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1979
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1980

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Siemens debuts digital telephone switching
1980
Technology Switching Siemens
AT&T Annual Report, 1980
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1980: AT&T Annual Report, 1980
PDF Annual-reports
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1980: Reach Out ad
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Harold Black and the Invention of the Negative Feedback Amplifier (AT&T)
1980: Harold Black and the Invention of the Negative Feedback Amplifier (AT&T)
Technology Electronics Bell Labs Harold Stephen Black
ISDN development begins at Bell Labs
1980
Technology Data Comms Bell Labs
Payphones
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1980: Payphones
PDF Brochures Payphones
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1980: Reach Out ad
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We Make Telephones (Western Electric)
1980: We Make Telephones (Western Electric)
Business Manufacturing AT&T / Bell System Western Electric
Minitel launches
🌐 Wikipedia
1980: Minitel launches
Data Comms PTT/France Telecom
Prestel
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1980: Prestel
PDF Brochures Data Comms
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1980: Reach Out ad
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Call Me (Blondie)
1980: Call Me (Blondie)
Rock-star-calls
Public Telephone Instruction Card Manual Bell System
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1980: Public Telephone Instruction Card Manual Bell System
PDF