourth quarter was 79,823. During the year, 286,937 Internet access accounts were added, an increase of 13.7% compared with 2002.

In the fourth quarter, 27,637 users were added to broadband service ADSL (Prodigy Infinitum), reaching 179,293 services at year-end 2003, 169.3% more than in 2002. Prodigy Infinitum accounts represented 12.4% of total accounts in service.

At December 31, 2003 Internet service penetration including broadband services, in respect to total lines in service was 9.3%, 1.2 percentage points more than the same period of the previous year.

In the corporate market of data transmission, TELMEX operated 2,291,111 line equivalents at the end of the fourth quarter; an increase of 13.4% compared with the same period of 2002. In the fourth quarter, the gain of line equivalents for data transmission rose to 113,582. The annual gain was of 270,319 line equivalents.

In the fourth quarter, total revenues were 30,183 million pesos, a decrease of 1.2%, compared with the same period of the previous year. For the full year, revenues totaled 116,848 million pesos, a decrease in real terms of 0.3% compared with 2002.

• Local: revenues decreased 4.0% in the fourth quarter and 2.5% for the full year.

• DLD: these revenues decreased 1.7% in the fourth quarter. For the full year, these revenues increased 1.5%.

• ILD: revenues increased 18.2% compared with the fourth quarter of 2002 and for the full year, they decreased 8.2%. The increase in the fourth quarter was due to more incoming traffic.

• Data: revenues related to Internet services, rent and installation of line equivalents and value-added services related to data transmission increased 4.7% in the fourth quarter compared with the same period of 2002 and 5.4% for the full year. These revenues were approximately 3,654 million pesos in the fourth quarter and 13,646 million pesos in 2003.

• Interconnection: revenues increased 2.5% compared with the fourth quarter of 2002 and 8.6% for the full year. This growth was the result of lower growth in Calling Party Pays traffic and the one originated by long distance operators.

• Others: these revenues are mainly comprised by advertising sales of yellow pages as well as for sales in Tiendas TELMEX (TELMEX Stores) that decreased 7.1% in the fourth quarter and 1.3% in 2003.

Cash costs and expenses totaled 14,181 million pesos in the fourth quarter, a decrease of 3.7% compared with the same period of the previous year. For the full year, total cash costs and expenses rose to 56,615 million pesos, 1.6% more than the same period of 2002.

• Cost of sales and services: increased 1.3% in the fourth quarter and 1.8% for the full year. Both increases were due to higher pensions and seniority premiums, the increase in electricity rates and higher costs for telephone sets and PC's.

• Commercial, administrative and general expenses: decreased 12% in the fourth quarter due to the control on uncollectables and advertising expenses. For the full year, these expenses remained flat.

• Interconnection: decreased 1.9% compared with last year's fourth quarter and increased 3.0% for the full year.

• Depreciation and Amortization: presented an adjustment of 18.6% in the fourth quarter that was mainly due to the variation of the exchange rate. For the full year, the increase was of 1.7%.

In the fourth quarter, EBITDA totaled 16,002 million pesos, 1.2% higher than the same period of 2002 and for the full year, EBITDA totaled 60,233 million pesos, 2.1% lower than the previous year. Operating income in the fourth quarter totaled 10,523 million pesos, 6.0% lower than the same period of the previous year and for the full year, operating income decreased 3.9% totaling 39,539 million pesos.

Comprehensive financing cost was 1,226 million pesos during the fourth quarter due to an exchange loss of 970 million pesos resulting from the depreciation of the peso versus the US dollar of 2.8% during the quarter. Net Interest showed a charge of 829 million pesos and a gain of 573 million pesos was generated in the monetary position. Comprehensive financing cost for the full year totaled 4,070 million pesos, 39.2% lower than in 2002.

Net income in the fourth quarter totaled 5,585 million pesos, 1.7% higher than the same period of 2002. For the full year, net income rose to 22,450 million pesos, an increase of 10.3% compared with 2002.

From October 1^st to December 31^st, TELMEX repurchased 181,245,600 of its own shares representing 1.5% of outstanding shares at September 30. TELMEX's earnings per share for the fourth quarter, based on the number of shares outstanding at period end, were 0.46 pesos and 1.85 pesos for the full year.

At December 31, 2003 total debt, short-term and long-term equaled 6.112 billion dollars a decrease of 4.7% from 6.413 billion dollars in December 2002. Without considering hedges, 87.3% of total debt was foreign-denominated and at the end of December, currency hedges covered 585 million dollars of the total debt. Additionally, interest rate swaps were carried out for 12,390 million pesos producing a new fixed rate of 9.2% and 1.1 billion dollars with a fixed rate of 2.4%, with average maturities of 6 years for swaps denominated in pesos and 5 years for swaps denominated in dollars. After the interest rate swaps, fixed rate debt represents 93.1% of total debt.

Outstanding shares at December 31, 2003: 12,109,205,252

Exchange rate used at December 31, 2003: 11.2360 pesos per dollar

The local service income statement, prepared in accordance with accounting separation principles, shows that revenues for the fourth quarter decreased 1.6% compared with the same period of the previous year. This result was due to the decrease of measured service rates in real terms, partially offset by higher interconnection revenues. For the full year, local revenues had an annual increase of 0.2% totaling 85,241 million pesos.

Operating costs and expenses increased 1.8% compared with the fourth quarter of 2002. This result was due to higher depreciation derived from the variation of the peso to the US dollar, partially offset by a decrease of 4.7% and 1.2% in cost of sales and services and commercial, administrative and general expenses, respectively. Additionally, costs related to interconnection decreased 2.0% in the fourth quarter. For the full year, total operating costs and expenses increased 1.3% totaling 59,331 million pesos

In the fourth quarter, operating income decreased 8.7% totaling 6,452 million pesos and EBITDA totaled 10,258 million pesos, similar to the amount registered in the same period of 2002. For the full year, operating income decreased 2.0% and EBITDA decreased 0.7%, totaling 25,910 and 39,977 million pesos, respectively.

The long distance income statement prepared in accordance with accounting separation principles shows that long distance revenues decreased 0.5% in the fourth quarter. The decrease in revenues was due the reduction of domestic and international long distance rates in real terms, partially offset by a recovery in international long distance traffic. For the full year, long distance revenues totaled 24,513 million pesos, a decrease of 3.6% compared with the previous year.

Operating costs and expenses in the fourth quarter decreased 4.1% compared with the same period of last year. This decrease is the result of the strict control on cost of sales and services that decreased 22.8% as well as in commercial, administrative and general expenses that also decreased 6.0%. Depreciation increased 17.1% because of the variation of the peso to the US dollar. For the full year, operating costs and expenses decreased 0.6%, totaling 17,366 million pesos.

Operating income increased 10.0% and EBITDA increased 11.8% in the fourth quarter totaling 1,717 and 2,346 million pesos, respectively. For the full year, operating income decreased 10.2% totaling 7,147 million pesos and EBITDA decreased 5.7% totaling 9,934 million pesos.

TELMEX, is a corporation made up of Telefonos de Mexico, S.A. de C.V., its subsidiaries and affiliates, provides telecommunications services throughout the country. In addition to other services, this includes operation of the nation's most complete local, domestic and international long distance networks. Additionally, TELMEX offers services like connectivity, Internet access, colocation, web hosting, production and distribution of telephone directories and interconnection services to other telecommunications operators