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Operator posts, numbered from 6201 to 6204. They formed part of the switchboard installed in the 1950s on the sixth floor of the Gran Vía building.
Wall-mounted telephone unit with local battery and magneto call. External buzzer with two bells located on the front. With bakelite handset.
RADIO STATION
Automatic telephone set, with central battery and interior buzzer. Model made of black Bakelite. This is the standard model that Telefónica installed for its subscribers when they contracted the line.
COAXIAL CABLE
Section of coaxial cable, the first of the new means of transmission that would make it possible to increase the capacity of telecommunications networks
Advertising poster for the telephone directory.
New intercity switchboard installed in the Zaragoza automatic power station building.
COAXIAL CABLE : CABLE TRUNKING
COAXIAL CABLE : SPLICING PROCESS
Commercial offices. Clot Central.