Voice over Internet Protocol (also voice over IP, VoIP or IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).
A VoIP system works by taking your analogue voice signals, converting them into digital signals, then sending them as data over your broadband line. VoIP - also known as internet telephony, IP telephony, or broadband phone - is a way of making phone calls that, believe it or not, doesn’t use a phone line.
Using a special adapter, you can make VoIP calls from a regular old landline phone. These adapters plug into either a phone socket in the wall or into your router.
There are dozens of programs that let you make voice calls to anyone who also has it installed, including Skype, Google Talk, and Apple FaceTime. Some, such as Skype, can be used to call regular landline or mobile numbers too. Calling someone else who has the app is free, but calling an actual phone number will usually cost a little.
You can use your smartphone to make voice calls using certain apps. There are apps that you can use to call other people who have the same app. There's Skype, FaceTime, Viber, Line, WhatsApp, will even let you call a regular landline or mobile number - though bear in mind this will usually cost money.
The other kind of VoIP apps are ones from landline providers. These are pretty clever, as they let you make calls that use the calling minutes included in your home phone plan. So if you have inclusive weekend calls, or super cheap international calling, you can reap those benefits from your smartphone too - even when you're not at home. The other kind of VoIP apps are ones from landline providers. These are pretty clever, as they let you make calls that use the calling minutes included in your home phone plan. So if you have inclusive weekend calls, or super cheap international calling, you can reap those benefits from your smartphone too - even when you're not at home.
A VoIP softphone is a program that installs to and runs from your computer. A VoIP softphone enables you to make calls with just your computer using a VoIP service.
An IP PBX is a private branch exchange (telephone switching system within an enterprise) that switches calls between VoIP (voice over Internet Protocol or IP) users on local lines while allowing all users to share a certain number of external phone lines.
IP Phones, These specialized phones look just like normal phones with a handset, cradle and buttons. But instead of having the standard RJ-11 phone connectors, IP phones have an RJ-45 Ethernet connector. IP phones connect directly to your router and have all the hardware and software necessary right onboard to handle the IP call. Wi-Fi phones allow subscribing callers to make VoIP calls from any Wi-Fi hot spot.
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