AT&T Switching Center

AT&T Madison Complex Tandem Office
Alternative namesAT&T Switching Center
PacBell Tower
Pacific Telephone Tower
SBC Building
SBC Communications Switching Station
General information
TypeCommercial offices
Switching station
Location420 South Grand Avenue
Los Angeles, California
Coordinates34°03′03″N 118°15′09″W / 34.050750°N 118.252614°W / 34.050750; -118.252614Coordinates: 34°03′03″N 118°15′09″W / 34.050750°N 118.252614°W / 34.050750; -118.252614
Antenna spire136.55 m (448.0 ft)
Roof79 m (259 ft)
Technical details
Floor count17
Design and construction
ArchitectJohn B. Parkinson
Donald D. Parkinson

The AT&T Madison Complex Tandem Office is a 17-story, 79 m (259 ft) building in Los Angeles, California, completed in 1961. With its microwave tower, used through 1993, bringing the overall height to 137 m (449 ft), it is the 29th tallest building in Los Angeles. The building serves 1.3 million phone lines in area code 213, and other Los Angeles area codes, for foreign long distance calling.

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