IP Telephony

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN).. See complete definition.

IP Telephony News

View All News

IP Telephony Get Started

Bring yourself up to speed with our introductory content

  • Network protocol

    A network protocol is a set of established rules that dictates how to format, transmit and receive data so computer network devices -- from servers and routers to endpoints -- can communicate regardless of the differences in their underlying ... Continue Reading

  • Understanding MOS for voice quality

    Looking to improve the quality of voice calls? Learn which mean-opinion-score models measure and rate the user experience and the factors that influence voice quality. Continue Reading

  • Test your knowledge of VoIP fundamentals

    Do you want to test your knowledge of VoIP fundamentals and how VoIP works? Take this VoIP quiz and see what areas of voice technology elude you. Continue Reading

View All Get Started

Evaluate IP Telephony Vendors & Products

Weigh the pros and cons of technologies, products and projects you are considering.

View All Evaluate

Manage IP Telephony

Learn to apply best practices and optimize your operations.

View All Manage

Problem Solve IP Telephony Issues

We’ve gathered up expert advice and tips from professionals like you so that the answers you need are always available.

View All Problem Solve