Voice over Internet Protocol (VoIP)
is a general term for a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packet-switched networks. Other terms frequently encountered and synonymous with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone.
Internet telephony refers to communications services — voice, facsimile, and/or voice-messaging applications — that are transported via the Internet, rather than the public switched telephone network (PSTN). The basic steps involved in originating an Internet telephone call are conversion of the analog voice signal to digital format and compression/translation of the signal into Internet protocol (IP) packets for transmission over the Internet; the process is reversed at the receiving end.
VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio via an audio stream. Codec use is varied between different implementations of VoIP (and often a range of codecs are used); some implementations rely on narrowband and compressed speech, while others support high fidelity stereo codecs.
The way we make phone calls is changing. In fact in many circumstances things have already changed. Take long distance calls for instance, many service providers are already using a technology called Voice Over IP or VoIP for short. If you have never heard of it before, then the following article will change the way you think about how long distance phone calls are being made now, and about how all phone calls will be made in the future. Voice Over IP is a method for turning analog audio signals into digital data that can be transferred over the internet.You may be asking yourself how this is useful. Well, think about it for a few seconds. If it is possible to turn analog signals into digital data, then VoIP can turn a standard internet connection into a method for placing phone calls anywhere in the world virtually free, except for your internet service fee, enabling you to bypass the phone companies entirely. Voice Over IP (VoIP) has the potential to completely revolutionize the way the world’s phone systems operate. There are many VoIP service providers that have been around for a while, and are growing steadily. Now the world’s leading telecommunications operators are waking up to the endless possibilities of this new technology, setting up calling centers around the world, and promoting the sales of Voice Over IP phone systems.
Because with Voice over the IP you can make calls from anywhere you have access to a broadband connection, users can take their IP phones or ATAs with them on trips and still have access to what is essentially their home phone.Some people use a softphone to access their service. A softphone is a specially developed software application that loads the VoIP service onto your desktop computer or laptop. Some even have an interface on the screen that looks like a traditional phone. These softphone applications allow you to place VoIP calls from your laptop; anywhere in the world you have access to a broadband connection. Most traditional phone companies charge you for extra features that are added to your account. With VoIP service providers these usually come as standard. Features such as: 1. Caller ID 2. Call Waiting 3. Call Transfer 4. Repeat Dialing 5. Return Call 6. Three-Way Dialing