List of dialling codes in Brazil

An autodialer is in telecommunications a mechanism by which a user can establish a dial-up connection, without it being switched manually by a " Lady of the office."

Participants dial was made possible end of the 19th century by automating the exchange. First dials were used later keys prevailed.

The first autodialer Almon B. Strowger patented in 1889, the 1892 also the first automatic switching center La Porte, Indiana einrichtete.

Development in Germany

The first autodialer in Germany was taken on July 10, 1908 in Hildesheim in local transport with 900 participants in operation. The national telephone traffic was from 1923 automated ( in Weilheim / Upper Bavaria was taken on May 16, 1923, the first Selbstwählfernsprechamt the world with five local networks in operation), while the first cross-border Selbstwählverbindung put into operation on September 3, 1955 between Lörrach and Basel been. It was not until 1966, the participants self- selection was introduced nationwide in the Federal Republic, and abolished the last manual switching in Uetze in Hannover in April 1966. It took another six years, until in the Federal Republic for the Selbstwählferndienst unified code numbers and the traffic selection indices "0" for Germany and "00" were introduced for foreign countries, which is also an international automated remote option was created. Nevertheless, it was the simplified Selbstwählferndienst ( traffic access code "9"), which after the 2nd World War (ca. 1949) was (for example, in the Ruhr area ) built in some metropolitan areas of the Federal Republic, operated until the 80 years in parallel.

After reunification, the German Federal Post and Telecom taught in the five new Länder, a digital telephone network. Since 6 July 1991, the direct election is possible in all parts of the earth.