Filter The Tech by: All Patents (24) Switching (22) Wireless Tech (22) Electronics (19) Phreaking/Hacking (19) Telegraph (18) Wired Tech (12) Digitization (8) Bell Labs Records (436)
Puskas introduces the multiplex switchboard
Tivadar Puskás
1887
Almon Strowger invents the automatic switch
Almon Strowger
1889
PDF: Kellogg 1915 Switchboards catalog
Kellogg 1915 Switchboards catalog
1915
Crossbar switching introduced
Crossbar switching introduced
1938
PDF: The Crossbar System Bell Labs
The Crossbar System Bell Labs
1939
Video: The Step-By-Step Switch
The Step-By-Step Switch
1951
PDF: Strowger Automatic: A Sixty Year Report
Strowger Automatic: A Sixty Year Report
1952
PDF: Ericsson 1953 crossbar switching brochure
Ericsson 1953 crossbar switching brochure
1953
PDF: Kellogg 1954 Toll Switchboard catalog
Kellogg 1954 Toll Switchboard catalog
1954
Video: A Surreal Look at Telephone Switching
A Surreal Look at Telephone Switching
1958
PDF: Ericsson 1964 electronic switching brochure
Ericsson 1964 electronic switching brochure
1964
Video: Electronic Switching System Debut (Bell System)
Electronic Switching System Debut (Bell System)
1965
No. 1 ESS switch enters commercial service
No. 1 ESS switch enters commercial service
1965
Video: Under London Trunk Telephone
Under London Trunk Telephone
1968
First 'plugless' digital operator stations (TSPS), in Morristown, NJ
First 'plugless' digital operator stations (TSPS), in Morristown, NJ
1969
Hoover invents computerized call switching
Erna Schneider Hoover
1971
PDF: Ericsson 1976 digital switching brochure
Ericsson 1976 digital switching brochure
1976
No. 4 ESS digital toll switch deployed
1976
Northern Telecom DMS-100 digital switch
1978
Siemens debuts digital telephone switching
1980
Video: Speedy Cutover Service, SXS to ESS (AT&T)
Speedy Cutover Service, SXS to ESS (AT&T)
1984
SS7 signaling becomes widespread
1991