Telecom Italia's wireline unit is Italy's #1 telephone operator, with some 4.1 million fixed access lines. It serves Italian customers through millions of broadband and wireless connections. While Telecom Italia does most of its business in Italy, Latin America is a key international market. The company provides wholesale network access in South America, as well as Italy. Its TIM Brasil subsidiary is a leader in the Brazilian wireless market with more than 64.1 million subscribers; its Argentina subsidiaries cater to 1.6 million broadband subscribers and 18.2 million mobile subscribers.