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Wednesday, November 22, 2017

Which of the following is NOT a business phone technology?

Which of the following is NOT a business phone technology?

  • PBX
  • SIP
  • DNS
  • PRI 

Which of the following is NOT a business phone technology?










EXPLANATION

Domain name system (DNS) is not a business phone technology. The Primary Rate Interface (PRI) is a telecommunications interface standard used on an Integrated Services Digital Network (ISDN) for carrying multiple DS0 voice and data transmissions between the network and a user. The Session Initiation Protocol (SIP) is an Internet Engineering Task Force (IETF) standard protocol for initiating an interactive user session that involves multi-media elements, such as video, voice, chat, gaming, and virtual reality. A PBX (private branch exchange) is a telephone system within an enterprise that switches calls between enterprise users on local lines while allowing all users to share a certain number of external phone lines. 

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