AT&T Switching Center

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.

AT&T Madison Complex Tandem Office
Alternative names	AT&T Switching Center PacBell Tower Pacific Telephone Tower SBC Building SBC Communications Switching Station
General information
Type	Commercial offices Switching station
Location	420 South Grand Avenue Los Angeles, California
Coordinates	34.050750°N 118.252614°W
Completed	1961
Owner	AT&T
Height
Antenna spire	136.55 m (448.0 ft)
Roof	79 m (259 ft)
Technical details
Floor count	17
Design and construction
Architect	John B. Parkinson Donald D. Parkinson
References
[1][2][3][4][5]

See also

• List of tallest buildings in Los Angeles

References

1. "AT&T Switching Center". CTBUH Skyscraper Center.
2. AT&T Switching Center at Emporis
3. AT&T Switching Center at Glass Steel and Stone (archived)
4. "AT&T Switching Center". SkyscraperPage.
5. AT&T Switching Center at Structurae

Further reading

• "Los Angeles Central Offices Madison Complex". The Central Office. 14 March 2009. Archived from the original on 3 September 2010. Retrieved 3 September 2010.
• "AT&T Tower, Los Angeles, California". Southland Architecture. 2010. Retrieved 3 September 2010.
• Gallagher, Ryan; Moltke, Henrik (June 25, 2018). "The NSA's Hidden Spy Hubs in Eight U.S. Cities". The Intercept. Archived from the original on June 26, 2018. Retrieved June 26, 2018.