PSTN and VoIP Fundamentals

A range of established IT professionals with an understanding of networking technology who need to be familiar with VoIP technology.

A basic understanding of networking technologies and good computer literacy

Expected Duration
120 minutes

The history of telephony begins with the public switched telephone network (PSTN), which is the worldwide circuit-switched telephone network made up of public and private networks. Voice over IP (VoIP) is the latest telephone technology which is able to provide advanced services to both consumers and businesses, at a reduced cost. This course covers the history and operation of the PSTN and VoIP, and compares the two technologies. Basic signaling technologies used in the PSTN are also described. In addition, this course explores the expansion of VoIP in both the immediate future and in the coming years.



  • recognize the fundamentals of the PSTN
  • recognize the components of the PSTN
  • distinguish between circuit-switched and packet-switched networks
  • recognize how a PBX operates
  • distinguish between PSTN signaling methods
  • recognize how the PSTN operates
  • The Emergence and Future of VoIP

  • recognize key similarities and differences between the PSTN and VoIP
  • recognize key considerations when integrating legacy PBX applications and IP PBX systems
  • recognize key aspects in the evolution of VoIP
  • recognize the possible future developments of VoIP
  • recognize the challenges facing the widespread adoption of VoIP
  • recognize the development and future trends of VoIP




    Multi-license discounts available for Annual and Monthly subscriptions.