Voice over internet protocol (Voice over Internet Protocol) as an alternative of the traditional conventional POTS which stands for plain old telephone service these are for your home or office, you have to select a Voice over internet protocol service provider. As like old conventional telephone service or mobile cell services, you should have someone which will provide you with connectivity to the rest of the world.
A voip service provider gives two types of components: a gateway between the broadband Internet world and the Public Switched Telephone Network (PSTN) and telephone directory service.
The gateway is that bridge which the broadband network with the PSTN (public switched telephone network) allows access to you so, that you can easily dial and complete your calls to any of the telephone anywhere in the world. Keep in mind, just because you are connected to the Internet does not mean connectivity to the telephone network. This is regardless even if you access the Internet through your telephone line service provider, they are two completely separate things. This gateway thing is the connection between these two opposite and different worlds.
The directory service provides you with a new telephone number which will allows the other people to call you. This directory service connected with your IP address, with this telephone number which you have that can make calls even be properly routed to you when dialed from the outside world, no matter either it is another computer, a telephone or a mobile phone.
Do you want to keep your POTS (plain old telephone service) line and continue to make local calls and use a PC-based Voice over internet protocol service to make all your long distance call or international call. This can be the best solution for those which want or need to keep your POTS (plain old telephone service) line for reasons such as security system monitoring, etc. If you do this, you will still have to pay for you land-line based telephone plus any of the costs which is just related with Voice over internet protocol.
What about a complete home or office phone replacement service? There are many service providers that can provide you with a solution that can completely or totally the need for POTS service. Depending upon you technical ability, you can buy the hardware from one provider and the Voice over internet protocol service from another. Or you can have option for a single box provider that will give you everything which you need or according to your need; hardware, software, installation, support and ongoing telephone service for a single monthly payment only.
In the market there are many of the highly rated Voice over internet protocol providers that will provide you with according to your levels of service, systems and support. You really have to sit down and determine your needs before you begin shopping as the list of these providers continues to grow and the choices of the services that they provide you as what you want.