The sentence that best summarizes why telecommunications is in debt to Cold War is "our mobile devices use the satellite communications systems developed during the Cold War.
According to the report "Satellite Communications and the Cold War", by Hugh Slotten, Satellite communication and telephony were very important elements for transmitting information during the Cold War. That was the way for transmitted relevant information for espionage.
To this day, satellites allowed world-wide communication with mobile telephones, computers and electronic devices. Broadcasting has benefited from these new means of communication. They can report any news from any place in the world, immediately.