This feature is great for globe-trotters. It takes full advantage of the portability of VoIP. It allows your friends and family to contact you over your VoIP phone number wherever you are in the world, without them having to pay high international rates. Their calls will be billed at the local rate. Some callers might not even know whether you are half the world away. You can make calls too and be charged at local rates.
The phone number given to you by your VoIP service provider is associated with the hardware device you use for this service, e.g. your ATA, IP phone or softphone. That hardware device may be your own or given by the provider. Once your VoIP hardware device is plugged to a broadband Internet connection, you can make and receive calls through your local VoIP phone number, wherever you are in the world.
For this, you need to bring along with you your hardware. It can be your IP phone, ATA, or simply your laptop computer for PC to Phone use.
For an Internet connection, you can make use of wall sockets for ADSL lines, which you can get in hotels and cybercafés; or you can connect to wireless networks, like Wi-Fi hotspots.
