BT Educational Service - call routing from UK to Australia

What’s the Greatest Machine of the 1960s…the Post Office Tower? (with Chris Barrie)

British Telecom Research Labs, Martlesham, Suffolk 1984 (now Adastral Park)

Long Distance Telephone Calls: Speeding Speech - circa 1950 - CharlieDeanArchives / Archival Footage

End of an Era | BT Heritage

The Secrets Of Cornwall - Part 1 - Communications

Why Is The Top Floor Of This Telephone Exchange Fake?

2600? How Phreaking Really Worked

Краткий обзор телефонной станции музея BIG — телефонные вторники

AT&T Archives: What is the Bell System?

BT Engineering training film (1987) - "Charging Matters"

AT&T Telelessentials Curriculum Operations Systems TC1607

The Telephone Exchange (1982) British Telecom Schools Film

BT System X - 1980s Promotional Film

The Post Office Tower of London | BT Heritage

A tour of AT&T's Network Operations Center (1979) - AT&T Archives

Архивы AT&T: Телефонный бум 1950-х годов

"Long Distance" A short documentary on how long distance calls work - Circa 1941

"TOOLS OF TELEPHONY" 1956 WESTERN ELECTRIC TELEPHONE SYSTEM PROMO FILM BELL SYSTEM 98694

«МОБИЛЬНЫЕ ТЕЛЕФОНЫ» — фильм Bell Telephone 1940-х годов. Ранняя система сотовой связи. 90884

The Dial Comes To Town