In this chapter, you will learn:
• About the primary Voice over IP protocols, SIP and H.323
• The benefits of implementing Voice over IP
• The security implications of Voice over IP
• Methods of securing a Voice over IP network
Voice over IP (VoIP) has become a common tool for communicating, both for people and businesses. If you have used FaceTime or Skype, you have been using a form of VoIP. VoIP is really a catchall term for a handful of technologies that transmit voice traffic over data networks. Since video can use the same technology, ...