TELECOMMUNICATIONS 33405-12

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Across
  1. 3. bipolar eight zero transmission
  2. 5. positive phone line conductor
  3. 6. service POTS
  4. 9. produces train of nominal 90VDC pulses on ring line
  5. 11. connection point from service to residence
  6. 17. Hz frequencies for the #4
  7. 18. false off hook condition, false ring lead open
  8. 20. nominal on-hook voltage
  9. 22. required for voice grade long distance signals
  10. 23. supervisory, does not carry voice signals
  11. 24. digital voice service
  12. 25. different name/terminology for minimum point of entry
  13. 26. digital voice service
Down
  1. 1. rotary dial phone signals
  2. 2. 3VDC to 9VDC
  3. 4. remote location telephone
  4. 7. NANP
  5. 8. telephone line conductor that makes connection first
  6. 10. black and yellow phone line wires
  7. 12. green and red telephone wires
  8. 13. switches long distance calls
  9. 14. digital voice service
  10. 15. connects customer to telco company
  11. 16. false ring single is heard
  12. 19. level one digital transmission starts with ____ signals
  13. 21. negative phone line conductor