Delivering Voice 2023 100% correct questions and answers

The public switched telephone network (PSTN) uses pulse code modulation (PCM) to perform which function? Convert an analog signal (human voice) into digital signals so that many calls can travel over the same wire. Which of the following statements is an accurate comparison between packet switching and circuit switching technologies? Packet switching uses the network only when words are spoken, while circuit switching uses the network constantly throughout the entire telephone conversation. ____________________, added to the media access control (MAC) protocol in Data Over Cable Service Interface Specification 1.1 (DOCSIS1.1), was a first attempt at prioritizing Internet protocol (IP) traffic according to its application, giving priority to real-time data packets such as streaming video over other types of packets such as email. Service Flow PacketCable was designed to: Deliver real-time Internet protocol (IP) applications such as voice and video services with the same level of quality as circuit-switching technology did for the plain old telephone service (POTS). The three networks included in PacketCable 1.0 architecture are: The DOCSIS HFC access network, the managed IP network, and the PSTN. In plain old telephone service (POTS), the _________________ is a pair of wires connecting the customer location to the telephone company. Local loop circuit Customer premises devices that can be impacted by cable telephone service include: Medical alert devices, home computer networks, and alarm systems. Which of the following is an accurate description of the benefits of a PacketCable managed Internet protocol (IP) network? PacketCable managed IP networks deliver higher voice quality than other voice over Internet protocol (VoIP) networks because they use a managed IP network instead of the Internet to deliver packets to the public switched telephone network (PSTN). Which of the following statements is an accurate comparison between the signaling of a traditional telephone call and a PacketCable voice over Internet protocol (VoIP) call? Signaling of a traditional telephone call is initiated when equipment in the central office senses a dial tone, while signaling of a PacketCable VoIP call is initiated when the EMTA senses a dial tone. Which tier of voice over Internet protocol (VoIP) service is computer-to-computer based? Tier III or Tertiary VoIP services such as Skype are computer-to-computer based.