By December, the first automatic exchange on Jirón Washington in Lima began operating, with capacity for 2,000 more lines.

[citation needed] On March 25, 1970, the Revolutionary Government of the Armed Forces of Peru decided to nationalise CPT.

Then, in 1973, it expropriated the CPT and the National Telecommunications Company (Spanish: Empresa Nacional de Telecomunicaciones) founded a year earlier, with the latter assuming the services provided by the Peruvian branches of the ITT and Ericsson in the interior of the country and leaving the CPT with services in the metropolitan area of Lima.

[citation needed] In 1981, the company introduced Rin, a special coin to be used at all of its payphones in order to discourage theft.

[citation needed] A football team of the same name was founded by workers of the company, reaching the third place of the 1975 Copa Perú.