Filter Technology by: All Telegraph (34) Exchanges (26) Patents (22) Wireless Tech (22) Data Comms (20) Switching (20) Phreaking/Hacking (19) Electronics (17) Dialing (14) Network (13) Wired Tech (13) Operations (4) Computing (2) Bell Labs Records (436)
Alec Reeves invents pulse code modulation
Alec Reeves
1937
Telex service spreads around the world
Telex service spreads around the world
1945
T1 digital carrier system developed
1960
Automatic (no operator) Telex service launches in England
Automatic (no operator) Telex service launches in England
1960
Lady Bird Johnson makes first Picturephone (Mod I) call
Lady Bird Johnson makes first Picturephone (Mod I) call
First Calls AT&T / Bell System
1965
Thompson and Ritchie develop the UNIX operating system
Brian Kernighan Dennis Ritchie Ken Thompson
Computing Bell Labs
1969
Metcalfe invents Ethernet
Robert Metcalfe
1973
Cerf and Kahn design TCP/IP
Vint Cerf
1974
Telex With Teleprinter
Telex With Teleprinter
📄 Open PDF
PDF Brochures
1978
Prestel
Prestel
📄 Open PDF
PDF Brochures
1980
ISDN development begins at Bell Labs
Bell Labs
1980
Minitel launches
Minitel launches
PTT/France Telecom
1980
Hayes launches the PC modem
Dennis Hayes
1981
Viewtron Introduction, Viewdata Corporation (AT&T)
Viewtron Introduction, Viewdata Corporation (AT&T)
Technology AT&T / Bell System
1983
Minitel Videotex Terminal Specification
Minitel Videotex Terminal Specification
📄 Open PDF
PDF Books-booklets
1984
NTT launches world's first ISDN service
NTT
1984
SS7 signaling becomes widespread
1991
First SMS Message sent
First SMS Message sent
Wireless Tech First Calls
1992
VoIP demonstrated commercially
1995
Croak pioneers Voice over IP at AT&T
Marian Croak
1998