U.S. PSTN telephone switch hierarchy.
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VoIP stands out because of its convenience, quality, but also because of its low cost. Not only is the monthly fee lower than PSTN (Public Switched Telephone Network) but VoIP also offers features without charging for them.

Despite the fact that VoIP is a great service, there are still a few loose bolts. When switching to VoIP from a traditional phone service it may not be possible t o keep your old phone number. The service offers local phone numbers in some areas. Check with VoIP and your current phone company if this service is available in your area.

Certain VoIP services will redirect your 911 calls to emergency call centers close by, if you have registered your address with them in case you need 911. But, once connected to the emergency center the operator will not be able to determine your location if you can’t speak. Especially for elderly people it is advised to either stick to the traditional phone line or to always have a cell phone nearby.

In case of a blackout VoIP comes with a battery backup. Only during long blackouts the batteries will go empty. For these types of situations it is also advised to keep a traditional line or a cell phone.

If you consider these to be minor flaws and you wish to switch over to VoIP, the first thing you need to do is choose a VoIP service provider.

The difference between the many providers out there is their rate for long-distance and overseas calls. So pick a provider that suits your type of calling most. You can also choose to have multiple phone numbers. If you were to have local numbers in different cities, people who call you in those cities will only pay the local tariff. Pick a VoIP service that will keep your costs at a minimum, and ask for a local number.

To use VoIP you need a broadband cable or DSL modem, a router and perhaps an IP phone. You can also get a modem and router in one. To set VoIP up you need to follow two easy steps: Plug the router into the modem and the IP phone into the router. No fuss, no muss. 

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Skype Limited
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If you’re not sure if VoIP is something for you, then try it out without any charge. If you have a headset and a sound card you can download VoIP software and call anyone anywhere. Skype, Free World Dialup and Net2Phone are some of the popular names you might want to consider. These ‘soft phones’ are user-friendly and they charge you nothing as long as you don’t call a cell phone or landline.

When choosing for VoIP you have a number of options when it comes down to the type of phone you wish to use. You can use a headset, Internet phone or an ATA. Internet phones resemble real phones. Some have number pads, ring like real phones and they are used in the same way. In order to use these ‘soft phones’ you also need VoIP software. The phones are to be plugged in the USB port or sound card.

The ATA gives you the opportunity to connect your traditional phone to your modem. Most VoIP providers will give you the ATA free of charge when you sign up. It connects to a broadband DSL or cable modem. When using an ATA you don’t need a computer to make phone calls. The ATA isn’t only handy because it’s easy to use – you simply pick up your phone and dial – but you can take it with you anywhere, connect it to a modem and make phone calls wherever you are. Calls will be redirected to your ATA with no extra charge.

Hardware-based IP phone
Image via Wikipedia

You may also choose an IP phone. IP phones are plugged into the modem (Internet phones are plugged into USB ports or sound cards). The IP phone has integrated hardware and software. All your numbers can be stored in the phone and it has features like caller ID.

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