
14-04-2006, 19:44
The purpose of the callback and VOIP services is to help you save money when mobile.
Right now I'm using VoiceStick.com as a VOIP service. I get a virtual local phone number in my home town here in the US. I can forward this number anywhere in the world from their webpage. That can be the international SIM when I'm trooping about Europe or the local SIM when I'm in the Czech Republic, or to a local landline if I have access to a landline. I can forward my US cellphone to my local VOIP number and when people call my US cell, the phone near me rings. If I'm not near a phone, the calls can go to voicemail and then be sent to me as sound file attached to an e-mail. They also sold me a USB "thumb drive" with their software preprogrammed and a headset. When you plug the stick into any Windows computer, it runs their program, without having to install it first. You can then call all over the world for pennies.
The callback service turns all calls into incoming calls. You trigger the callback and your phone rings presenting you with a US-based dial-tone. With a Japanese prepaid it's cheaper to do this to make local calls in Japan than to dial direct. Callback world also has a way for others to call you for free (they don't pay) in most European countries.
There are a lot of ways to use these things.
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