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Bell’s original phone Design ~ 1880

Bell’s original phone Design ~ 1880. Early Bell operator and switch panel. Central office, 1884. Magneto Set Telephone. Early manual switch board. Panel switch. Step by Step Community Dial Office. #1 Crossbar switch. Western Electric Number 5 Crossbar Master Test Frame.

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Bell’s original phone Design ~ 1880

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  1. Bell’s original phone Design ~ 1880

  2. Early Bell operator and switch panel

  3. Central office, 1884

  4. Magneto Set Telephone

  5. Early manual switch board

  6. Panel switch

  7. Step by Step Community Dial Office

  8. #1 Crossbar switch

  9. Western Electric Number 5 Crossbar Master Test Frame

  10. #5 Crossbar switch

  11. #1 ESS circuit pack

  12. A #3ESS switch

  13. 4ESS

  14. Nortel DMS 100

  15. Lucent 5E switch

  16. Lucent 5E-XC packet switch enhancement

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