Phone CommunicationpresentacióN01

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Curso se Comunicaciones

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Phone CommunicationpresentacióN01

  1. 1. DEVELOPMENT OF THE PHONE COMMUNICATION
  2. 2. CONVENTIONAL PHONES
  3. 3. CENTRAL OF MAGNETIC CALL
  4. 5. Old telephone
  5. 6. ITI
  6. 9. Intercon
  7. 11. RTT
  8. 17. CELL PHONES
  9. 20. DIFERENT CELL PHONES

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