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(TCO 1) The legacy POTS residential phones are powered by _____. Answer

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  1. (TCO 1) The legacy POTS residential phones are powered by _____.
  2. (TCO 1) The two variants of Pulse Code Modulation (PCM) are _____.
  3. (TCO 1) A PSTN POTS line can carry _____ call(s).
  4. (TCO 1) Which of the following is an advantage of the PSTN, as compared to other networks?
  5. (TCO 1) Which of the following overall uptimes indicates a higher level of network and system reliability?
  6. (TCO 1) Which of the following IP characteristics doesn’t favor transmission of voice?
  7. (TCO 2) In a circuit-switched Private Branch Exchange (PBX), what component allows internal phones and extensions to be connected to the PBX?
  8. (TCO 2) Connecting a circuit-switched Private Branch Exchange (PBX) to Central Office (CO), a T-1 voice trunk carries multiple conversations using the _____ technology.
  9. (TCO 2) Which of the following could be a disadvantage of circuit-switched Private Branch Exchange (PBX), as compared to IP-based and/or packet-based telephony systems?
  10. (TCO 2) Which of the following voice communications systems and services could be found in an enterprise environment?

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