Surtalina Telecom

1974-1993
CTS was founded in 1974 as a spin-off from Companhia Surtalina de Correios, Telefones e Telégrafos.

1993-1999
In 1993, CTS' acronym's meaning was changed into Companhia de Telecomunicações Surtalina to reflect their other services outside landline telephony.

1999-2007
In 1999, CTS' name was simplified to Surtalina Telecom (Surtatel, then ST).