Telecommunication History

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Seven Generations of Telephony
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Analog Electronic Switching System

The 5th Generation of Telephony

Telephone World

Copyright Jacob Romeyn

Telephone History
- Seven Generations of Telophony
- Magneto Telephone System
- Common Battery
- strowger switching system
- Crossbar switching system
- Analog Electronic switching system
- Digital Electronic switching system
- Voice Over IP (VOIP)
- What will be next ??
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