Wifi Voip, Wimax Voip, Voip Over Wimax, Voip Over Wifi
Wifi Voip, Wimax Voip, Voip Over Wimax, Voip Over Wifi
The cities like San Francisco and are Philadelphia are investing in large-scale wireless networks to potentially blanket the cities and provide free wireless Internet access to all residents and visitors. The facilities will allow the visitors and the residents to surf the Internet from implausible locations such as parks, the bus, or even the beach.
The facility that makes it possible is technology of WiFi. WiFi is primarily used to create a Local Area Network or LAN that enables users within the network to connect wirelessly. The commonest use of Wi-Fi is primarily in Internet connectivity, but the technology is also used for closed-circuit business networking along with connecting consumer electronics, such as TVs and DVD players. The facility of WiFi allows Internet connectivity within a home or business at affordable rates and in an easy manner. Not only this, it also allows various commercial and service venues to provide wireless access to customers and the greater public. The access is however provided within a relatively small service area.
While the WiFi technology has proved to be largely successful in providing cheap wireless Internet service within close proximity to the WiFi access point, a new technology, WiMax, has also marked its presence in the market. The new technology could be used to expand the potential of wireless penetration and connection quality. Due to the similarity in the names of the two technologies, people often assume that WiMax is simply a more refined and more powerful form of WiFi. It is assumed to render WiFi irrelevant in the near future. This is partly true in the sense that WiMax provides wireless reception over significantly greater distances, and at higher broadband levels. On the other hand, the technology behind WiMax is significantly different from WiFi, as well as more costly. Most analysts agree to the fact that WiFi will continue to be the standard in the near future.
WiFi came to existence in Norway in 1991. It was originally designed for commercial cash register systems. It has grown so much that today it can provide wireless broadband access to any user who has wireless connectivity technology, or wireless adapter cards, within a small range. Typically, a WiFi signal can provide connectivity within a maximum range of 150 feet indoors and 300 feet outdoors.
In contrast to Wifi, WiMax serves several functions in wireless connectivity. It was largely created to provide the last-mile connectivity through broadband connection to homes as well as businesses. Instead of using fixed lines such as cable or telephone line to bring Internet access into a building, WiMax uses transmitters, such as cell-phone towers, to carry its signal. As againt the Wifi technology, WiMax technology does not require line-of-sight to the user. Therefore, it is possible for several subscribers to connect to a tower, even if it is blocked by trees or other buildings. This feature of WiMax makes it particularly useful and cost-effective for rural areas.
WiMax has a much greater range than WiFi. While engineers have stated that WiMax could have a range of up to 30 miles, field testsreports show a range radius of between four and eight miles.
WiMax also has some benefits over WiFi in terms of connection quality. When multiple users are connected to a WiFi access point, there are constant battles for connection and bandwidth. WiMax technology, however, secures each user with a constant allotment of broadband access.
WiMax is still in its infancy, and will need a significant boost in support and infrastructure before it gains any traction in the wireless market. WiFi, on the other hand, has already saturated a significant percentage of the wireless market, and it has proved both easy to use and cheap.
Lets see how this will effect on making free voip calls with Wifi or WiMax
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