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AT&T Franklin Switching Center (Chicago, Illinois) | telephone exchange building, offices - to be deleted

USA / Illinois / Chicago / Chicago, Illinois / West Washington Street, 311
 telephone exchange building, offices - to be deleted

CLLI = CHCGILFR
Telephone switching center. This is the largest central office in the state of Illinois. Currently contains 6 digital switches.
www.dslreports.com/coinfo/clli/CHCGILFR
Nearby cities:
Coordinates:   41°52'58"N   87°38'10"W
This article was last modified 10 years ago