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GSM and Wi-Fi

Date Added: June 15, 2012 05:18:23 AM
Author: Gregory Cymbeline
Category: Computers & Internet: Telecommunications
GSM is the standard for cellular networks but you need to understand that it is not really the type of standard for VoIP. In fact, VoIP services tend to provide products that allow mobile communicators to rid themselves of the high GSM call costs. But at the same time you will see that there are a handful of VoIP services that work through a SIM card – the first and last parts of a call are channeled over GSM networks and the rest on IP networks and the Internet. What is the advantage of GSM is that it enjoys the advantage of nearly full coverage and that of network and hardware support. You can have GSM signals nearly anywhere under the sky with even the cheapest of mobile phones. But because of the reason that this network is not primarily IP-based, it is not for VoIP. At the same time, if you consider WI-Fi service, it would be nearly perfect had it not had the coverage limitation. It is loved by users because it offers tremendous speed and has reasonable hardware support on laptops, handhelds and mobile devices. But the main disadvantage of this service is that it just cannot reach far enough. In a Wi-Fi hotspot, you can’t get the signal beyond a dozen meters or two. So many people prefer Wi-Fi to international calling card because it is free. Wi-Fi is free, that is, once you invest on the Wi-Fi-enabled hardware and a router for the hostpot, you use the service with your ADSL line. For more details, visit :
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