Voice over IP / Internet is a method of voice coding, in low frequency, and numerically to be able to carry it with all the data which circulate on Internet according to the protocol TCP/IP. To call from a PC towards another PC, no particular problem, just a coding/decoding software and a microphone-headset connected to your sound card are enough; but to call on a landline telephone or a mobile it requires a particular infrastructure for the decoding at the other end, i.e. at the local nod entry point of your correspondent’s telephony provider. There are various companies on the market which provide voip phone service at very competitive prices compared to the traditional operators, while some sites gracefully offer this service to private users when you sign for a voip plan. According to the same principle, note that certain sites also allow you, to consult your voicemail, to receive fax on email, to have an automatic line (“hotline”), and lots of very functional features. And these features can be reached from you fixed line and mobile phone line.
You generally get invoiced for your communications at a local tariff by your traditional phone provider. As an alternative to traditional telephony services, VoIP (Voice over IP) did for a few years important and significant progress near the general public market. Services of IP telephony long time suffered from major restraints limiting its development on the professional market. Since companies do not only need cost reduction on communications: they also need services.
New telephony generation is already there, in fact, devises are able to code and decode the voice by themselves. Moreover there will be no more difference between data Internet and the voice, Either you call from your PC phone, your coffee machine, your fridge, or from your mobile... all will pass over the Internet, our nice but ‘old-school’ home handsets will be nothing any more but objects of collection!. At the moment, only large companies and enterprises are modernizing their phone infrastructure. Tomorrow, within 5 years maximum, it will be the SME’s turn and general consumer to upgrade their installation to business VoIP.