Voice over Internet Protocol, or VoIP, telephone products connect to VoIP, or Internet telephony, systems, which use packet-switched telephony to transmit calls over the Internet as opposed to the circuit-switched telephony used by the traditional Public Switched Telephone Network (PSTN).
VoIP telephones look and largely function like standard phones, but they have built-in IP technology and an RJ-45 Ethernet connector instead of the standard RJ-11 phone connector that enables the VoIP phone to connect directly to a router for making and receiving IP calls. A standard phone can also function as a VoIP telephone when used with an analog-to-digital converter called an ATA, or analog telephone adaptor. Another option is to bypass the phone entirely and simply use a VoIP-capable computer to make and receive IP calls.
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More »20 Ways to Shorten a URL
If you need to shorten a long URL try this list of 20 free online redirection services. Read More »Top 10 Tech Terms of 2015
The most popular Webopedia definitions of 2015. Read More »
This Webopedia study guide describes the different parts of a computer system and their relations. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »The Five Generations of Computers
Learn about each of the five generations of computers and major technology developments that have led to the current devices that we use today. Read More »